9958results about "Screws" patented technology

A security fastener assembly is provided with a cap having a decorative bearing surface and a lower retention portion. A fastener body has: a threaded portion or securing the fastener assembly to a corresponding threaded feature on a vehicle; a stem opposite the threaded portion for receiving the cap, the stem having a security protrusion defining a distal end, an undercut formed adjacent the stem for cooperating with the lower retention portion of the cap, where the lower retention portion of the cap is secured in the undercut to maintain the cap on the fastener body; a keyed security drive feature formed between the threaded portion the stem portion where the fastener body is removable with the keyed security feature. Engaging the decorative bearing surface of the cap and rotating does not rotate the threaded portion of the fastener body.

A screw includes a shank extending axially from a head and thread convolutions spirally disposed on the shank. The head has a top surface, a conical surface opposite to the top surface, cutting units extending circumferentially of the top surface, accommodation portions recessedly provided in the conical surface, and ridge portions each located between every two adjacent accommodation portions. The accommodation portions and the ridge portions extend between the cutting units and the shank. Accordingly, the cutting units sever fibers and scrape burrs which incur a ragged edge of a workpiece, thereby preventing the entanglement of unsevered fibers. The ridge portions cut fibers into chips and guide chips to the accommodation portions for suitable accommodation of chips inside the accommodation portions, which attains a tight engagement between the screw and the workpiece, reduces screwing resistance, and allows the top surface to fit level with a surface of the workpiece.

A reaction washer includes a main body that defines an inner diameter that slidingly receives an associated threaded element therethrough so as to define a rotation axis. The main body includes a top surface and a bottom surface that face in opposite directions. The reaction washer also includes a first raised friction inducing surface that extends from at least one of the top surface and the bottom surface so as to be nonconcentric with respect to the rotation axis.

A threaded fastener including a head, a shank connected to the head at a first end of the shank, the shank includes a first portion, a second portion, a third portion, and a tip at an end of the shank opposite the head. The fastener includes a first helical thread formation extending outwardly from the second and third portions of the shank, and a second helical thread formation extending outwardly from a section of the third portion of the shank that is adjacent to the tip. The first helical thread formation defines grooves in the section of the third portion of the shank that is adjacent to the tip.

A screw includes a shank defining an exposed surface portion, a head and a drill section disposed at two opposite ends of the shank, and thread convolutions spirally disposed in a spiral direction and axially spaced apart. Each thread convolution has an upper thread flank and a lower thread flank. A groove is recessedly formed in the surface portion and extends annularly in the spiral direction, and a plurality of slots are recessedly formed in the surface portion and extends axially from at least one lower thread flank to meet the groove. Accordingly, the groove and the slots are adapted to enlarge spaces for moving and accommodating chips, thereby attaining a quick removal of chips, reducing screwing resistance, and accelerating a screwing operation. The accumulation of remaining chips within the groove and the slots facilitates a tight engagement between the screw and a workpiece and attains an anti-loosening effect.

A threaded fastener for securing a plate to a layered substrate is provided, as well as methods for installing the threaded fastener. An exemplary threaded fastener may include a head, and a shank having a longitudinal axis between a first end and a second end. The shank may be connected to the head at the second end. The shank may have a pointed terminus at the first end. The shank may have a first portion between the first end and a transition region. The first portion may include a first thread having a first thread profile that encircles the first portion. The shank may have a second portion between the transition region and the second end. The transition region may reside between the first portion and the second portion. The second portion may include a second thread having a second thread profile that encircles the second portion.

A threaded fastener for securing a plate to a layered substrate is provided, as well as methods for installing the threaded fastener. An exemplary threaded fastener may include a head, and a shank having a longitudinal axis between a first end and a second end. The shank may be connected to the head at the second end. The shank may have a pointed terminus at the first end. The shank may have a first portion between the first end and a transition region. The first portion may include a first thread having a first thread profile that encircles the first portion. The shank may have a second portion between the transition region and the second end. The transition region may reside between the first portion and the second portion. The second portion may include a second thread having a second thread profile that encircles the second portion.

A threaded fastener for securing a plate to a layered substrate is provided, as well as methods for installing the threaded fastener. An exemplary threaded fastener may include a head, and a shank having a longitudinal axis between a first end and a second end. The shank may be connected to the head at the second end. The shank may have a pointed terminus at the first end. The shank may have a first portion between the first end and a transition region. The first portion may include a first thread having a first thread profile that encircles the first portion. The shank may have a second portion between the transition region and the second end. The transition region may reside between the first portion and the second portion. The second portion may include a second thread having a second thread profile that encircles the second portion.

Alloy elements are reasonably matched, N and nitrides are added to form elements such as tungsten W, vanadium V, niobium Nb, cobalt Co, rare earth RE and the like for microalloying smelting, a forged and rolled material finished product is subjected to proper heat treatment, and the stainless steel subjected to heat treatment has good heat treatment performance through metallographic observation. According to the stainless steel, nanoscale carbides are separated out in a solid solution state, and fine particles mainly containing nitrides are dispersed and separated out in crystals in a thermodynamic state, so that the material is strengthened and does not diffuse to a crystal boundary, and the room-temperature mechanical property and the high-temperature mechanical property of the material are greatly improved; and when the stainless steel material produced by the method is used for manufacturing related products, the thickness of the stainless steel material can be reduced, and the overall input of the stainless steel material is greatly reduced, so that the large-scale application of noble metal strategic resource nickel is saved, and the aims of saving resources, energy and investment are fulfilled.

The present invention belongs to the field of tightening control methods and automatic tightening technology, and discloses a tightening control method and automatic tightening device for an aero-engine rotor based on bolt preload feedback. The automatic tightening device is based on a main body structure and is provided with a rotary table structure, a spherical guide structure and a skid platform structure to achieve the degree of freedom of movement of the automatic tightening device for an aero-engine rotor within an inner cavity space of the rotor, enabling the tightening structure to be fed and withdrawn; in addition, a preload detection structure is provided, which relies on an ultrasonic preload measurement system to measure a real-time preload of a bolt during a tightening process and transmit the value of the preload to a tightening gun to achieve a tightening method for preload feedback control.

A drywall anchor and a method for installing the drywall anchor. The drywall anchor includes a drilling element at the front end of a base body for the introduction into a gypsum plaster board in a self-drilling manner and a non-circular region having a cross-section including at least three corners at the outer contour thereof. In particular, the non-circular region forms a prism.

Studs, assemblies, and related methods may provide enhanced reliability of connections between components in high-power pumps. A stud may include a stud body having an anchor end positioned to be threadedly engaged with a fluid end block, and a fastener end positioned to be threadedly engaged with a fastener, thereby to secure the component and the fluid end block to one another. The stud body may include external anchor threads at the anchor end of the stud body having a buttress thread form, thereby to secure the anchor end of the stud body to the fluid end block. The stud body also may include external fastener threads at the fastener end of the stud body, and the external fastener threads may have a thread form different than the external anchor threads of the anchor end of the stud body.

A wall fastener assembly for use with a building wall system, with the wall fastener assembly including a fastener and an elongated, semi-rigid seal member. The fastener includes a shaft and a head, with the fastener configured to be secured to the wall system. The seal member includes opposed first and second ends, and a center bore that extends along the length of the seal member and is configured to receive the shaft of the fastener. When the fastener is secured to the wall system the first end of the seal member is configured to compress against a portion of the wall system, such as against a vapor barrier, to form a first seal and the opposite second end of the seal member is configured to form a second seal to thereby seal the wall fastener assembly against the wall system.

A fastening element, a fastening assembly and a method for fastening are described, such that the fastening element is configured so that it cooperates in such a way with an elongated element that it allows for a rotation of the fastening element about the central axis of the opening between a fastened state, in which a first angular position of the fastening element is transverse to the longitudinal axis of the elongated element and a removable state in which the second angular position is transverse to the longitudinal axis of the elongated element.

The invention relates to a three-dimensional adjustable hyperbolic special-shaped GRC curtain wall system, and belongs to the technical field of curtain walls. The three-dimensional adjustable hyperbolic special-shaped GRC curtain wall system comprises a keel frame, a curtain wall plate and a connecting cross rod, the connecting cross rod is fixedly connected to the end, facing the keel frame, of the curtain wall plate, and the surface of the connecting cross rod is sleeved with a connecting component in threaded connection with the keel frame; the connecting component comprises a first locking assembly in threaded connection with the keel frame, the top of the first locking assembly is fixedly connected with a depth adjusting assembly, and the top of the depth adjusting assembly is fixedly connected with a lateral adjusting assembly; an installation worker can trigger the anti-loosening assembly to discharge the liquid sealant while installing the second locking assembly, and the connecting components are integrally bonded and fixed together, so that the problem that an existing hyperbolic special-shaped GRC curtain wall system with a three-dimensional adjustable function is prone to loosening and even falling off due to the influence of external force is solved.

A blind rive includes a mandrel, a rivet body, and a magnetic washer having a circular arc angle. The mandrel includes a mandrel head and a shank. The shank includes a grip section, a groove section, and a pull section having a reverse tapered surface. The mandrel head is connected to one side of the grip section of the shank. The end surface of the mandrel head that is connected to one side of the shank has a circular arc surface. The grip section is the portion of shank close to the mandrel head. The groove section is disposed on the shank and connected to the grip section. The pull section has a reverse tapered surface disposed on the shank and connected to the groove section. The rivet body includes a through hole matching the mandrel, a rivet head, and a protruding edge structure.

A size-adjustable fastener includes: a first fastener and a second fastener. The first fastener is arranged with connection strips; an end of the connection strip is arranged with a limiting block; a transverse cross section of the limiting block is larger than that of the connection strip; the second fastener defines connection holes; each connection hole is communicated with a limiting hole, and the limiting hole is located at a side of the connection hole; the connection strip is inserted into the connection hole from a side of the second fastener; the connection strip is moved to approach the limiting hole to enable the limiting block to abut against the other side of the second fastener, enabling an end of the second fastener is connected to an end of the first fastener. The other end of the second fastener is connected to the other end of the first fastener.

A detachable multi-stage automotive fastener clip attaches a body panel to a chassis slot. The fastener clip includes a U-shaped upper clip having at least two wings laterally spaced apart. The wings include: a wing tip, a bent wing, an inclined plane. A flex point is formed on a lower wing portion operative to engage and detach with the chassis slot. A U-shaped lower clip removably attaches to the U-shaped upper clip. At least two walls are laterally spaced apart at an open wall end. A ramp, a shoulder and a retaining ledge are formed on the at least two walls away from the open wall end operative to engage the inclined plane. A base at a closed end opposite the open wall end is formed such that the base is formed between a lower wall portion from each of the at least two walls forming a U shape.

Fasteners, drivers, punches, fastener systems, and methods of making fasteners, drivers, punches, and fastener systems are disclosed herein. The fasteners, drivers, punches, and fastener systems include, in one example, stabilizing ribs and corresponding recesses.

A solar mounting system includes at least one photovoltaic module (“PV module”) having a module frame and a support structure including at least one elongated support rail configured to support the at least one photovoltaic module (“PV module”). A fastener assembly or hardware stack is used to mount and secure the at least one PV module to the elongated support rail of the solar mounting system. The fastener assembly includes a fastener having a fastener head including at least one abutment surface that prevents rotation of the fastener during mounting of the PV module to the support structure, and, optionally, at least one projection that pierces a protective coating applied to the PV module to thereby establish an electrical bond and grounding of the PV module with the support structure during installation.

The utility model provides a threaded connecting piece and battery pack, wherein the threaded connecting piece comprises a threaded rod and a flange plate, the threaded rod is used for being in threaded connection with a piece to be connected, the flange plate is provided with a press fit surface, one end of the threaded rod is connected to the press fit surface, the press fit surface is used for being pressed on the piece to be connected, and the threaded rod is connected with the flange plate. An anti-scraping cambered surface is arranged around the periphery of the pressing surface, and the anti-scraping cambered surface and the pressing surface are arranged in a tangent manner. The threaded connecting piece provided by the utility model can solve the technical problem that the threaded connecting piece is easy to cut out flying wires and chippings on a piece to be connected.

According to the composite protective coating for the bolt surface, the preparation method and the application, the composite coating takes a bolt of a common model of an iron tower as a substrate, and a cathode arc ion plating technology and a magnetron sputtering technology are combined; the preparation method comprises the four main steps of substrate surface pretreatment, metal bonding layer preparation, metal nitride bearing layer preparation and surface molybdenum disulfide solid self-lubricating layer preparation. According to the method, reliable preparation of the composite coating on the complex thread surface of the bolt is achieved, the anti-loosening capacity of the bolt is remarkably improved through the low friction coefficient, good bearing capacity and excellent wear resistance, and meanwhile the composite coating further has good corrosion resistance and has wide application prospects in iron towers for communication, electric power and the like.

A fastening device for keeping at least first and second parts assembled, the fastening device comprising a tubular body passing through the first and second parts, an expansion nut and a screw that is seated in the tubular body and cooperates with the expansion nut. To facilitate the removal of the fastening device, the screw has at least one shape, such as a recess positioned on the transverse face thereof, to prevent it from rotating using a first tool, and the expansion nut has at least one shape, such as a flat, to unscrew it using a second tool. Also an assembly comprising at least one such assembly device as well as a removal method.

A lock tab washer includes a washer body, the washer body defining a first side and a second side opposite the first side, the washer body defining a hole therethrough; an edge tab extending from the first side of the washer body, the edge tab define a first section and a second section, the second section bent relative to the first section; a nut tab extending from the second side of the washer body, the nut tab bent relative to the washer body; and a wing extending from the nut tab, the wing bent relative to the nut tab.

A fastener to connect a first component to a second component with an opening. The fastener includes a head with two lock tabs, each shaped with a sloped sidewall, and a lead-in portion that fits into the opening. A shank connects the lead-in portion to a push bar, which has at least one angled (chamfered) edge. Flexible legs extend between the head and the lead-in portion and compress as the lead-in portion is inserted. During installation, the chamfered edge of the push bar slides against the sloped sidewall of the lock tabs, allowing the push bar to move past them. Once in place, the lock tabs hold the push bar, keeping the flexible legs compressed and locking the fastener securely.

A screw includes a shank defining exposed surface sections between spaced-apart thread convolutions, a head and a drill portion disposed at opposite ends of the shank, and at least one knurl portion having troughs recessedly crossing each other within at least one surface section. Each thread convolution has a thread crest formed along a junction of two thread flanks, notches cut into the thread crest, cutting units each situated between every two adjacent notches, and cutting edges each formed around an outer periphery of each notch. Each cutting unit of one thread convolution is aligned with each corresponding notch of another adjacent thread convolution. The cutting units and the cutting edges facilitate a quick cutting effect. Chips are allowed to travel in the notches and the troughs, thereby attaining a quick removal of chips, achieving a suitable accumulation of chips for a tight engagement, and attaining an anti-loosening effect.

A method includes operating an automatic tool at a first setting to drive a flow drill screw (FDS) into a substrate. The first setting is configured to rotate the FDS at a first rotational speed and apply a first axial feed force. The first setting is configured to cause flow of the substrate to permit the FDS to penetrate the substrate. The method includes detecting a predetermined first trigger condition including at least one of a depth gradient and a depth and switching the tool from the first setting to a second setting in response to a predetermined second trigger condition including at least one of a predetermined axial feed distance after detecting the first trigger condition and a predetermined time delay after detecting the first trigger condition. The second setting is configured to rotate the FDS at a lower rotational speed and apply a lower axial feed force.

Examples relate to a wing-nut (114) for a tolerance compensating fastener (100) cooperable with a threaded fastening element (116). The wing-nut (114) having a rigid insert (306) and a body component (300). The rigid insert (306) formed as a hollow cylindrical body and comprising a plurality of retention elements (308) and a plurality of threads (302) formed on an inner wall of the hollow cylindrical body. The body component (300) surrounding the rigid insert (306), the body component (300) having an opening, coaxial with a central longitudinal axis of the rigid insert (306), to create a through-hole with the hollow cylindrical body to receive the threaded fastening element (116). Each of the plurality of retention elements (308) is encapsulated by the body component (300) to be interlocked and fixed in the body component (300).

A method (10) for joining components (20, 22), particularly metal components, by means of a joining element (12) which is deformed during the joining process, comprising the following steps: coating (S2, S3) a joining element (12) with a temperature-stable coating (B1,B2) ; preheating (S6) at least one of at least two components (20, 22) in an area of a joining location to a temperature in the range from 90°C to 1.400 °C, preferably by plasma-heating, laser-heating, electric arc heating and / or induction heating, wherein the components (20, 22) are stacked on top of each other; and driving the coated joining element (12) into the stacked components (20, 22).