Laser level

Abstract

The present invention relates to a laser level. Various laser level designs are shown. In one example, the laser level is a multi-plane laser level that emits planes and emits points from multiple holders. In various implementations, the laser level is a three-plane laser level that emits three planes and two points. The laser level includes a housing that surrounds a core. The core includes a pendulum and a beam splitter configured to emit two point beams. The core also includes one or more arms, where each arm has a plane t-conic mirror assembly configured to emit a plane.

Description

Cross-reference to related applications

[0001] This application claims the benefit and priority of U.S. Provisional Application No. 63 / 793,951, filed April 24, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention generally relates to the field of tools. Specifically, it relates to laser levels, such as three-plane laser levels, two-point laser levels, or combined laser levels, which project one or more laser planes and laser points onto a workpiece or working surface. Summary of the Invention

[0003] One embodiment of the present invention relates to a laser level, comprising a housing and a core located within the housing. The core includes a support structure, a first arm, a second arm, a third arm, and a fourth arm. The first arm extends from the support structure and is configured to emit a first laser projection plane. The second arm extends from the support structure and is configured to emit a second laser projection plane. The third arm extends from the support structure and is configured to emit a third laser projection plane. The fourth arm extends from the support structure and is configured to emit a first laser point and a second laser point. The first laser point and the second laser point are collinear.

[0004] Another embodiment of the invention relates to a laser level, comprising a housing and a core located within the housing. The core includes a support member, a first arm, a second arm, a third arm, and a fourth arm. The first arm extends from the support member and is configured to emit a first laser projection plane. The second arm extends from the support member and is configured to emit a second laser projection plane. The third arm extends from the support member and is configured to emit a third laser projection plane. The third arm has a generally horizontal orientation relative to the support member. The fourth arm extends from the support member in a generally horizontal orientation relative to the support member and includes a beam splitter. A first angle defined between the fourth arm and the third arm is 90 degrees to 135 degrees.

[0005] Another embodiment of the present invention relates to a laser level, comprising a housing and a core located within the housing. The core includes a support member, a first arm, a second arm, a third arm, and a fourth arm. The first arm extends from the support member and is configured to emit a first laser projection plane. The second arm extends from the support member and is configured to emit a second laser projection plane. The third arm extends from the support member and is configured to emit a third laser projection plane. The fourth arm extends from the support member and is configured to emit a first laser spot projection and a second laser spot projection. A first angle is defined between the fourth arms, and a second angle is defined between the fourth arm and the second arm. The second angle is the same as the first angle.

[0006] In one embodiment, the laser level also includes a support configured to support the housing. The housing is rotatable relative to the support about a rotation axis. In another embodiment, the housing is rotatable between a first position and a second position.

[0007] Additional features and advantages will be set forth in the following detailed description and will be readily understood by those skilled in the art from the description, or will be recognized by practice of the embodiments as described in the written description and / or illustrated in the accompanying drawings. It should be understood that both the foregoing general description and the following detailed description are exemplary.

[0008] The accompanying drawings are included to provide further understanding and are incorporated in and constitute a part of this specification. The drawings illustrate one or more embodiments and, together with the description, serve to explain the principles and operation of the various embodiments. Attached Figure Description

[0009] This application will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which the same reference numerals refer to the same elements:

[0010] Figure 1 This is a perspective view of a laser level with a laser-emitting plane and laser point at a first position, according to an exemplary embodiment.

[0011] Figure 2 According to an exemplary embodiment, a laser plane and laser point are emitted at a second position. Figure 1 A 3D view of a laser level.

[0012] Figure 3 According to an exemplary implementation Figure 1 A 3D view of a laser level, with the support and power supply removed.

[0013] Figure 4 According to an exemplary implementation Figure 1 A three-dimensional view of the laser level from below, with the support and power supply removed.

[0014] Figure 5 According to an exemplary implementation Figure 1 A side view of a laser level, with the support and power supply removed.

[0015] Figure 6 According to an exemplary implementation Figure 1 A top view of a laser level.

[0016] Figure 7 According to an exemplary implementation Figure 1A 3D view of a laser level, showing its internal components.

[0017] Figure 8 The laser emission plane and laser point are according to an exemplary embodiment. Figure 7 A 3D view of a laser level, with the housing removed.

[0018] Figure 9 According to an exemplary implementation Figure 7 A 3D view of a laser level, with the housing removed.

[0019] Figure 10 It is according to the exemplary implementation along Figure 9 A cross-sectional view of the planar conical mirror assembly taken from line 10-10.

[0020] Figure 11 It is according to the exemplary implementation along Figure 9 A cross-sectional view of the distributor assembly taken from line 11-11.

[0021] Figure 12 This is a top view of the laser level core according to an exemplary embodiment.

[0022] Figure 13 This is a top view of the core of a laser level according to another exemplary embodiment. Detailed Implementation

[0023] Referring generally to the accompanying drawings, various embodiments of the laser projection device are shown. As discussed herein, the applicant has developed an improved laser projection device configured to project three planar lasers and two point lasers respectively. As will generally be understood, many workers use different laser levels depending on the environment, specific application, and user preference. Using separate three-planar laser devices and two-point laser devices to adapt to different environments requires the user to transport multiple laser devices to the work site and then switch between lasers for different tasks.

[0024] For example, on a construction site, workers might find a two-point laser level more convenient for applications requiring the transfer of a point on the ground to a point on the ceiling (e.g., suspending fixtures, installing pipes, etc.). However, on the same construction site, workers might find a three-plane laser level more suitable and / or more efficient for other tasks (e.g., leveling, such as installing space frames for cabinets, aligning vertical surfaces of walls or columns, etc.). While a three-plane laser level can be used to produce dots or points (e.g., where two planes intersect on the ground), the brightness of the remaining lines can obstruct the visibility of the intersection, making it difficult for users to pinpoint the exact center of the intersection.

[0025] The applicant argues that the laser levels discussed herein—including three-plane and two-point laser levels—improve workplace efficiency. For example, workers will be able to quickly switch between tasks suited to each laser level without having to retrieve and set up individual laser devices. Furthermore, by reducing the number of laser levels in the workplace from two to one, the applicant believes that interference between different laser devices is reduced.

[0026] In various embodiments, the laser level discussed herein has a core comprising: a fourth arm with a dividing point (e.g., the dividing point is configured to emit two points); three arms, each including a mirror such as a conical mirror (e.g., the mirror is configured to emit a plane); and a self-adjusting pendulum.

[0027] In various embodiments, one of these arms extends vertically from the core, while the second, third, and fourth arms extend generally horizontally. In a specific embodiment, the second arm extends at a 135-degree angle relative to the fourth arm. In another specific embodiment, the second and third arms each extend at a 135-degree angle relative to the fourth arm. The applicant believes that this arrangement provides improved balance and a more compact size for the laser level because the fourth arm acts as a counterweight to the other arms. In other words, a two-point laser level (e.g., a dividing point) with planar components positioned at 135 degrees in either direction achieves core balance without requiring a larger counterweight. In another specific embodiment, the fourth arm extends at a 90-degree angle relative to the second arm.

[0028] Reference Figures 1 to 2 The diagram illustrates various aspects of a laser beam generating apparatus, shown as a laser level 10. In various embodiments, the laser level 10 is a three-plane laser and a two-point laser. The laser level 10 includes a housing 14. In various embodiments, the laser level 10 includes a support member shown as a bracket 12. In various embodiments, the bracket 12 is movable to adjust the position of the laser level 10 and / or the housing 14. In various embodiments, the bracket 12 includes a platform 15 and a wall 17. In this embodiment, the platform 15 extends outward from the wall 17 in a generally horizontal orientation (e.g., 90 degrees plus or minus 10 degrees). The housing 14 of the laser level 10 is located on the platform 15.

[0029] In a specific embodiment, the bracket 12 is secured to the housing 14 of the laser level 10 by fasteners (e.g., screws, bolts, etc.). In a specific embodiment, the bracket 12 is an L-shaped bracket. In various embodiments, the bracket 12 is a magnetic L-shaped bracket. In a specific embodiment, the bracket 12 is a magnetic L-shaped bracket, wherein magnetic components are provided on and / or within the wall 17. In other words, this magnetic L-shaped bracket 12 can be magnetically coupled to a magnetic surface (e.g., a wall, etc.) to support the laser level 10.

[0030] In various embodiments, the laser level 10 includes a power source, such as a battery. In a specific embodiment, the laser level 10 includes a power source, such as a handheld tool battery 13 connected to a bracket 12. In a specific embodiment, the bracket 12 is located between the battery 13 of the laser level 10 and the housing 14. In a specific embodiment, the battery 13 is a rechargeable lithium-ion battery. In other embodiments, the battery is located within the housing 14.

[0031] In various embodiments, the laser level 10 includes one or more protective retainers, shown as retainers 16, 18, and 20. In a specific embodiment, the laser level 10 includes a first retainer 16, a second retainer 18, and a third retainer 20. In this embodiment, each retainer 16, 18, and 20 is fixed to the housing 14. In this embodiment, a first plane 30 is associated with the first retainer 16, a second plane 32 is associated with the second retainer 18, and a third plane 34 is associated with the third retainer 20. In other words, planes 30, 32, and 34 will project from each retainer 16, 18, and 20.

[0032] In various embodiments, the laser level 10 further includes a two-point laser having a first laser line or point projection 26 and a second laser line or point projection 28. As will generally be understood, projection 26 and projection 28 are collinear. In a specific embodiment, the first laser point projection 26 and the second laser point projection 28 are parallel to the axis of rotation 36. The laser level 10 projects laser line projections 26, 28, which appear as points on the work surface. In other specific embodiments, the axis of rotation 36 is at an angle relative to the work surface, and the point projections 26, 28 are self-leveling. In a specific embodiment, the laser level 10 has an additional axis of rotation to allow for fine adjustments, which is aligned with the intersection of the two vertical laser lines.

[0033] As will be discussed in more detail below, typically each cage 16, 18, 20 provides such a space / area for one or more components of the laser core 54 (see, for example, see...). Figure 7(Passing through this space / area, one enters the overall space located within the cage 16 from the housing 14. In a specific embodiment, the first plane 30 is a horizontal plane, and the second plane 32 and the third plane 34 are each a vertical plane (along...) Figure 1 (as shown in the orientation). In various specific embodiments, the first retainer 16 is located on the upper-facing surface 48 of the housing 14 (along the orientation shown). Figure 2 (The orientation shown). The second retainer 18 is located on the first side surface 47 of the housing 14. The third retainer 20 is located on a second side surface 49 of the housing 14, which is different from the first side surface 47. In various embodiments, the front surface 51 is located between the first side surface 47 and the second side surface 49.

[0034] In various embodiments, retainers 16, 18, and 20 are fixedly or rigidly connected to housing 14. In other words, retainers 16, 18, and 20 are non-rotatably connected to housing 14. In this embodiment, retainers 16, 18, and 20 are fixedly connected to housing 14 via fasteners (e.g., bolts, screws, etc.). It should be understood that retainers 16, 18, and 20 can be similarly positioned on different surfaces of housing 14 to project a vertical or horizontal laser plane onto the working surface.

[0035] In various embodiments, each retainer 16, 18, 20 includes a frame 24 defining a plurality of apertures or openings 21. In a specific embodiment, the frame 24 includes legs defining the apertures 21. In a specific embodiment, the frame 24 includes four legs defining four apertures 21. In various embodiments, each retainer 16, 18, 20 includes a plurality of windows 22 located within the frame 24. In a specific embodiment, each retainer 16, 18, 20 includes four windows. As will generally be understood, the laser projection or laser projection plane 30, 32, 34 is projected through at least one of the plurality of apertures 21 or the plurality of windows 22.

[0036] like Figures 1 to 2 As shown, the housing 14 of the laser level is in a forward-facing first position. The front portion 38 of the housing 14 is located in front of or spaced apart from the support 12, and specifically, the front portion 38 of the housing 14 is located in front of or spaced apart from the wall 17 of the support 12. As will generally be understood, the housing 14 is movable about a rotation axis 36. In a specific embodiment, the rotation axis 36 extends between the upper-facing surface 48 and the lower-facing surface 46 of the housing 14 (e.g., see...). Figures 1 to 2 (or orientation in the middle). When the user wants to change the position of planes 30, 32, 34 and / or use the two-point laser portion of the laser level 10, the housing 14 moves to the second position around the rotation axis 36.

[0037] like Figure 2 As shown, when a user wants to use the two-point laser portion of the laser level 10, the housing 14 can be rotated so that the rear portion 40 is away from the bracket 12 (i.e., positioned at a greater distance from the bracket 12). When the laser level 10 is in the first position, the rear portion 40 faces the bracket 12 (i.e., positioned adjacent to or at a shorter distance from the bracket 12), and specifically, the rear portion 40 faces the wall 17 of the bracket 12. The rear portion 40 of the laser level 10, and specifically the rear portion 40 of the housing 14, includes an upper inclined surface 42 and a lower inclined surface 44. A first window 50 is located on the upper inclined surface 42, and a second window 52 (e.g., see...) Figure 4 It is located on the downward inclined surface 44.

[0038] Reference Figures 3 to 6 The illustration shows details of a laser level 10 according to an exemplary embodiment, and specifically a housing 14. A first point 26 is projected through a first window 50, and a second point 28 is projected through a second window 52. The first point projection 26 and the second point projection 28 extend along the main axis or longitudinal axis of the housing 14. As will generally be understood, the first line projection 26 and the second line projection 28 produce a point on the surface where the ends of their respective projections 26, 28 engage with the object.

[0039] In a specific embodiment, the first point projection 26 and the second point projection 28 are generally perpendicular to the first plane 30 (e.g., by about 90 degrees plus or minus 5 degrees). In a specific embodiment, the first point projection 26 and the second point projection 28 are substantially perpendicular to the first plane 30 (e.g., by about 90 degrees plus or minus 65 arcseconds). In a specific embodiment, the first point projection 26 and the second point projection 28 have the same orientation as the second plane 32 and the third plane 34. In other words, in this embodiment, the first point projection 26 and the second point projection 28 extend vertically, and planes 32 and 34 also extend vertically.

[0040] like Figure 6 As shown, the first plane 30 has an orientation that is generally parallel to the upper surface 48. As will be understood, in specific embodiments, the first plane 30 is self-leveling. In various embodiments, the first plane 30 has an orientation that is generally parallel to the lower surface 46. In specific embodiments, the first plane 30 has an orientation that is generally parallel to both the lower surface 46 and the upper surface 48.

[0041] Reference Figures 7 to 9 The diagram shows details of the core 54 of a laser level 10 according to an exemplary embodiment. Typically, the laser generator or core 54 (see, for example, see...) Figure 7The laser core 54 is located within the housing 14. Typically, the laser core 54 includes various components for generating a laser line or laser plane associated with the laser level 10. These components include one or more laser emitting devices (e.g., laser diodes, etc.), various optical components (e.g., lenses, collimators, mirrors, beam shapers, etc.), and supporting hardware (e.g., leveling pendulums, position sensors, electronic controllers, etc.). In other embodiments, the laser level 10 includes two separate cores within the housing 14. In other words, in some embodiments, the laser level 10 includes one core for generating a three-plane laser projection and a separate core for generating a two-point laser projection.

[0042] In various embodiments, the core 54 includes a support structure 64 and a component shown as a vertical member 66 extending upward from the support structure 64. In a specific embodiment, the vertical member 66 extends along the axis of rotation 36. As will be understood, when the laser level 10 is leveled, the vertical member 66 will be angled to and not aligned with the axis of rotation 36. Figure 8 As shown, one or more arms 68, 74, 80 extend from the vertical member 66. In a specific embodiment, three arms 68, 74, 80 extend from the vertical member 66. In a specific embodiment, three arms 68, 74, 80 and a fourth arm 56 extend from the vertical member 66. In various embodiments, the pendulum 55 is coupled to the vertical member 66. In a specific embodiment, the pendulum 55 is located below the vertical member 66. When the pendulum 55 is at rest, the pendulum 55 is generally vertical.

[0043] In various embodiments, the pendulum 55 is a self-leveling pendulum. In a specific embodiment, the pendulum 55 has a gravity-based leveling system (e.g., a series of shafts and bearings). As will generally be understood, in this embodiment, the pendulum 55 floats freely to self-level based on gravity within an angular range (e.g., approximately 4 degrees). In other embodiments, the pendulum 55 has an electronic leveling system. This electronic leveling system includes one or more bubble vials and photodiodes to determine the horizontal position on multiple axes (e.g., x-axis, y-axis, z-axis). In other embodiments, the electronic leveling system includes an accelerometer. In a specific embodiment, a motor is used to level the core.

[0044] The fourth arm 56 includes a first end 58 connected to the vertical member 66 and a second end 60 opposite thereto. The second end 60 includes one or more holes 62 configured to allow a first point projection 26 and a second point projection 28 to be projected outward from the fourth arm 56.

[0045] In various embodiments, the laser level 10, and particularly the core 54, includes a first arm 68. In specific embodiments, the first arm 68 is collinear with the vertical member 66. In various embodiments, the first arm 68 extends along the axis of rotation 36. In other embodiments, the first arm 68 is offset from the axis of rotation 36. The first arm 68 extends between a first end 70 and an opposite second end 72. The first end 70 is coupled to the vertical member 66. The first arm 68 is associated with a first retainer 16 and a first plane 30.

[0046] The laser level 10 and / or core 54 also include a second arm 74. The second arm 74 extends between a first end 76 and a second end 78. The first end 76 is coupled to the vertical member 66. In one embodiment, the second arm 74 extends from the vertical member 66 and has a horizontal orientation. In another embodiment, the second arm 74 is perpendicular to the vertical member 66 and / or the first arm 68. In yet another embodiment, the second arm 74 is parallel to the pendulum 55. In other words, the second arm 74 and the pendulum 55 extend outward from the vertical member 66 in the same orientation. The second arm 74 is associated with the second holder 18 and the second plane 32.

[0047] The laser level 10 and / or core 54 also include a third arm 80. The third arm 80 extends between a first end 82 and a second end 84. The first end 82 is coupled to the vertical member 66. In a specific embodiment, the third arm 80 extends from the vertical member 66 and has a horizontal orientation. In a specific embodiment, the third arm 80 is generally perpendicular to the vertical member 66 and / or the first arm 68. In a specific embodiment, the third arm 80 is generally parallel to the second arm 74. In other words, the third arm 80 and the second arm 74 each extend outward from the vertical member 66 in the same orientation (e.g., generally horizontal). The third arm 80 is associated with the third holder 20 and the third plane 34.

[0048] Reference Figure 10 The diagram shows a cross-sectional view of a planar conical mirror assembly 69 of the first arm 68 according to an exemplary embodiment. In a specific embodiment, a conical mirror 90 is located within a retainer 16, and a laser beam 94 generated by a laser diode located within a housing 14 and / or the first end 70 is guided through an aperture 95 and centered on the tip 97 of the conical mirror 90 to produce a projected laser plane 30. As will generally be understood, the conical mirror 90 has a reflective surface that divides the laser beam 94 into 360 degrees to produce a complete plane. The conical mirror 90 is located within a housing 92 at the second end 72 of the first arm 68. In various embodiments, the second arm 74 and the third arm 80 each include a conical mirror assembly substantially identical to that of the first arm 68, which are used to produce laser planes 32 and 34, respectively.

[0049] Reference Figure 11 The diagram shows a cross-sectional view of a beam splitter or dot splitter 57 of the fourth arm 56 according to an exemplary embodiment. In a specific embodiment, a mirror 96 is located within the fourth arm 56, and specifically within a housing 98, and a laser beam 100 generated by a laser diode within the housing 14 and / or the first end 76 is guided through an aperture 101 and centered on the tip 103 of the mirror 96 to produce a first dot projection 26 and a second dot projection 28. In a specific embodiment, the mirror 96 is a right-angle prism (e.g., two reflecting surfaces meet at a right angle or 90 degrees). As will generally be understood, the right-angle prism splits the laser beam 100 into two linear directions to produce two points as described above. The mirror 96 is located within a housing 92 at the second end 60 of the fourth arm 56.

[0050] Reference Figure 12 The diagram shows a top view of the core 54 according to an exemplary embodiment. In various embodiments, the fourth arm 56 includes a side surface 202, and the third arm 80 includes a side surface 104. In various embodiments, an angle 106 is defined between the fourth arm 56 and the third arm 80. In specific embodiments, the angle 106 is 90 degrees to 135 degrees, specifically 100 degrees to 135 degrees, and more specifically 120 degrees to 135 degrees. In specific embodiments, the angle 106 is approximately 135 degrees (e.g., 135 degrees plus or minus 10 degrees). In specific embodiments, 90 degrees ≤ angle 106 ≤ 135 degrees.

[0051] In other words, in a specific embodiment, the third arm 80 extends at a 135-degree angle relative to the fourth arm 56. In a specific embodiment, the second arm 74 and the third arm 80 each extend at a 135-degree angle relative to the fourth arm 56. In other words, in various specific embodiments, the first angle defined between the third arm 80 and the fourth arm 56, and the second angle defined between the second arm 74 and the fourth arm 56, are the same. As previously stated, the applicant believes that this arrangement of arms 74, 80, and 56 provides improved balance and / or weight for the laser level 10 because the fourth arm 56 acts as a counterweight for arms 74 and 80.

[0052] Reference Figure 13 The diagram shows a top view of core 154 according to an exemplary embodiment. Core 154 can be used with laser level 10. Except for the differences described herein, core 154 is substantially the same as core 54.

[0053] In various embodiments, the fourth arm 156 includes a side surface 202, and the third arm 180 includes a side surface 204. In various embodiments, an angle 206 is defined between the fourth arm 156 and the third arm 180. In specific embodiments, the angle 206 is 90 degrees to 135 degrees, specifically 90 degrees to 120 degrees, and more specifically 90 degrees to 100 degrees. In specific embodiments, the angle 206 is approximately 90 degrees (e.g., 90 degrees plus or minus 5 degrees). In specific embodiments, 90 degrees ≤ angle 206 ≤ 135 degrees.

[0054] In other words, in this embodiment, the third arm 180 extends at a 90-degree angle relative to the fourth arm 156. In this embodiment, the second arm 174 extends at a 90-degree angle relative to both the second arm 174 and the first arm 168. In this embodiment, the second arm 174 is collinear with the fourth arm 156.

[0055] It should be understood that the accompanying drawings illustrate exemplary embodiments in detail, and it should be understood that this application is not limited to the details or methods set forth in the description or illustrated in the drawings. It should also be understood that the terminology is for descriptive purposes only and should not be considered limiting.

[0056] In view of this description, other modifications and alternative embodiments of various aspects of this disclosure will be apparent to those skilled in the art. Therefore, this description is to be interpreted as illustrative only. The constructions and arrangements shown in the various exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, many modifications (e.g., variations in the size, dimensions, structure, shape and proportion, parameter values, mounting arrangements, use of materials, color, orientation, etc.) are possible without substantially departing from the novel teachings and advantages of the subject matter described herein. Some elements shown as integrally formed may be constructed from multiple parts or elements, the positions of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be changed or varied. The order or sequence of any process, logical algorithm, or method steps may be changed or reordered according to alternative embodiments. Other substitutions, changes, variations, and omissions may also be made to the design, operating conditions, and arrangements of the various exemplary embodiments without departing from the scope of this disclosure.

[0057] Unless otherwise expressly stated, no method described herein is intended to be construed as requiring its steps to be performed in a particular order. Therefore, no specific order is intended to be inferred unless a method claim actually describes the order by which its steps are to be followed, or unless the claims or description specifically state that these steps should be limited to a particular order. Furthermore, as used herein, the article “a” is intended to include one or more parts or elements and is not intended to be construed as meaning only one.

[0058] For the purposes of this disclosure, the term "connection" means that two components are directly or indirectly linked to each other. Such a connection may be inherently fixed or inherently movable. This connection can be achieved by the two components and any additional intermediate components forming a single unit, or by the attachment of two components or two components and any additional components to each other. Such a connection may be inherently permanent, or alternatively, it may be inherently removable or releasable. As used herein, a "rigid connection" refers to two components connected such that the two components move together in a fixed positional relationship when subjected to forces.

[0059] Although the present application describes specific combinations of features in the appended claims, various embodiments of the invention relate to any combination of any features described herein, whether or not such combinations are currently claimed, and any such combination of features may be claimed in this or a future application. Any feature, element, or component of any exemplary embodiment discussed above may be used alone or in combination with any feature, element, or component of any other embodiment discussed above.

[0060] In various exemplary embodiments, as shown in the accompanying drawings, relative dimensions, including angles, lengths, and radii, are drawn to scale. Actual measurements of the drawings will reveal the relative dimensions, angles, and scales of the various exemplary embodiments. The various exemplary embodiments extend to a wide range around the absolute and relative dimensions, angles, and scales that can be determined from the drawings. The various exemplary embodiments include any combination of one or more relative dimensions or angles that can be determined from the drawings. Furthermore, actual dimensions not explicitly stated in this description can be determined by combining the ratios of the dimensions measured in the drawings with the explicit dimensions stated in this description.

Claims

1. A laser level, comprising: case; as well as Core portion, located within the housing, the core portion comprising: Support structure; A first arm extends from the support structure and is configured to emit a first laser projection plane; A second arm extends from the support structure and is configured to emit a second laser projection plane; A third arm, extending from the support structure, is configured to emit a third laser projection plane; and The fourth arm extends from the support structure and is configured to emit a first laser point and a second laser point, wherein the first laser point and the second laser point are collinear.

2. The laser level according to claim 1, wherein, The first arm extends vertically from the support structure, and the second and third arms each extend in a substantially perpendicular orientation relative to the first arm.

3. The laser level according to claim 1 further includes a bracket, the bracket being configured to support the housing, wherein, The housing is movable relative to the support about a rotation axis.

4. The laser level according to claim 3, wherein, The first arm extends along the axis of rotation.

5. The laser level according to claim 1, wherein, The fourth arm further includes a first end connected to the support structure and a second end opposite to the first end, wherein the second end includes a right-angle prism.

6. The laser level according to claim 1, wherein, The first arm further includes a first end connected to the support structure and a second end opposite to the first end of the first arm, wherein the second end of the first arm includes a conical mirror.

7. The laser level according to claim 1, wherein, The core also includes a pendulum connected to the support structure.

8. The laser level according to claim 7, wherein, The pendulum is a self-leveling pendulum.

9. The laser level according to claim 1, wherein, The angle defined between the fourth arm and the third arm is approximately 135 degrees.

10. The laser level according to claim 9, wherein, The angle defined between the fourth arm and the second arm is approximately 135 degrees.

11. The laser level of claim 1, further comprising a first retainer fixed to the housing and associated with the first laser projection plane, the first retainer including a plurality of openings, wherein, The first laser projection plane is projected through at least one of the plurality of orifices.

12. A laser level, comprising: case; as well as Core portion, located within the housing, the core portion comprising: Support components; A first arm extends from the support member and is configured to emit a first laser projection plane; A second arm extends from the support member and is configured to emit a second laser projection plane. A third arm, extending from the support member, is configured to emit a third laser projection plane, wherein the third arm has a generally horizontal orientation relative to the support member; and A fourth arm, which extends in a generally horizontal orientation relative to the support member, includes a beam splitter. The first angle defined between the fourth arm and the third arm is 90 to 135 degrees.

13. The laser level according to claim 12, wherein, The first angle is between 120 and 135 degrees.

14. The laser level according to claim 12, wherein, The first angle is between 90 and 120 degrees.

15. The laser level according to claim 12, wherein, The second angle defined between the fourth arm and the second arm is 90 degrees to 135 degrees.

16. The laser level according to claim 12, wherein, A second angle is defined between the fourth arm and the second arm, wherein the second angle is the same as the first angle.

17. The laser level according to claim 12, wherein, The second arm is collinear with the fourth arm.

18. A laser level, comprising: case; as well as Core portion, located within the housing, the core portion comprising: Support components; A first arm extends from the support member and is configured to emit a first laser projection plane; A second arm extends from the support member and is configured to emit a second laser projection plane. A third arm, extending from the support member, is configured to emit a third laser projection plane; and A fourth arm extends from the support member and is configured to emit a first laser point projection and a second laser point projection. A first angle is defined between the fourth arm and the third arm, and a second angle is defined between the fourth arm and the second arm, wherein the second angle is the same as the first angle.

19. The laser level according to claim 18, wherein, The fourth arm has a first orientation relative to the support member, wherein the second arm and the third arm each extend in the first orientation, and the first arm has a second orientation different from the first orientation.

20. The laser level according to claim 18, further comprising: A first retainer is fixed to the housing and associated with the first laser projection plane; A second retainer is fixed to the housing and associated with the second laser projection plane; as well as A third retainer is fixed to the housing and associated with the third laser projection plane; The first holder, the second holder, and the third holder each include a plurality of orifices, through which the first laser projection plane, the second laser projection plane, and the third laser projection plane are projected.

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