1582results about "Dowels" patented technology

Expansion anchor having an anchor bolt having a threaded zone for introducing tensile load into the anchor bolt, and an expansion sleeve surrounding the anchor bolt, wherein the anchor bolt has an expansion body located in a front region of the anchor bolt, wherein the expansion body has a converging zone for expanding the expansion sleeve, wherein the anchor bolt further has a flange that provides an abutment for the expansion sleeve, wherein the flange is arranged between the expansion body and the threaded zone, wherein the anchor bolt further has a neck that is arranged between the expansion body and the flange, and which adjoins both the expansion body and the flange, wherein the expansion sleeve surrounds the neck of the anchor bolt, characterized in that the following holds for the cross-sectional area At of the threaded zone and for the cross-sectional area An of the neck: (At / An) ≤ 1.3.

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.

A drilling and fixing device for hollow walls or panels comprising a front plate or stop 10 for resting on the panel surrounding and allowing access to the hole in which the device fits, a mounting body 20 forward of the plate and a pivoting arm 40 mounted on the body. The pivoting arm has a cutting surface on the forward part of the arm and is moveable from a rear position in the mounting body in which its axial direction is fixed to allow a hole to be drilled in the panel and a forward position in the mounting body in which position it can pivot to lie approximately horizontal to the panel when in use. The movement into the forward position and the pivoting of the arm can be brought about by the insertion of a screw through the front plate. The screw may engage the mounting body to pull it back, with the arm until the device is secure in the hole. The device may have two arms where the blades on the forward ends overlap when in the rear position to cooperate in the drilling process.

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 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.

Anchor Sleeve, Arrangement and Method of SecuringThe invention relates to an anchor sleeve for an injection system for securing of an anchor element in an opening in an article, especially in a borehole in masonry, wherein the anchor sleeve consists at least in sections of flexible permeable open-cell foam.

An attachment structure includes a cross bar body extending between a first end and a second end, a first mount coupled to the first end, and a second mount coupled to the second end. The first mount and the second mount each include at least one cleat that is selectively securable to a base plate that includes a plurality of mounting apertures.

A filter arrangement has a first body member with a first axial front surface and a first radial sealing surface, a second body member with a second axial front surface and a second radial sealing surface, a contact portion and an elastic contact element. The first and second body members complementarily couple together with a connecting device. In a coupled state, the contact portion and the elastic contact element are axially compressed between the first and second axial front surface. The second radial sealing surface has a groove housing a first sealing element. When brought into the coupled state, the first radial sealing surface at least partially covers the groove of the second radial sealing surface before the contact portion and elastic contact element are at least partially axially compressed between the first and second axial front surface. When coupled, the first radial sealing surface completely covering the groove.

Wet cladding methods are disclosed which allow for construction and concomitant cladding of back-up walls. The end-cladding elements are attached to the wall using undercut anchors which are inserted into holes on the back surface of the end-cladding elements.

A locking-mode-selectable lock bolt and nut device comprises a bolt and a nut, the main fastening nut is arranged on the bolt in a sleeving manner; the fixed locknut is arranged on the bolt in a sleeving manner and is positioned above the main fastening nut; wherein a bolt locking groove is formed in the outer wall of one side of the bolt in the length direction, the section of the bolt locking groove is triangular, an acute angle is formed by two side faces in the bolt locking groove, one side face is arranged in the radial direction of the bolt, and the other side face is an inclined face; mounting through holes are symmetrically formed in two opposite surfaces of the fixed locknut, and a screw hole, a round hole and a square hole are sequentially formed in each mounting through hole from outside to inside; the inner diameter of the round hole is larger than that of the screw hole, and the width of the square hole is smaller than that of the round hole. And the two locking assemblies are respectively inserted into the two mounting through holes of the fixed locknut.

Methods of concurrently constructing and cladding concrete walls are disclosed. Methods of securing undercut anchors into the back surface of end-cladding elements are further disclosed. Walls and structures generated thereby are also disclosed.

The utility model discloses an occlusion type expansion sleeve which comprises a cylindrical sleeve body formed by rolling a plate body, the upper portion of the sleeve body is provided with a long-strip-shaped notch penetrating through the top of the sleeve body, and the upper portion of the sleeve body is divided into a plurality of expansion parts through the long-strip-shaped notch. When the sleeve body is unfolded into a plate body, a first meshing tooth part and a second meshing tooth part are arranged on the two sides of the lower portion of the sleeve body respectively. When the plate body is rolled into the sleeve body, the first meshing tooth part and the second meshing tooth part are meshed and clamped; and barbs and stamping grooves are arranged on the sleeve body. By arranging the first meshing tooth part and the second meshing tooth part, the structural strength of the splicing position of the sleeve body can be improved, and the cracking risk of the splicing position of the sleeve body is reduced; by arranging the barbs, the friction force between the sleeve body and the mounting hole can be increased, the sleeve body is prevented from idling, meanwhile, the barbs can prevent the sleeve body from being separated from the mounting hole, and the fixing effect of the sleeve body is improved; and by forming the stamping groove, the structural strength of the expansion part can be improved, and the structural strength of the sleeve body can be improved.

A fastener assembly with workpiece clamping functionality. The fastener assembly, in one example, includes a collet body with a cantilever leg that extends from a crown and includes a foot that mates with a sleeve opening in a collet body sleeve and the collet body sleeve at least partially circumferentially enclosing the collet body. The fastener assembly further includes a workpiece sleeve configured to, in an assembled configuration, mate with the collet body sleeve and prevent rotation of the collet body sleeve and a stud configured to theadingly engage the collet body sleeve or the collet body.

A drywall anchor to be introduced into a gypsum plaster board in a self-drilling manner, and to a method for installing the drywall anchor. The drywall anchor comprises a base body and a drilling element. The drilling element comprises a drilling tip and a cutting element including a cutting bit as well as a hollow, crucible-shaped core bit, which is open toward the front and within which the cutting element is disposed, the cutting element protruding to the front beyond the bit.

There is a self-tapping curtain rod bracket with spaced prongs terminating with tips. The tips and prongs are used to penetrate and create holes in a wall. They extend through the holes and engage the backside of the wall. A wall support extends from the spaced prongs along the frontside of the wall to provide support. An arm extends away from the wall and has a cradle to support a curtain rod. The wall support also has an arm support, and the spaced prongs also includes a mount support. The mount support being located between the arm support and the arm.

A part unit and a vehicle body assembly structure are disclosed. In particular, a part unit and a vehicle body assembly structure with improved workability of assembling parts into a vehicle body of a curved surface are disclosed.

Herein is described a fixing of unitary construction for securing an article to a surface, comprising; a coupling arrangement (104), for coupling the article to the fixing, wherein the fixing comprises barbs (114) which increase the friction between the fixing and the hole; and an elongate member (106) extending from the coupling arrangement; the elongate member comprising a bend (108) which is located substantially midway along the length of the elongate member, the bend defining a first portion (110) and second portion (112) of the elongate member; wherein the first and second portions are resiliently biased away from each other, and the first portion extends between the coupling arrangement and the bend, and the second portion extends towards the coupling arrangement from the bend, forming a gap suitable for the article, between the second portion and the coupling arrangement; wherein the gap size is adjusted by varying the distance between the first and second portions of the elongate member.

The utility model provides an adjustable photovoltaic panel pressing block assembly which is applied to the field of photovoltaic cell panel installation. Comprising a clamping block which is clamped on a corresponding supporting guide rail, and a threaded hole is formed in the center of the top of the clamping block; the pressing block comprises a pressing block main body, a limiting convex edge is arranged on at least one side of the pressing block main body, and a smooth through hole is formed in the center of the pressing block; the locking structure comprises a locking bolt and a spring, the locking bolt is used for fastening the clamping block and the pressing block, the spring is arranged between the clamping block and the pressing block and arranged on the locking bolt in a sleeving mode, and the locking bolt penetrates through the smooth through hole, then is in threaded connection with the threaded hole and extrudes the spring, so that the limiting protruding edge and the supporting guide rail are pressed oppositely. And the photovoltaic panel is further fixedly arranged between the limiting convex edge and the supporting guide rail. The clamping phenomenon of the locking bolt and the pressing block can be prevented, under the limiting effect of the spring, the photovoltaic panel can be conveniently placed between the limiting convex edge and the supporting guide rail, and installation is more convenient.

A fastening device (2) for fixing to a through-hole (4) of a wall element (6) has a plug-in section (10) extending axially between a front end (14) and a rear end (16), a depth stop (18) arranged at the rear end (16) of the plug-in section (10), fasteners (20) held at the front end (14) of the plug-in section (10) which are adjustable between a starting position in which they have a first radial maximum extension (E1) and a mounting position in which they have a second radial maximum extension (E2) that is reduced compared to the first radial maximum extension (E1), and an actuator (34) extending axially over the plug-in section (10) which is adjustable between a mounting position in which the fasteners (20) are moved to the starting position and a plug-in position in which the fasteners (20) are moved to the mounting position.The actuator (34) is adjustable and has a handle (26) for applying a manual actuating force (D) at a mounting end (24) projecting from the depth stop (18). The actuating element (34) is provided to be slidably held relative to the plug-in section (10) between the plug-in position and the fixed position and is pre-tensioned in the fixed position.

The invention discloses a threaded blind rivet for interference connection and a manufacturing method of the threaded blind rivet. The blind rivet comprises a core rod, a rivet sleeve, an interference lining, a rivet body and a driving nut. Wherein the nail body head part is connected with the outer wall surface of the nail body main body part through a first outer rounded corner transition surface, the inner wall surface of the lining head part is connected with the inner wall surface of the lining main body part through an inner rounded corner transition surface, and the outer wall surface of the lining head part is connected with the outer wall surface of the lining main body part through a second outer rounded corner transition surface; in a fastening state, the screw body conical part is attached to the lining conical part, the lining conical part is inserted into the screw sleeve, the first outer fillet transition face is attached to the inner fillet transition face, and the second outer fillet transition face can be attached to an inlet of the mounting hole. According to the invention, the stress at the joint of the nail body head and the nail body main body can be improved, the risk of deformation and fracture of the nail body head is reduced, the mechanical properties such as fatigue of the whole structure are improved, and the fastening degree and the bearing capacity of threaded nail pulling installation are improved.

A fastening system comprising a fastener and a cage and a sealing element. The fastener is enclosed and held by the cage. The sealing element arranged so that using the fastener places the sealing element in a sealing area between the cage and the fastener.

The invention discloses a continuous fiber structural part comprising an embedded connecting piece and a manufacturing method of the continuous fiber structural part, and belongs to the technical field of additive manufacturing. A plurality of embedded parts and locking bolts are arranged in the fiber structural part; through holes are formed in the embedded parts, the outer end faces of the through holes are flush with one end of the fiber structural part, the locking bolts are inserted into the through holes from the inner end faces of the through holes, and one locking bolt is in threaded connection with one embedded part; according to the structure, the connecting piece for additive manufacturing is pre-buried in the continuous fiber additive manufacturing forming printing process, meanwhile, the reverse locking bolt is installed to conduct fiber coating on the connecting piece, the mechanical property of connection between the pre-buried connecting piece and a component is improved, and meanwhile, the mechanical connection mode of a traditional composite material structural piece is replaced.

The present invention relates to the technical field of gas pipeline fixing, and more specifically, to an auxiliary bracket for fixing gas pipelines, comprising a base, a connecting head and a group of clamps, wherein a rubber strip is provided on the inner wall of the clamp, the connecting head is provided on the base, a group of the clamps are symmetrically and movably provided on the connecting head, and a plurality of limit nails are symmetrically provided on the base, and the auxiliary bracket further comprises: an adjustment module, which is provided on the base and connected to the clamp, and is used to adjust the position of the clamp; and a limit module, which is provided on the base, and the adjustment module controls the operation of the limit module when working, and the limit module is used to fix the limit nails on the wall; there is no need for staff to fix the pipeline and the device itself separately, which shortens the installation time of the gas pipeline. Compared with traditional auxiliary brackets, the present invention is more stable and is not prone to separation between the bracket itself and the wall.

The utility model provides a robot seventh shaft which comprises a base and a sliding table, strip-shaped teeth and a pair of sliding block and sliding rail assemblies arranged side by side in a left-right mode are fixed to the top of the base, the sliding table is arranged on the sliding block and sliding rail assemblies in a sliding mode through a multi-section arm, and a gear meshed with the strip-shaped teeth and a driving system driving the gear to rotate are installed on the sliding table. The strip-shaped teeth are located between the pair of sliding block and sliding rail assemblies and parallel to and close to a sliding rail of the sliding block and sliding rail assembly on one side, the outer ends of the multi-section arms are upwards fixed to the bottom of the sliding table, and a top waterproof plate is arranged between the inner ends of the multi-section arms and the bottom of the sliding table and fixedly arranged on the base through a supporting base. A middle water receiving groove and a side water receiving groove are formed in the top and the two sides of the base respectively, the middle water receiving groove is located between the pair of sliding block sliding rail assemblies, and the side water receiving groove is located on the outer sides of the pair of sliding block sliding rail assemblies. The seventh shaft of the robot can effectively protect the track and the strip-shaped teeth and collect working fluid for cyclic utilization.

The invention relates to a composite anchor cartridge (1) comprising (1) a first container (2) with a first interior (3) containing a reactive resin (6) with ethylene unsaturated groups; and (ii) a second container (4) with a second interior (5) containing a particulate hardener (7); wherein the hardener (7) comprises dibenzoyl peroxide phlegmatized with ethylene glycol dibenzoate, and wherein the dibenzoyl peroxide content is less than 50.0 wt.%, preferably at most 49.4 wt.%, based on the total weight of the hardener (7).

A fastener structure includes a rotating fastener body and a main body, the main body and the rotating fastener body are linked with each other by an anti-rotation portion. Through the structural design of the anti-rotation portion, the fastening stability can be greatly improved. Further, each component may also vary the structural configuration. A method of using the fastener structure is also introduced.

An anchor assembly (A) for hollow walls comprises an anchor body (400) and a toggle member (231) that is displaceable between a first position wherein the toggle member (231) is substantially aligned with the anchor body (400) such that the anchor assembly (A) can be inserted in the wall (W) via a cutting distal end (325) of the toggle member (231), and a second position wherein the toggle member (231) extends behind the wall (W) at an angle relative to the anchor body (400) which extends through the wall (W). The toggle member (231) is held captive in the first position but is released and then rotated to the second position by a fastener (218) introduced in the anchor body (400). The fastener (218) threadably engages the toggle member (231) thereby drawing the toggle member (231) against a hidden side of the wall (W).

A fastener for mounting through an aperture of a wall, the aperture having an aperture diameter. The fastener has an inner stud sized to fit through the aperture of the wall, the inner stud having an externally threaded shank, and further having an internally threaded bore. A spiral structure operably connects with the inner stud. An installation tool comprises an elongate body that extends from a proximal end to an externally threaded distal end, wherein the distal end may threadedly engage the internally threaded bore of the inner stud. An outer nut has an inner conduit with an internal thread that may be threadedly engaged with the externally threaded shank of the inner stud. The installation tool further includes a spanner knob threadedly mounted on the elongate body, the spanner knob having a first engagement structure that removably engages a second engagement structure of the outer nut such that the spanner knob may be used to turn the outer nut with respect to the inner stud, and thereby threadedly tighten the outer nut on the inner stud, which functions to compress the spiral structure in a washer-like structure.

The utility model discloses an expansion pipe which comprises an expansion knotting part, a retraction middle part and an expansion head part which are sequentially arranged along the length direction of the expansion pipe, the expansion knotting part comprises an expansion pipe wall and two slender openings which are symmetrically formed in the pipe wall in the length direction of the expansion pipe and penetrate through the pipe wall, and anti-rotation outer teeth are arranged on the side edge, close to one of the slender openings, of the expansion pipe wall; the retraction middle part consists of an expansion pipe wall and a plurality of annular grooves which are distributed on the pipe outer wall at intervals along the length direction of the expansion pipe; the opening head is composed of four opening petals which are evenly distributed in the circumferential direction of the expansion pipe at intervals. According to the expansion pipe, the expansion stress is more uniform, the pipe wall is prevented from rotating during expansion and knotting, and the machining procedure is simple.

A clip is attached such that a leg portion protruding downward from a head portion is inserted into a cylindrical insertion hole of an attachment-target member. The clip has a plurality of engagement protrusions protruding from the leg portion and arranged in an insertion direction. The engagement protrusions have engagement corners sharpened to have a corner radius less than 0.2 mm. At the time of insertion into the insertion hole, the engagement corners slide on an inner circumferential wall surface while the engagement protrusions are elastically deformed. After the insertion, the engagement protrusions are elastically restored to dig into the inner circumferential wall surface, thereby preventing the clip from coming off from the insertion hole.