Height adjustable furniture leg

Abstract

The present invention relates to a height-adjustable furniture leg configured to provide seamless and stable height adjustment while maintaining an aesthetically cohesive appearance. The furniture leg includes a base mountable to a furniture frame, a leg member extending downward, and an adjustment mechanism disposed at the upper portion of the leg member. The adjustment mechanism enables selective height variation through rotational or telescoping engagement while concealing parting seams from normal viewing angles. A locking mechanism prevents unintentional height changes, ensuring stability. The leg member may include grip-enhancing textures for ease of manual adjustment. A concealment structure, such as an overlapping flange, automatically repositions to obscure the adjustment interface during operation. The lower end of the leg member may incorporate a foot portion designed to distribute weight evenly across a surface. The invention enhances furniture stability, durability, and user convenience without requiring additional tools for height adjustment.

Description

CLAIM OF PRIORITY

[0001] The present application is based on, and a claim of priority is made under 35 U.S.C. Section 119(e) to a provisional patent application that is currently pending in the U.S. Patent and Trademark Office, namely, that having Ser. No. 63 / 634,128 and a filing date of Apr. 15, 2024, which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates generally to furniture support structures and, more particularly, to a height adjustable furniture leg that allows for selective adjustment of furniture height while minimizing the visibility of the adjustment mechanism.DESCRIPTION OF THE RELATED ART

[0003] Furniture with height-adjustable legs is widely used in residential, commercial, and industrial settings. Adjustable legs allow users to compensate for uneven flooring, modify furniture height for ergonomic reasons, and provide stability when standard fixed legs would result in wobbling or imbalance. Various mechanisms have been employed to facilitate height adjustment, including threaded connections, telescoping segments, locking pins, and ratcheting systems. While these designs provide functional benefits, they also introduce a number of drawbacks related to aesthetics, stability, durability, and ease of use.

[0004] One of the most common issues with conventional height-adjustable furniture legs is the visual disruption caused by the adjustment mechanism. Many existing designs incorporate a threaded shaft, telescoping sleeve, or other mechanical connection between two separate segments of the leg. When the height is adjusted, these components create a visible gap, seam, or exposed section that disrupts the otherwise uniform appearance of the leg. In some cases, the gap may be small, but even minimal exposure of the internal mechanism can be noticeable, particularly in modern furniture designs that emphasize clean lines and seamless aesthetics.

[0005] The visibility of the adjustment mechanism becomes even more pronounced when furniture is placed on uneven flooring, where different legs may need to be adjusted to varying heights. This results in inconsistent leg appearances, with some showing extended portions while others remain fully retracted. The effect is particularly undesirable in high-end furniture, where the goal is to maintain a refined and polished look. Even when efforts are made to conceal the adjustment area through the use of decorative covers or shrouds, these solutions often introduce additional bulk, complexity, or manufacturing costs.

[0006] Another significant drawback associated with conventional height-adjustable legs is mechanical instability over time. Many height adjustment mechanisms rely on friction, threading, or locking mechanisms to maintain the desired height. However, these mechanisms are often susceptible to loosening due to repeated use, vibrations, or shifting weight loads. For example, in threaded adjustment designs, the repeated application of force—whether from everyday use, furniture movement, or environmental factors such as floor expansion and contraction—can gradually cause the threads to slip or wear down. This can result in an uneven furniture stance, forcing users to frequently readjust the legs to restore stability.

[0007] The problem of instability is exacerbated when furniture is subject to frequent movement, such as chairs, desks, or shelving units that are repositioned regularly. Height-adjustable legs that lack robust locking mechanisms may shift unintentionally, leading to an inconsistent or unreliable adjustment. Some designs attempt to address this issue with locking rings, friction collars, or tightening screws, but these additions often require additional manual effort to engage and May still degrade over time.

[0008] Durability concerns are another major drawback in this field. Adjustable legs frequently incorporate moving parts that are exposed to dust, dirt, moisture, and physical impact. When adjustment mechanisms are located near the lower portion of the leg—closer to the ground—these components are more likely to accumulate debris, which can interfere with operation. Threaded shafts, in particular, can become clogged with dirt or corroded by moisture, leading to difficulty in making adjustments or complete failure of the mechanism. Additionally, plastic or lightweight materials used in some designs may not withstand repeated height changes or heavy furniture loads, resulting in cracking, deformation, or failure at the adjustment point.

[0009] Another issue is the ease of use. While many adjustable legs are designed for manual operation, some require tools, such as wrenches or screwdrivers, to modify the height. This added complexity can be inconvenient for users who need to make frequent adjustments. Additionally, height-adjustable legs that require significant force to turn or unlock may be difficult for individuals with limited strength or dexterity, such as elderly users or those with disabilities. Designs that rely on multiple components, such as locking rings or secondary adjustment mechanisms, add further steps to the process, reducing convenience and user-friendliness.

[0010] In many environments, especially in residential and office spaces, adjustable legs must provide not only functional benefits but also an unobtrusive and aesthetically pleasing design. Traditional solutions struggle to balance these requirements, often forcing users to choose between visual appeal and practical adjustability. This compromise limits the widespread adoption of adjustable legs in high-end furniture and creates demand for solutions that effectively combine seamless aesthetics with reliable adjustability.

[0011] Beyond aesthetic and functional concerns, manufacturing and cost considerations also play a role in determining the viability of height-adjustable leg designs. Many conventional designs involve multiple interconnected parts, each of which increases production complexity and cost. Threaded systems require precision machining, while telescoping designs often necessitate the use of additional materials for inner and outer casings. More complex mechanisms, such as ratcheting or hydraulic systems, add further expense and may be impractical for mass production.

[0012] Given the widespread need for height-adjustable furniture legs and the continued presence of these issues, there remains a strong demand for an improved solution. A design that allows for effective height adjustment while minimizing visibility, improving stability, enhancing durability, and simplifying use would provide a meaningful advancement in the field. Addressing these issues holistically, without introducing additional complexity or cost, would enable broader adoption and greater functionality across various furniture applications.SUMMARY OF THE INVENTION

[0013] The present invention is directed to a height-adjustable furniture leg that enables selective adjustment of the furniture height while maintaining a visually seamless appearance. The adjustment mechanism is strategically positioned at the upper portion of the leg, near the underside of the furniture, allowing for height modifications without exposing unsightly seams, gaps, or threaded components from a typical standing perspective. The leg is configured to rotate or otherwise engage an internal adjustment mechanism, permitting smooth height variation without the need for additional tools. This design integrates a multi-piece construction that ensures a secure and stable connection while remaining visually inconspicuous in normal use.

[0014] In contrast to conventional height-adjustable furniture legs, which often expose mechanical components, create noticeable parting seams, or suffer from instability over time, the present invention provides a refined solution that enhances both functionality and aesthetics. By positioning the adjustment mechanism at the upper portion of the leg, the invention conceals visual discontinuities that would otherwise detract from the furniture's design. Additionally, the construction of the leg reduces the risk of loosening or wear caused by repeated use, ensuring long-term stability. The concealed mechanism also protects against dirt, debris, and physical damage, improving durability and reducing maintenance. Furthermore, the user-friendly design allows for intuitive manual height adjustment without requiring excessive force or tools, making it more accessible for a wide range of users.

[0015] In a first implementation of the invention, a height-adjustable furniture leg is provided. The furniture leg includes a base configured to be mounted to an underside of a furniture frame, a leg member having an upper end and a lower end, with the upper end being rotatably coupled to the base, and an adjustment mechanism disposed at the upper end of the leg member. The adjustment mechanism is configured to selectively vary the height of the leg member relative to the base. A concealment structure is positioned at an interface between the base and the upper end of the leg member, the concealment structure being configured to obscure a parting seam created by the adjustment of the leg member from a normal viewing perspective when the furniture is in use.

[0016] In a second aspect, the adjustment mechanism may comprise a threaded connection between the base and the leg member, allowing for rotational height adjustment.

[0017] In another aspect, the threaded connection may include a locking mechanism configured to prevent unintentional height changes.

[0018] In another aspect, the concealment structure may comprise an overlapping flange extending from the base, the flange being configured to cover the parting seam during adjustment.

[0019] In another aspect, the leg member may comprise an outer sleeve and an inner telescoping section, the inner telescoping section being configured to move relative to the outer sleeve to vary the height.

[0020] In another aspect, the outer sleeve may include an internal guide structure configured to maintain axial alignment of the inner telescoping section.

[0021] In another aspect, the adjustment mechanism may be manually operable without requiring tools.

[0022] In another aspect, the adjustment mechanism may include a grip-enhancing surface on an exterior portion of the leg member to facilitate manual rotation.

[0023] In another aspect, the leg member may comprise a cylindrical shape.

[0024] In another aspect, the cylindrical shape may include a knurled or textured exterior surface to enhance grip for manual adjustment.

[0025] In another aspect, the base may be secured to the furniture frame using a plurality of fasteners arranged circumferentially around the base.

[0026] In another aspect, the base may include pre-formed mounting holes to receive the plurality of fasteners.

[0027] In another aspect, the concealment structure may be configured to automatically reposition as the leg member is adjusted, maintaining coverage of the parting seam.

[0028] In another aspect, the leg member may be composed of a metal material selected from the group consisting of aluminum, steel, and an alloy thereof.

[0029] In another aspect, the concealment structure may be composed of a flexible material to allow for seamless coverage of the parting seam.

[0030] In another aspect, the adjustment mechanism may include a detent system configured to provide discrete height settings.

[0031] In another aspect, the adjustment mechanism may be configured to provide a continuous range of height adjustment between a minimum and maximum position.

[0032] In another aspect, the leg member may further comprise a load-bearing foot at the lower end, the foot being configured to distribute weight evenly across a support surface.

[0033] In another implementation of the present invention, a method of adjusting the height of a furniture leg is provided. The method may comprise securing a base of the height-adjustable furniture leg to an underside of a furniture frame using a plurality of fasteners inserted through pre-formed mounting holes. A leg member having an upper end and a lower end may be rotatably coupled to the base, with the upper end engaging an adjustment mechanism disposed at the interface between the base and the leg member. The method may further comprise manually rotating the leg member to engage a threaded connection within the adjustment mechanism, thereby selectively varying the height of the leg relative to the base. A locking mechanism may be engaged to prevent unintentional movement of the leg after adjustment. During adjustment, a concealment structure positioned at the interface between the base and the leg member May automatically reposition to obscure a parting seam from a normal viewing perspective when the furniture is in use. The method may further include applying a grip-enhancing surface on the exterior of the leg member to facilitate manual rotation, and adjusting the leg to a discrete height setting using a detent system or to a continuously variable height between a minimum and maximum position. Once the desired height is set, the leg member may distribute weight evenly across a support surface, ensuring stability and maintaining an aesthetically seamless appearance.BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings provided to illustrate and not to limit the invention, where like designations denote like elements, and in which:

[0035] FIG. 1 presents a front perspective view of a furniture piece incorporating height-adjustable legs, in accordance with an illustrative embodiment of the invention;

[0036] FIG. 2 presents a front elevation view of the furniture piece illustrated in FIG. 1, showing the height-adjustable leg in an extended position, with a detailed callout of the adjustment mechanism at section A;

[0037] FIG. 2A presents an enlarged detail view of section A from FIG. 2, illustrating the adjustment mechanism of the height-adjustable leg in greater detail;

[0038] FIG. 3 presents a bottom view of the height-adjustable leg, illustrating the arrangement of fasteners and structural features used to secure the leg to the furniture frame;

[0039] FIG. 4 presents a top view of the height-adjustable leg, illustrating the internal adjustment mechanism and engagement features that facilitate controlled height modification;

[0040] FIG. 5 presents a side elevation view of the height-adjustable leg, illustrating the external profile and the relative positioning of the adjustment mechanism within the leg structure;

[0041] FIG. 6 presents a perspective view of the height-adjustable leg, illustrating the top mounting surface with fastener locations and the cylindrical body extending downward for engagement with the adjustment mechanism;

[0042] FIG. 7 presents an exploded perspective view of the height-adjustable leg, illustrating the individual components of the adjustment mechanism, including the mounting plate, threaded adjustment interface, and locking elements;

[0043] FIG. 8 presents a perspective view of a corner support structure incorporating a height-adjustable leg, illustrating the integration of the leg with a furniture frame for enhanced stability and load distribution;

[0044] FIG. 8A presents an inverted perspective view of the corner support structure illustrated in FIG. 8, showing the height-adjustable leg in an extended position and highlighting its integration with the furniture frame from a bottom-up perspective;

[0045] FIG. 9 presents a perspective view of a corner support structure incorporating a height-adjustable leg, shown in a fully extended position to illustrate the maximum adjustment range and structural integration with the furniture frame; and

[0046] FIG. 9A presents an exploded front elevation view of the corner support structure illustrated in FIG. 9, showing the height-adjustable leg separated from the frame to illustrate the threaded connection and attachment mechanism.

[0047] Like reference numerals refer to like parts throughout the several views of the drawings.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0048] The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIG. 1. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

[0049] Shown throughout the figures, the present invention provides a height-adjustable furniture leg 100, designed for diverse furniture applications. The furniture leg 100 includes various structural components carefully configured to facilitate precise, convenient, and visually unobtrusive height adjustments. FIG. 1 illustrates a front perspective view of the furniture leg 100 integrated into a furniture article, demonstrating its secure attachment to a furniture frame 104 positioned at a corner or edge of the furniture article. The furniture frame 104 itself may form part of tables, desks, chairs, cabinets, or similarly structured furnishings. The furniture leg 100 extends vertically downward from the furniture frame 104, culminating in a robust load-bearing foot portion 108. The foot portion 108 is strategically configured for optimal load distribution, providing stable support, preventing wobbling, and ensuring the furniture rests evenly and firmly on surfaces that may exhibit unevenness or irregularities.

[0050] FIG. 2 depicts the furniture leg 100 in a front elevation view, clearly showing the leg in an extended position, indicative of the furniture leg's adjustable height capabilities. The furniture leg includes a durable and rigid base 112 securely mounted beneath the furniture frame 104, providing an anchor point for the leg assembly. The base 112 features multiple pre-formed mounting holes 116, as best shown in FIG. 3, arranged circumferentially around its structure, specifically configured to accept fastening devices such as screws, bolts, or similar attachment hardware. These fasteners provide a secure and stable mechanical coupling between the furniture frame 104 and the furniture leg 100. To ensure durability and adequate load-bearing capacity, the base 112 may be composed of robust materials, including but not limited to aluminum, steel, or various metallic alloys. Furthermore, the base 112's configuration facilitates the uniform distribution of structural loads across its contact surface, reducing potential stress concentrations that could negatively affect structural integrity or long-term stability.

[0051] The upper portion of the furniture leg 100 is connected to the base 112 via an adjustment mechanism 120, facilitating selective height adjustments. In FIG. 2, a callout identified as section A emphasizes the precise location of the adjustment mechanism 120 at the juncture between the base 112 and the furniture leg's upper end. The adjustment mechanism 120 may encompass various mechanical configurations designed to enable height adjustments, such as threaded assemblies or telescoping arrangements. In a preferred embodiment, the adjustment mechanism 120 employs a threaded connection, allowing controlled rotational movement of the furniture leg 100 to vary its height incrementally. To enhance user convenience during adjustments, an exterior surface portion of the furniture leg 100 incorporates grip-enhancing textures or knurled patterns 144, promoting secure and ergonomic gripping during manual operation. This feature significantly improves user control and minimizes manual effort during rotational adjustment.

[0052] FIG. 2A provides an enlarged detailed illustration of the adjustment mechanism 120, clarifying its structural relationship with both the base 112 and the furniture leg 100. The adjustment mechanism 120 specifically utilizes threading 124, facilitating controlled rotational engagement between the furniture leg 100 and the base 112. The threading 124 may be precisely machined from materials exhibiting high durability and corrosion resistance, such as stainless steel or brass, thereby providing consistent and wear-resistant performance throughout numerous adjustment cycles. Additionally, the adjustment mechanism 120 integrates a locking mechanism 128, designed explicitly to prevent unintended height changes. The locking mechanism 128 May include detent systems, set screws, or friction-based arrangements, selectively engageable to secure the furniture leg 100 at specific, predetermined height positions. The locking mechanism 128 ensures that selected height settings remain stable under load conditions and throughout long-term furniture use.

[0053] FIG. 3 offers a detailed bottom view of the furniture leg 100, clearly depicting the underside of the base 112. The symmetrical and circumferential arrangement of mounting holes 116 around the base 112 is visible, providing evenly distributed attachment points. This arrangement optimizes structural stability by evenly distributing attachment forces across the furniture frame 104, thereby reducing localized stress concentrations. Additionally, the base 112's underside features a smooth, flat finish, ensuring flush contact against the underside of the furniture frame 104. To further facilitate proper installation, the base 112 includes integrated alignment features assisting users in consistently orienting multiple legs when installing them onto a furniture frame, improving uniformity across the furniture piece.

[0054] FIG. 4 presents a detailed top view of the furniture leg 100, revealing internal features within the adjustment mechanism 120. This top perspective clearly illustrates the receiving cavity 132 designed to engage with corresponding threaded portions located on the upper end of the furniture leg 100. The receiving cavity 132 is manufactured to precise dimensional tolerances, ensuring smooth, friction-minimized engagement and disengagement cycles during height adjustments. Furthermore, internal geometries within the cavity 132 support continuous and incremental height adjustments, facilitating precise leveling of the furniture frame 104. Internal axial guide structures within cavity 132 maintain proper alignment of threaded portions, preventing cross-threading and reducing component wear or frictional degradation during repeated adjustments.

[0055] FIG. 5 illustrates a side elevation view, clearly defining the cylindrical profile and dual-component structure of the furniture leg 100. The leg structure incorporates an outer sleeve 136 and an inner telescoping section 140. The outer sleeve 136 offers robust structural reinforcement and aesthetically pleasing concealment for internal mechanical components. The inner telescoping section 140 is dimensioned precisely to slide smoothly and axially within the outer sleeve 136, directly enabling variable height adjustments. To maintain smooth telescoping action, internal guide features within the outer sleeve 136 restrict lateral movement of the telescoping section 140. Both the outer sleeve 136 and telescoping section 140 are preferably fabricated from high-strength metal materials, such as aluminum or stainless steel, ensuring prolonged durability and reliable structural integrity even under repeated adjustment cycles.

[0056] FIG. 6 provides a detailed perspective view of the upper region of the furniture leg 100, explicitly showing the integration between base 112, mounting holes 116, and outer sleeve 136. The external surface of outer sleeve 136 is enhanced by grip-enhancing textures or knurled patterns 144, ergonomically designed to improve comfort, reduce slipping, and facilitate secure manual rotation. Additionally, the outer sleeve 136 exhibits a streamlined, aesthetically modern appearance, complementing contemporary furniture designs. Meticulous integration between the base 112 and the outer sleeve 136 minimizes visible seams or structural discontinuities, thereby promoting visual harmony and aesthetic coherence from typical viewing angles.

[0057] FIG. 7 illustrates an exploded perspective view, clearly depicting the detailed assembly order of key components, including the base 112, threaded connection 124, locking mechanism 128, outer sleeve 136, telescoping section 140, and foot portion 108. The foot portion 108, fabricated from resilient materials such as rubber, silicone, or durable plastics, uniformly distributes the furniture's weight, minimizing risks of surface indentation or damage. Moreover, the foot portion 108 is designed for interchangeability, allowing users to select specific foot types compatible with different floor surfaces, thereby increasing adaptability and versatility of the furniture leg 100 in diverse usage environments.

[0058] FIG. 8 illustrates the furniture leg 100 fully integrated into a corner support structure 148, demonstrating structural compatibility with standard furniture frames. The corner structure 148 includes reinforcing brackets or support plates enhancing mechanical strength and load-bearing capacity, beneficial in dynamic or high-load scenarios. This integration clearly demonstrates adaptability and versatility, providing straightforward installation and maintenance possibilities across varied furniture configurations and structural contexts.

[0059] FIG. 8A presents an inverted perspective view, highlighting seamless integration of furniture leg 100 within the corner structure 148. An overlapping flange 152 extends from the base 112, concealing the adjustment-related seams. Flange 152 automatically repositions relative to sleeve 136 during height adjustments, consistently covering visual discontinuities. Manufactured from flexible elastomers or resilient plastics, flange 152 reliably functions throughout repeated height adjustment cycles without deformation or compromise in performance.

[0060] In another implementation of the present invention, a method for adjusting the height of the furniture leg 100 is provided. The method initially involves preparing the furniture leg 100 for attachment to the furniture frame 104 by aligning the pre-formed mounting holes 116 of the base 112 with corresponding attachment points beneath the furniture frame 104. Proper alignment ensures consistent orientation and optimal load distribution across the base 112. After alignment, fasteners, such as screws, bolts, or similar attachment hardware, are inserted through the mounting holes 116 and tightened securely into the furniture frame 104. Ensuring the fasteners are properly tightened provides a rigid, stable coupling between the furniture leg 100 and furniture frame 104, creating a secure platform for subsequent height adjustments. During this attachment process, the smooth underside of the base 112 achieves flush contact with the furniture frame 104, further enhancing stability.

[0061] Once the base 112 is securely affixed, height adjustment of the furniture leg 100 may commence. A user initiates this adjustment by manually gripping the outer sleeve 136, which includes grip-enhancing surface textures or knurled patterns 144 to facilitate secure manual operation. Upon gripping, the user rotates the outer sleeve 136 either clockwise or counterclockwise, depending on whether an increase or decrease in leg height is desired. This rotation directly engages the threading 124 of the adjustment mechanism 120 positioned at the interface between the base 112 and the upper portion of the furniture leg 100. Rotation in one direction causes threading 124 engagement, extending the telescoping section 140 outward from the outer sleeve 136, thereby increasing leg height. Conversely, rotation in the opposite direction retracts the telescoping section 140, reducing the overall height. The precise control provided by threading 124 allows for continuous, incremental height adjustments tailored to the exact leveling requirements of the furniture frame 104.

[0062] Following height selection, the user engages the locking mechanism 128, configured to stabilize the furniture leg 100 at the chosen height position. Locking mechanism 128 may comprise a detent system with defined positional intervals, a frictional locking device, or a set screw arrangement. If a detent system is utilized, users experience tactile feedback indicating that the leg has reached a predetermined height increment, ensuring consistent adjustment across multiple legs. Upon engagement, the locking mechanism 128 prevents unintended height changes due to vibrations, incidental contact, or normal use. Additionally, the user retains the ability to disengage and subsequently re-engage locking mechanism 128 at any time, allowing further adjustments as required by changes in furniture placement or floor conditions. The reliability and convenience afforded by the locking mechanism 128 provide stability over extended periods without frequent maintenance.

[0063] During rotational height adjustments, the overlapping flange 152, positioned at the interface of the base 112 and the outer sleeve 136, automatically repositions to conceal the resulting parting seam. Composed of flexible elastomers or resilient plastics, the flange 152 moves smoothly and automatically, maintaining continuous concealment of any seam created by leg extension or retraction. The flexible composition of the flange 152 ensures consistent performance without interfering with smooth height adjustment operations, even after repeated cycles of extension and retraction. This automatic repositioning capability maintains a seamless and aesthetically pleasing appearance of the furniture leg 100 from normal viewing perspectives. Consequently, users are not required to perform additional steps to conceal or blend adjustable components following height adjustments, further enhancing the convenience and aesthetic appeal of the furniture leg 100.

[0064] The method additionally comprises utilizing the foot portion 108 at the lower end of furniture leg 100. Specifically, the foot portion 108 evenly distributes furniture weight across the supporting floor surface, effectively preventing indentations, scratches, or other potential surface damage. Selection of materials for foot portion 108, such as durable rubber or rigid plastic compositions, ensures effective, reliable, and non-damaging contact with various floor types. The foot portion 108 may be designed to be easily interchangeable, allowing users to replace or upgrade this component depending on specific use-case scenarios, aesthetic preferences, or environmental conditions. For instance, users may select softer materials for hardwood floors to prevent scratching or more rigid, durable options for carpeted surfaces. Such interchangeability greatly enhances the adaptability and versatility of the furniture leg 100, enabling customized application across a wide range of flooring conditions and furniture placements.

[0065] In practical use, the described method provides straightforward installation, intuitive adjustment operation, reliable locking capabilities, and seamless aesthetic concealment, collectively improving both functionality and user experience. The user-friendly approach minimizes effort, enabling precise adjustments even by users with limited mechanical experience or reduced physical strength. Furthermore, repeated adjustments can be performed quickly and efficiently without requiring specialized tools or professional assistance, thus reducing overall maintenance time and cost. The robust design and high-quality materials used for components like threading 124, locking mechanism 128, and flange 152 ensure long-term reliability and durability. This comprehensive operational approach ensures that furniture utilizing the height-adjustable furniture leg 100 consistently maintains stability, precise leveling, and visual appeal throughout its lifespan.

[0066] Alternate embodiments of the furniture leg 100 may include various configurations and modifications without departing from the overall inventive concept described herein. In some implementations, the adjustment mechanism 120 may utilize alternative mechanical arrangements such as hydraulic or pneumatic systems, facilitating height adjustment through fluid-based displacement rather than manual threading. Further embodiments may integrate electrically-driven motors or actuator assemblies enabling users to remotely adjust furniture height via wireless control or smartphone applications. Sensors may be included to automatically detect and adapt to uneven surfaces or load changes, dynamically adjusting the leg height without manual intervention.

[0067] Additionally, alternate versions of locking mechanism 128 may employ quick-release devices, lever-operated cam locks, or magnetic locking arrangements, each providing distinct operational advantages based on user preferences or specific furniture applications. Some embodiments may integrate visual or auditory height-setting indicators, such as digital displays, audible clicks, or illuminated markers, assisting users in achieving consistent and precise leveling across multiple legs or furniture pieces. Variations may also incorporate supplemental stability enhancements, such as adjustable stabilizing feet or additional internal reinforcement structures, particularly beneficial in high-load or dynamic furniture applications.

[0068] The furniture leg 100 may be fabricated using alternative materials, including advanced composites, carbon fiber, reinforced thermoplastics, or sustainable materials like recycled plastics or engineered wood composites, each selected to provide specific structural, aesthetic, or environmental advantages. Furthermore, interchangeable or modular components may allow users to selectively customize the furniture leg's appearance or functionality. For example, interchangeable decorative sleeves or coverings may be applied to match diverse interior design themes or user aesthetic preferences without altering the core structural components. These alternate embodiments clearly illustrate the broad adaptability and versatility of the present invention, highlighting potential modifications and enhancements that cater specifically to specialized furniture applications, evolving user needs, or distinct market segments.

[0069] Since many modifications, variations, and changes in detail can be made to the described preferred embodiments of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Furthermore, it is understood that any of the features presented in the embodiments may be integrated into any of the other embodiments unless explicitly stated otherwise. The scope of the invention should be determined by the appended claims and their legal equivalents.

Examples

Embodiment Construction

[0048]The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIG. 1. Furthermore, there is no intention to be bound by any expressed or implied theo...

CLAIM OF PRIORITY

[0001] The present application is based on, and a claim of priority is made under 35 U.S.C. Section 119(e) to a provisional patent application that is currently pending in the U.S. Patent and Trademark Office, namely, that having Ser. No. 63 / 634,128 and a filing date of Apr. 15, 2024, which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION

[0002] The present invention relates generally to furniture support structures and, more particularly, to a height adjustable furniture leg that allows for selective adjustment of furniture height while minimizing the visibility of the adjustment mechanism.DESCRIPTION OF THE RELATED ART

[0003] Furniture with height-adjustable legs is widely used in residential, commercial, and industrial settings. Adjustable legs allow users to compensate for uneven flooring, modify furniture height for ergonomic reasons, and provide stability when standard fixed legs would result in wobbling or imbalance. Various mechanisms have been employed to facilitate height adjustment, including threaded connections, telescoping segments, locking pins, and ratcheting systems. While these designs provide functional benefits, they also introduce a number of drawbacks related to aesthetics, stability, durability, and ease of use.

[0004] One of the most common issues with conventional height-adjustable furniture legs is the visual disruption caused by the adjustment mechanism. Many existing designs incorporate a threaded shaft, telescoping sleeve, or other mechanical connection between two separate segments of the leg. When the height is adjusted, these components create a visible gap, seam, or exposed section that disrupts the otherwise uniform appearance of the leg. In some cases, the gap may be small, but even minimal exposure of the internal mechanism can be noticeable, particularly in modern furniture designs that emphasize clean lines and seamless aesthetics.

[0005] The visibility of the adjustment mechanism becomes even more pronounced when furniture is placed on uneven flooring, where different legs may need to be adjusted to varying heights. This results in inconsistent leg appearances, with some showing extended portions while others remain fully retracted. The effect is particularly undesirable in high-end furniture, where the goal is to maintain a refined and polished look. Even when efforts are made to conceal the adjustment area through the use of decorative covers or shrouds, these solutions often introduce additional bulk, complexity, or manufacturing costs.

[0006] Another significant drawback associated with conventional height-adjustable legs is mechanical instability over time. Many height adjustment mechanisms rely on friction, threading, or locking mechanisms to maintain the desired height. However, these mechanisms are often susceptible to loosening due to repeated use, vibrations, or shifting weight loads. For example, in threaded adjustment designs, the repeated application of force—whether from everyday use, furniture movement, or environmental factors such as floor expansion and contraction—can gradually cause the threads to slip or wear down. This can result in an uneven furniture stance, forcing users to frequently readjust the legs to restore stability.

[0007] The problem of instability is exacerbated when furniture is subject to frequent movement, such as chairs, desks, or shelving units that are repositioned regularly. Height-adjustable legs that lack robust locking mechanisms may shift unintentionally, leading to an inconsistent or unreliable adjustment. Some designs attempt to address this issue with locking rings, friction collars, or tightening screws, but these additions often require additional manual effort to engage and May still degrade over time.

[0008] Durability concerns are another major drawback in this field. Adjustable legs frequently incorporate moving parts that are exposed to dust, dirt, moisture, and physical impact. When adjustment mechanisms are located near the lower portion of the leg—closer to the ground—these components are more likely to accumulate debris, which can interfere with operation. Threaded shafts, in particular, can become clogged with dirt or corroded by moisture, leading to difficulty in making adjustments or complete failure of the mechanism. Additionally, plastic or lightweight materials used in some designs may not withstand repeated height changes or heavy furniture loads, resulting in cracking, deformation, or failure at the adjustment point.

[0009] Another issue is the ease of use. While many adjustable legs are designed for manual operation, some require tools, such as wrenches or screwdrivers, to modify the height. This added complexity can be inconvenient for users who need to make frequent adjustments. Additionally, height-adjustable legs that require significant force to turn or unlock may be difficult for individuals with limited strength or dexterity, such as elderly users or those with disabilities. Designs that rely on multiple components, such as locking rings or secondary adjustment mechanisms, add further steps to the process, reducing convenience and user-friendliness.

[0010] In many environments, especially in residential and office spaces, adjustable legs must provide not only functional benefits but also an unobtrusive and aesthetically pleasing design. Traditional solutions struggle to balance these requirements, often forcing users to choose between visual appeal and practical adjustability. This compromise limits the widespread adoption of adjustable legs in high-end furniture and creates demand for solutions that effectively combine seamless aesthetics with reliable adjustability.

[0011] Beyond aesthetic and functional concerns, manufacturing and cost considerations also play a role in determining the viability of height-adjustable leg designs. Many conventional designs involve multiple interconnected parts, each of which increases production complexity and cost. Threaded systems require precision machining, while telescoping designs often necessitate the use of additional materials for inner and outer casings. More complex mechanisms, such as ratcheting or hydraulic systems, add further expense and may be impractical for mass production.

[0012] Given the widespread need for height-adjustable furniture legs and the continued presence of these issues, there remains a strong demand for an improved solution. A design that allows for effective height adjustment while minimizing visibility, improving stability, enhancing durability, and simplifying use would provide a meaningful advancement in the field. Addressing these issues holistically, without introducing additional complexity or cost, would enable broader adoption and greater functionality across various furniture applications.SUMMARY OF THE INVENTION

[0013] The present invention is directed to a height-adjustable furniture leg that enables selective adjustment of the furniture height while maintaining a visually seamless appearance. The adjustment mechanism is strategically positioned at the upper portion of the leg, near the underside of the furniture, allowing for height modifications without exposing unsightly seams, gaps, or threaded components from a typical standing perspective. The leg is configured to rotate or otherwise engage an internal adjustment mechanism, permitting smooth height variation without the need for additional tools. This design integrates a multi-piece construction that ensures a secure and stable connection while remaining visually inconspicuous in normal use.

[0014] In contrast to conventional height-adjustable furniture legs, which often expose mechanical components, create noticeable parting seams, or suffer from instability over time, the present invention provides a refined solution that enhances both functionality and aesthetics. By positioning the adjustment mechanism at the upper portion of the leg, the invention conceals visual discontinuities that would otherwise detract from the furniture's design. Additionally, the construction of the leg reduces the risk of loosening or wear caused by repeated use, ensuring long-term stability. The concealed mechanism also protects against dirt, debris, and physical damage, improving durability and reducing maintenance. Furthermore, the user-friendly design allows for intuitive manual height adjustment without requiring excessive force or tools, making it more accessible for a wide range of users.

[0015] In a first implementation of the invention, a height-adjustable furniture leg is provided. The furniture leg includes a base configured to be mounted to an underside of a furniture frame, a leg member having an upper end and a lower end, with the upper end being rotatably coupled to the base, and an adjustment mechanism disposed at the upper end of the leg member. The adjustment mechanism is configured to selectively vary the height of the leg member relative to the base. A concealment structure is positioned at an interface between the base and the upper end of the leg member, the concealment structure being configured to obscure a parting seam created by the adjustment of the leg member from a normal viewing perspective when the furniture is in use.

[0016] In a second aspect, the adjustment mechanism may comprise a threaded connection between the base and the leg member, allowing for rotational height adjustment.

[0017] In another aspect, the threaded connection may include a locking mechanism configured to prevent unintentional height changes.

[0018] In another aspect, the concealment structure may comprise an overlapping flange extending from the base, the flange being configured to cover the parting seam during adjustment.

[0019] In another aspect, the leg member may comprise an outer sleeve and an inner telescoping section, the inner telescoping section being configured to move relative to the outer sleeve to vary the height.

[0020] In another aspect, the outer sleeve may include an internal guide structure configured to maintain axial alignment of the inner telescoping section.

[0021] In another aspect, the adjustment mechanism may be manually operable without requiring tools.

[0022] In another aspect, the adjustment mechanism may include a grip-enhancing surface on an exterior portion of the leg member to facilitate manual rotation.

[0023] In another aspect, the leg member may comprise a cylindrical shape.

[0024] In another aspect, the cylindrical shape may include a knurled or textured exterior surface to enhance grip for manual adjustment.

[0025] In another aspect, the base may be secured to the furniture frame using a plurality of fasteners arranged circumferentially around the base.

[0026] In another aspect, the base may include pre-formed mounting holes to receive the plurality of fasteners.

[0027] In another aspect, the concealment structure may be configured to automatically reposition as the leg member is adjusted, maintaining coverage of the parting seam.

[0028] In another aspect, the leg member may be composed of a metal material selected from the group consisting of aluminum, steel, and an alloy thereof.

[0029] In another aspect, the concealment structure may be composed of a flexible material to allow for seamless coverage of the parting seam.

[0030] In another aspect, the adjustment mechanism may include a detent system configured to provide discrete height settings.

[0031] In another aspect, the adjustment mechanism may be configured to provide a continuous range of height adjustment between a minimum and maximum position.

[0032] In another aspect, the leg member may further comprise a load-bearing foot at the lower end, the foot being configured to distribute weight evenly across a support surface.

[0033] In another implementation of the present invention, a method of adjusting the height of a furniture leg is provided. The method may comprise securing a base of the height-adjustable furniture leg to an underside of a furniture frame using a plurality of fasteners inserted through pre-formed mounting holes. A leg member having an upper end and a lower end may be rotatably coupled to the base, with the upper end engaging an adjustment mechanism disposed at the interface between the base and the leg member. The method may further comprise manually rotating the leg member to engage a threaded connection within the adjustment mechanism, thereby selectively varying the height of the leg relative to the base. A locking mechanism may be engaged to prevent unintentional movement of the leg after adjustment. During adjustment, a concealment structure positioned at the interface between the base and the leg member May automatically reposition to obscure a parting seam from a normal viewing perspective when the furniture is in use. The method may further include applying a grip-enhancing surface on the exterior of the leg member to facilitate manual rotation, and adjusting the leg to a discrete height setting using a detent system or to a continuously variable height between a minimum and maximum position. Once the desired height is set, the leg member may distribute weight evenly across a support surface, ensuring stability and maintaining an aesthetically seamless appearance.BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings provided to illustrate and not to limit the invention, where like designations denote like elements, and in which:

[0035] FIG. 1 presents a front perspective view of a furniture piece incorporating height-adjustable legs, in accordance with an illustrative embodiment of the invention;

[0036] FIG. 2 presents a front elevation view of the furniture piece illustrated in FIG. 1, showing the height-adjustable leg in an extended position, with a detailed callout of the adjustment mechanism at section A;

[0037] FIG. 2A presents an enlarged detail view of section A from FIG. 2, illustrating the adjustment mechanism of the height-adjustable leg in greater detail;

[0038] FIG. 3 presents a bottom view of the height-adjustable leg, illustrating the arrangement of fasteners and structural features used to secure the leg to the furniture frame;

[0039] FIG. 4 presents a top view of the height-adjustable leg, illustrating the internal adjustment mechanism and engagement features that facilitate controlled height modification;

[0040] FIG. 5 presents a side elevation view of the height-adjustable leg, illustrating the external profile and the relative positioning of the adjustment mechanism within the leg structure;

[0041] FIG. 6 presents a perspective view of the height-adjustable leg, illustrating the top mounting surface with fastener locations and the cylindrical body extending downward for engagement with the adjustment mechanism;

[0042] FIG. 7 presents an exploded perspective view of the height-adjustable leg, illustrating the individual components of the adjustment mechanism, including the mounting plate, threaded adjustment interface, and locking elements;

[0043] FIG. 8 presents a perspective view of a corner support structure incorporating a height-adjustable leg, illustrating the integration of the leg with a furniture frame for enhanced stability and load distribution;

[0044] FIG. 8A presents an inverted perspective view of the corner support structure illustrated in FIG. 8, showing the height-adjustable leg in an extended position and highlighting its integration with the furniture frame from a bottom-up perspective;

[0045] FIG. 9 presents a perspective view of a corner support structure incorporating a height-adjustable leg, shown in a fully extended position to illustrate the maximum adjustment range and structural integration with the furniture frame; and

[0046] FIG. 9A presents an exploded front elevation view of the corner support structure illustrated in FIG. 9, showing the height-adjustable leg separated from the frame to illustrate the threaded connection and attachment mechanism.

[0047] Like reference numerals refer to like parts throughout the several views of the drawings.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0048] The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIG. 1. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification, are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.

[0049] Shown throughout the figures, the present invention provides a height-adjustable furniture leg 100, designed for diverse furniture applications. The furniture leg 100 includes various structural components carefully configured to facilitate precise, convenient, and visually unobtrusive height adjustments. FIG. 1 illustrates a front perspective view of the furniture leg 100 integrated into a furniture article, demonstrating its secure attachment to a furniture frame 104 positioned at a corner or edge of the furniture article. The furniture frame 104 itself may form part of tables, desks, chairs, cabinets, or similarly structured furnishings. The furniture leg 100 extends vertically downward from the furniture frame 104, culminating in a robust load-bearing foot portion 108. The foot portion 108 is strategically configured for optimal load distribution, providing stable support, preventing wobbling, and ensuring the furniture rests evenly and firmly on surfaces that may exhibit unevenness or irregularities.

[0050] FIG. 2 depicts the furniture leg 100 in a front elevation view, clearly showing the leg in an extended position, indicative of the furniture leg's adjustable height capabilities. The furniture leg includes a durable and rigid base 112 securely mounted beneath the furniture frame 104, providing an anchor point for the leg assembly. The base 112 features multiple pre-formed mounting holes 116, as best shown in FIG. 3, arranged circumferentially around its structure, specifically configured to accept fastening devices such as screws, bolts, or similar attachment hardware. These fasteners provide a secure and stable mechanical coupling between the furniture frame 104 and the furniture leg 100. To ensure durability and adequate load-bearing capacity, the base 112 may be composed of robust materials, including but not limited to aluminum, steel, or various metallic alloys. Furthermore, the base 112's configuration facilitates the uniform distribution of structural loads across its contact surface, reducing potential stress concentrations that could negatively affect structural integrity or long-term stability.

[0051] The upper portion of the furniture leg 100 is connected to the base 112 via an adjustment mechanism 120, facilitating selective height adjustments. In FIG. 2, a callout identified as section A emphasizes the precise location of the adjustment mechanism 120 at the juncture between the base 112 and the furniture leg's upper end. The adjustment mechanism 120 may encompass various mechanical configurations designed to enable height adjustments, such as threaded assemblies or telescoping arrangements. In a preferred embodiment, the adjustment mechanism 120 employs a threaded connection, allowing controlled rotational movement of the furniture leg 100 to vary its height incrementally. To enhance user convenience during adjustments, an exterior surface portion of the furniture leg 100 incorporates grip-enhancing textures or knurled patterns 144, promoting secure and ergonomic gripping during manual operation. This feature significantly improves user control and minimizes manual effort during rotational adjustment.

[0052] FIG. 2A provides an enlarged detailed illustration of the adjustment mechanism 120, clarifying its structural relationship with both the base 112 and the furniture leg 100. The adjustment mechanism 120 specifically utilizes threading 124, facilitating controlled rotational engagement between the furniture leg 100 and the base 112. The threading 124 may be precisely machined from materials exhibiting high durability and corrosion resistance, such as stainless steel or brass, thereby providing consistent and wear-resistant performance throughout numerous adjustment cycles. Additionally, the adjustment mechanism 120 integrates a locking mechanism 128, designed explicitly to prevent unintended height changes. The locking mechanism 128 May include detent systems, set screws, or friction-based arrangements, selectively engageable to secure the furniture leg 100 at specific, predetermined height positions. The locking mechanism 128 ensures that selected height settings remain stable under load conditions and throughout long-term furniture use.

[0053] FIG. 3 offers a detailed bottom view of the furniture leg 100, clearly depicting the underside of the base 112. The symmetrical and circumferential arrangement of mounting holes 116 around the base 112 is visible, providing evenly distributed attachment points. This arrangement optimizes structural stability by evenly distributing attachment forces across the furniture frame 104, thereby reducing localized stress concentrations. Additionally, the base 112's underside features a smooth, flat finish, ensuring flush contact against the underside of the furniture frame 104. To further facilitate proper installation, the base 112 includes integrated alignment features assisting users in consistently orienting multiple legs when installing them onto a furniture frame, improving uniformity across the furniture piece.

[0054] FIG. 4 presents a detailed top view of the furniture leg 100, revealing internal features within the adjustment mechanism 120. This top perspective clearly illustrates the receiving cavity 132 designed to engage with corresponding threaded portions located on the upper end of the furniture leg 100. The receiving cavity 132 is manufactured to precise dimensional tolerances, ensuring smooth, friction-minimized engagement and disengagement cycles during height adjustments. Furthermore, internal geometries within the cavity 132 support continuous and incremental height adjustments, facilitating precise leveling of the furniture frame 104. Internal axial guide structures within cavity 132 maintain proper alignment of threaded portions, preventing cross-threading and reducing component wear or frictional degradation during repeated adjustments.

[0055] FIG. 5 illustrates a side elevation view, clearly defining the cylindrical profile and dual-component structure of the furniture leg 100. The leg structure incorporates an outer sleeve 136 and an inner telescoping section 140. The outer sleeve 136 offers robust structural reinforcement and aesthetically pleasing concealment for internal mechanical components. The inner telescoping section 140 is dimensioned precisely to slide smoothly and axially within the outer sleeve 136, directly enabling variable height adjustments. To maintain smooth telescoping action, internal guide features within the outer sleeve 136 restrict lateral movement of the telescoping section 140. Both the outer sleeve 136 and telescoping section 140 are preferably fabricated from high-strength metal materials, such as aluminum or stainless steel, ensuring prolonged durability and reliable structural integrity even under repeated adjustment cycles.

[0056] FIG. 6 provides a detailed perspective view of the upper region of the furniture leg 100, explicitly showing the integration between base 112, mounting holes 116, and outer sleeve 136. The external surface of outer sleeve 136 is enhanced by grip-enhancing textures or knurled patterns 144, ergonomically designed to improve comfort, reduce slipping, and facilitate secure manual rotation. Additionally, the outer sleeve 136 exhibits a streamlined, aesthetically modern appearance, complementing contemporary furniture designs. Meticulous integration between the base 112 and the outer sleeve 136 minimizes visible seams or structural discontinuities, thereby promoting visual harmony and aesthetic coherence from typical viewing angles.

[0057] FIG. 7 illustrates an exploded perspective view, clearly depicting the detailed assembly order of key components, including the base 112, threaded connection 124, locking mechanism 128, outer sleeve 136, telescoping section 140, and foot portion 108. The foot portion 108, fabricated from resilient materials such as rubber, silicone, or durable plastics, uniformly distributes the furniture's weight, minimizing risks of surface indentation or damage. Moreover, the foot portion 108 is designed for interchangeability, allowing users to select specific foot types compatible with different floor surfaces, thereby increasing adaptability and versatility of the furniture leg 100 in diverse usage environments.

[0058] FIG. 8 illustrates the furniture leg 100 fully integrated into a corner support structure 148, demonstrating structural compatibility with standard furniture frames. The corner structure 148 includes reinforcing brackets or support plates enhancing mechanical strength and load-bearing capacity, beneficial in dynamic or high-load scenarios. This integration clearly demonstrates adaptability and versatility, providing straightforward installation and maintenance possibilities across varied furniture configurations and structural contexts.

[0059] FIG. 8A presents an inverted perspective view, highlighting seamless integration of furniture leg 100 within the corner structure 148. An overlapping flange 152 extends from the base 112, concealing the adjustment-related seams. Flange 152 automatically repositions relative to sleeve 136 during height adjustments, consistently covering visual discontinuities. Manufactured from flexible elastomers or resilient plastics, flange 152 reliably functions throughout repeated height adjustment cycles without deformation or compromise in performance.

[0060] In another implementation of the present invention, a method for adjusting the height of the furniture leg 100 is provided. The method initially involves preparing the furniture leg 100 for attachment to the furniture frame 104 by aligning the pre-formed mounting holes 116 of the base 112 with corresponding attachment points beneath the furniture frame 104. Proper alignment ensures consistent orientation and optimal load distribution across the base 112. After alignment, fasteners, such as screws, bolts, or similar attachment hardware, are inserted through the mounting holes 116 and tightened securely into the furniture frame 104. Ensuring the fasteners are properly tightened provides a rigid, stable coupling between the furniture leg 100 and furniture frame 104, creating a secure platform for subsequent height adjustments. During this attachment process, the smooth underside of the base 112 achieves flush contact with the furniture frame 104, further enhancing stability.

[0061] Once the base 112 is securely affixed, height adjustment of the furniture leg 100 may commence. A user initiates this adjustment by manually gripping the outer sleeve 136, which includes grip-enhancing surface textures or knurled patterns 144 to facilitate secure manual operation. Upon gripping, the user rotates the outer sleeve 136 either clockwise or counterclockwise, depending on whether an increase or decrease in leg height is desired. This rotation directly engages the threading 124 of the adjustment mechanism 120 positioned at the interface between the base 112 and the upper portion of the furniture leg 100. Rotation in one direction causes threading 124 engagement, extending the telescoping section 140 outward from the outer sleeve 136, thereby increasing leg height. Conversely, rotation in the opposite direction retracts the telescoping section 140, reducing the overall height. The precise control provided by threading 124 allows for continuous, incremental height adjustments tailored to the exact leveling requirements of the furniture frame 104.

[0062] Following height selection, the user engages the locking mechanism 128, configured to stabilize the furniture leg 100 at the chosen height position. Locking mechanism 128 may comprise a detent system with defined positional intervals, a frictional locking device, or a set screw arrangement. If a detent system is utilized, users experience tactile feedback indicating that the leg has reached a predetermined height increment, ensuring consistent adjustment across multiple legs. Upon engagement, the locking mechanism 128 prevents unintended height changes due to vibrations, incidental contact, or normal use. Additionally, the user retains the ability to disengage and subsequently re-engage locking mechanism 128 at any time, allowing further adjustments as required by changes in furniture placement or floor conditions. The reliability and convenience afforded by the locking mechanism 128 provide stability over extended periods without frequent maintenance.

[0063] During rotational height adjustments, the overlapping flange 152, positioned at the interface of the base 112 and the outer sleeve 136, automatically repositions to conceal the resulting parting seam. Composed of flexible elastomers or resilient plastics, the flange 152 moves smoothly and automatically, maintaining continuous concealment of any seam created by leg extension or retraction. The flexible composition of the flange 152 ensures consistent performance without interfering with smooth height adjustment operations, even after repeated cycles of extension and retraction. This automatic repositioning capability maintains a seamless and aesthetically pleasing appearance of the furniture leg 100 from normal viewing perspectives. Consequently, users are not required to perform additional steps to conceal or blend adjustable components following height adjustments, further enhancing the convenience and aesthetic appeal of the furniture leg 100.

[0064] The method additionally comprises utilizing the foot portion 108 at the lower end of furniture leg 100. Specifically, the foot portion 108 evenly distributes furniture weight across the supporting floor surface, effectively preventing indentations, scratches, or other potential surface damage. Selection of materials for foot portion 108, such as durable rubber or rigid plastic compositions, ensures effective, reliable, and non-damaging contact with various floor types. The foot portion 108 may be designed to be easily interchangeable, allowing users to replace or upgrade this component depending on specific use-case scenarios, aesthetic preferences, or environmental conditions. For instance, users may select softer materials for hardwood floors to prevent scratching or more rigid, durable options for carpeted surfaces. Such interchangeability greatly enhances the adaptability and versatility of the furniture leg 100, enabling customized application across a wide range of flooring conditions and furniture placements.

[0065] In practical use, the described method provides straightforward installation, intuitive adjustment operation, reliable locking capabilities, and seamless aesthetic concealment, collectively improving both functionality and user experience. The user-friendly approach minimizes effort, enabling precise adjustments even by users with limited mechanical experience or reduced physical strength. Furthermore, repeated adjustments can be performed quickly and efficiently without requiring specialized tools or professional assistance, thus reducing overall maintenance time and cost. The robust design and high-quality materials used for components like threading 124, locking mechanism 128, and flange 152 ensure long-term reliability and durability. This comprehensive operational approach ensures that furniture utilizing the height-adjustable furniture leg 100 consistently maintains stability, precise leveling, and visual appeal throughout its lifespan.

[0066] Alternate embodiments of the furniture leg 100 may include various configurations and modifications without departing from the overall inventive concept described herein. In some implementations, the adjustment mechanism 120 may utilize alternative mechanical arrangements such as hydraulic or pneumatic systems, facilitating height adjustment through fluid-based displacement rather than manual threading. Further embodiments may integrate electrically-driven motors or actuator assemblies enabling users to remotely adjust furniture height via wireless control or smartphone applications. Sensors may be included to automatically detect and adapt to uneven surfaces or load changes, dynamically adjusting the leg height without manual intervention.

[0067] Additionally, alternate versions of locking mechanism 128 may employ quick-release devices, lever-operated cam locks, or magnetic locking arrangements, each providing distinct operational advantages based on user preferences or specific furniture applications. Some embodiments may integrate visual or auditory height-setting indicators, such as digital displays, audible clicks, or illuminated markers, assisting users in achieving consistent and precise leveling across multiple legs or furniture pieces. Variations may also incorporate supplemental stability enhancements, such as adjustable stabilizing feet or additional internal reinforcement structures, particularly beneficial in high-load or dynamic furniture applications.

[0068] The furniture leg 100 may be fabricated using alternative materials, including advanced composites, carbon fiber, reinforced thermoplastics, or sustainable materials like recycled plastics or engineered wood composites, each selected to provide specific structural, aesthetic, or environmental advantages. Furthermore, interchangeable or modular components may allow users to selectively customize the furniture leg's appearance or functionality. For example, interchangeable decorative sleeves or coverings may be applied to match diverse interior design themes or user aesthetic preferences without altering the core structural components. These alternate embodiments clearly illustrate the broad adaptability and versatility of the present invention, highlighting potential modifications and enhancements that cater specifically to specialized furniture applications, evolving user needs, or distinct market segments.

[0069] Since many modifications, variations, and changes in detail can be made to the described preferred embodiments of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Furthermore, it is understood that any of the features presented in the embodiments may be integrated into any of the other embodiments unless explicitly stated otherwise. The scope of the invention should be determined by the appended claims and their legal equivalents.

Examples

Embodiment Construction

[0048]The following detailed description is merely exemplary in nature and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. For purposes of description herein, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in FIG. 1. Furthermore, there is no intention to be bound by any expressed or implied theo...

Claims

1. A height-adjustable furniture leg, comprising:a base configured to be mounted to an underside of a furniture frame;a leg member having an upper end and a lower end, the upper end being rotatably coupled to the base;an adjustment mechanism disposed at the upper end of the leg member, the adjustment mechanism configured to selectively vary the height of the leg member relative to the base; anda concealment structure positioned at an interface between the base and the upper end of the leg member, the concealment structure configured to obscure a parting seam created by adjustment of the leg member from a normal viewing perspective when the furniture is in use.

2. The height-adjustable furniture leg of claim 1, wherein the adjustment mechanism comprises a threaded connection between the base and the leg member, allowing for rotational height adjustment.

3. The height-adjustable furniture leg of claim 2, wherein the threaded connection includes a locking mechanism to prevent unintentional height changes.

4. The height-adjustable furniture leg of claim 1, wherein the concealment structure comprises an overlapping flange extending from the base, configured to cover the parting seam during adjustment.

5. The height-adjustable furniture leg of claim 1, wherein the leg member comprises an outer sleeve and an inner telescoping section, the inner telescoping section being configured to move relative to the outer sleeve to vary the height.

6. The height-adjustable furniture leg of claim 5, wherein the outer sleeve includes an internal guide structure configured to maintain axial alignment of the inner telescoping section.

7. The height-adjustable furniture leg of claim 1, wherein the adjustment mechanism is manually operable without requiring tools.

8. The height-adjustable furniture leg of claim 7, wherein the adjustment mechanism includes a grip-enhancing surface on an exterior portion of the leg member to facilitate manual rotation.

9. The height-adjustable furniture leg of claim 1, wherein the leg member comprises a cylindrical shape.

10. The height-adjustable furniture leg of claim 9, wherein the cylindrical shape includes a knurled or textured exterior surface to enhance grip for manual adjustment.

11. The height-adjustable furniture leg of claim 1, wherein the base is secured to the furniture frame using a plurality of fasteners arranged circumferentially around the base.

12. The height-adjustable furniture leg of claim 11, wherein the base includes pre-formed mounting holes to receive the plurality of fasteners.

13. The height-adjustable furniture leg of claim 1, wherein the concealment structure is configured to automatically reposition as the leg member is adjusted, maintaining coverage of the parting seam.

14. The height-adjustable furniture leg of claim 1, wherein the leg member is composed of a metal material selected from the group consisting of aluminum, steel, and an alloy thereof.

15. The height-adjustable furniture leg of claim 1, wherein the concealment structure is composed of a flexible material to allow for seamless coverage of the parting seam.

16. The height-adjustable furniture leg of claim 1, wherein the adjustment mechanism includes a detent system that provides discrete height settings.

17. The height-adjustable furniture leg of claim 1, wherein the adjustment mechanism is configured to provide a continuous range of height adjustment between a minimum and maximum position.

18. The height-adjustable furniture leg of claim 1, wherein the leg member further comprises a load-bearing foot at the lower end, the foot being configured to distribute weight evenly across a support surface.

19. A height-adjustable furniture leg, comprising:a base configured to be mounted to an underside of a furniture frame, the base including a plurality of pre-formed mounting holes for receiving fasteners;a leg member having an upper end and a lower end, the upper end being rotatably coupled to the base;an adjustment mechanism comprising a threaded connection between the base and the upper end of the leg member, the threaded connection configured to selectively vary the height of the leg member relative to the base through manual rotation;a locking mechanism operably engaged with the threaded connection to prevent unintentional height changes;a concealment structure comprising an overlapping flange extending from the base, the concealment structure configured to obscure a parting seam created by adjustment of the leg member from a normal viewing perspective when the furniture is in use; anda grip-enhancing surface disposed on an exterior portion of the leg member to facilitate manual rotation for height adjustment.

20. A height-adjustable furniture leg, comprising:a base configured to be mounted to an underside of a furniture frame, the base including a plurality of pre-formed mounting holes for receiving fasteners;a leg member having an upper end and a lower end, the upper end being rotatably coupled to the base, wherein the leg member comprises a cylindrical outer sleeve and an inner telescoping section configured to move relative to the outer sleeve to vary the height;an adjustment mechanism comprising a threaded connection between the base and the upper end of the leg member, the threaded connection configured to selectively vary the height of the leg member relative to the base through manual rotation;a detent system integrated with the adjustment mechanism, the detent system providing discrete height settings to ensure secure positioning at different height levels;a locking mechanism operably engaged with the threaded connection to prevent unintentional height changes;a concealment structure comprising an overlapping flange extending from the base, the concealment structure being composed of a flexible material configured to automatically reposition as the leg member is adjusted to obscure a parting seam from a normal viewing perspective when the furniture is in use;a grip-enhancing surface disposed on an exterior portion of the leg member to facilitate manual rotation for height adjustment; anda load-bearing foot at the lower end of the leg member, the load-bearing foot configured to distribute weight evenly across a support surface.

Images