Abstract: A twist-lock anchoring fastener comprises a head (700), a shaft (715), and a lance (720). The foot is adapted to penetrate through wallboard (105). The shaft length is approximately equal to the thickness of the wallboard so that when the foot lies on the back side (107) of the wallboard and the shaft is rotated, the foot is captured behind the wallboard, completing installation of the fastener. An optional footer (725) for the head contains raised lines (726) or bumps (727) or both to aid in seating the fastener on the wall. An optional wall plate assembly (1700) further strengthens the installation of the fastener by locally reducing pressure within the wallboard. In an alternative embodiment, the fastener comprises a wall anchor that accepts a pin (3200). In another alternative embodiment, the fastener is designed for installation in our prior-art wall anchor (100).

Abstract: An exemplary securing structure includes a base, a fastener, and a spring mounted around the fastener. The base defines a through hole, and two slots located adjacent to and communicating with the securing hole. Two barriers are formed at a bottom of the base corresponding to the slots. A gap is defined between the bottom surface and each of the barriers. The fastener includes a head, a bolt, and two blocks extending outwardly from a periphery of the bolt corresponding to the slots, respectively. When the bolt is extended through the securing hole with the blocks extending through the slots until the blocks are received in the gaps, the fastener is then rotatable to cause the block to escape from the gap and abut on the bottom surface of the base, with the spring resiliently compressed between the head of the fastener and a top side of the base.

Abstract: An anchoring fastener comprises, in one embodiment, a shaft (100) with straight and tapered portions, a tip (105) at the front end, cam follower surfaces (110, 111) at the rear end, a body (120) with a bore, a head (125) with a hole collinear with the bore in the body, and a pair of fins (115). The shaft and the body are joined at a bendable region by the fins. The anchor is fully inserted into wallboard (600) until the head comes into contact with the outer surface of the wallboard (610). The length of the body is approximately equal to the thickness of the wall. The fins slice into the wallboard, thereby preventing rotation of the anchor during and after insertion. An activating member (900), such as a screw or a pin, is inserted into the hole and bore and urged against the cam follower surfaces, thereby forcing the shaft to rotate until it comes into contact with the inner surface (615) of the wallboard.

Abstract: A mounting system, comprising an insertion component configured to be partially inserted into but not through a hole in a first panel of a wall assembly with an elongated anchor having a hub and at least one anchor tab. An elastic holding member is configured to connect the insertion component and the anchor and the anchor located on a first side of a first panel is configured to be inserted through the insertion component opening defining the hole in the first panel. The holding member pulls the insertion component and the anchor toward each other when the insertion component and the anchor are located on opposite sides of the first panel and separated by approximately a first panel thickness.

Abstract: A connecting member includes a housing, a moving element slidably disposed within the housing and having an exposed portion exposed to the outer environment via the housing, an elastic element disposed between the movable element and an inner surface of the housing and biasing the movable element to position the movable element in a first position, at least one stopper disposed on the exposed portion and having an angle with respect to the housing, and a casing disposed on the housing. When the movable element is moved to a second position, the stopper deforms elastically and is received in the casing. When the casing and the housing pass through the connecting holes, the movable element is released and moved to the first position and the stopper escapes from the casing and abuts the soft substrate, whereby the device and the soft substrate are held between the stopper and the housing.

Abstract: An anchor system for a hollow wall or ceiling includes an anchor portion having a flange and a penetrating portion extending from a rear surface of the flange. The penetration portion has a fixed sleeve extending from the rear surface of the flange and a pivoting locking leg connected to the fixed sleeve by a hinge. The fixed sleeve has a non-round opening extending longitudinally therethrough and the pivoting locking leg has a stub extending from a rear surface thereof to retain the penetrating portion rigid as the anchor is inserted into the wall or ceiling. A pin portion has a body including a flexible shaft and an actuating element extending transversely from an end of the shaft. The shaft tapers, near the actuating element toward the actuating element to define a transverse dimension. The actuating element has a heel at about a rear surface thereof.

Abstract: A mounting mechanism is provided for securing an article to a wall. The mounting mechanism can include an insertion member, a base member, and a tab member. The insertion member has at least one hub formed thereon. The base member has a flange and at least one arm depending from the flange. The flange defines an insertion hole, and the at least one arm includes a guide. When the insertion member is provided in the insertion hole, the guide receives the at least one hub. The guide directs movement of the insertion member relative to the base member. The insertion member and the base member include a ratchet mechanism for maintaining the position of the insertion member relative to the base member. The ratchet mechanism can include a pawl formed on the at least one hub and at least one indentation provided on the guide. The pawl can interact with the at least one indentation. The tab member can be removably coupled to the insertion member.

Abstract: A self-drilling anchor is provided which includes an elongated tapered plastic body and anchor assembly. The body has an external helical threaded portion, a central clear bore for receiving the anchoring assembly, two diametrically opposed break-away slotted portions, and an axial driving flange concentrically positioned relative to the tapered body first end. The flange has inner and outer walls, a central clear aperture for receiving a screw driver, and at least two diametrically opposed notches for receiving a bladed driver for drilling the tapered body into a hollow wall. The anchoring assembly is centrally received in the clear bore, and includes an externally threaded screw, a collar, and at least two diametrically opposed separable arms. The collar is internally threaded for receiving the screw. The separable arms have spring loaded ends and pointed ends. The spring loaded ends are pivotally attached to the collar.

Abstract: A fastening device (21) for mounting on a mounting rail (11) having a rear-engagement member (22) which is configured to be introduced into the mounting opening (15) and to engage behind the rims (14) of the mounting opening (15) of the mounting rail (11); including a tensioning device (32) which cooperates with the rear-engagement member (22) and has a longitudinal axis, for clamping the fastening device (21) to the mounting rail (11); including a contact plate (42) for resting on the outside of the mounting rail (11) that has a feed-through opening for a part of the tensioning device (32); and a spring element (52) configured between the contact plate (42) and the rear-engagement member (22) for preloading the rear-engagement member (22) circumferentially with respect to the longitudinal axis (34) of the tensioning device (32); including a holding device (62) between the rear-engagement member (22) and the contact plate (42) for holding the rear-engagement member (22) in the preloaded position; upon release

Abstract: The instant invention relates to a novel powerful wall hanger for supporting different objects. Particularly, the invention concerns a hanger that is used in gypsum board and similar walls and that's provides a stable and safe holder of variable weights.

Abstract: A cover and method for covering openings an particularly openings initially intended to cover door knob openings and lock set openings of a modified door which are required to be covered for aesthetic and security reasons. In one embodiment, the cover for a door knob hole is an integral stack of disks wherein the largest outermost disk covers the opening when centered by the second disk that fits snugly inside the opening. A bridge fits inside the lock-set cavity to which a cover over the lock cavity is bolted.

Abstract: A flat nut is provided with a threadlike retainer cord and structure for self-drilling and slotting a wall to provide a suitable hole for insertion of the nut, and a screw to be threaded into the nut. The retainer cord provides for positioning the nut on the back side of the wall. The nut has an elongated drilling point for making a hole and serrated teeth along an elongated side for making horizontal slots on each side of the hole to accommodate the full width of the nut. The arrangement provides a simple way to fasten objects onto a wall without access to both sides.

Abstract: A toggle pin comprising an elongate main body portion having two ends, one end being provided with a passageway that extends at least partially through the main body portion and which is open at the one end such that a line member can pass into the passageway and be connected to the toggle pin, the other end being provided with a toggle plate, the toggle plate being pivoted to the main body portion in such a manner that the toggle plate can move between an unlocking position where the toggle plate is substantially in line with the main body portion, and a locking position where the toggle plate is substantially at right angles to the main body portion.

Abstract: An anchoring device includes an insertion member having a trough-shaped trunk and a pocket provided at the front end of the trunk. A plate nut is inserted in the pocket and formed with a threaded hole at its portion protruding from the pocket. A seat member is fitted around the trunk. An engaging rib is formed on the inner surface of the seat member. A plurality of steps are formed on the outer surface of the trunk and arranged in the longitudinal direction of the trunk. When the seat member is moved toward the front end of the trunk, the engaging rib engages the respective steps one after another, thereby preventing the seat member from moving toward the rear end of the trunk. Any step nearer to the rear end of the trunk is smaller than any step nearer to the front end of the trunk.

Abstract: A floor mat clip assembly adapted to attach a floor mat to the interior carpet of a vehicle is disclosed. The clip assembly includes a floor clip attached to the carpet and a mat clip attached to the floor mat. The floor clip includes a base member and a top member having a locking member rotatably attached thereto. The base and top member of the floor clip are adapted to cut through the carpet and interlock to sandwich the carpet therebetween. The mat clip includes a top member and a base member, each having an aperture and adapted to interlock to sandwich the mat therebetween. The mat can then be positioned to insert the locking member of the floor clip through the aperture of the mat clip. A subsequent rotation of the locking member locks together the respective clips to secure the floor mat to the interior carpet.

Abstract: A hitch system includes a handle portion including a handle loop, a pin portion extending from the handle portion, a pair of opposite retainers and a trigger. The retainers are movable between a retracted position relative to the pin portion and an extended position relative to the pin portion. The trigger is coupled to the retainers to actuate the retainers between the retracted position and the extended position.

Abstract: A retrievable toggle bolt for mounting an object on a drywall or other hollow wall structure includes a headless bolt having a threaded shaft with a terminal portion for insertion through a hole in the drywall. A toggle is engaged by a pivot-and-slide engagement configuration with the terminal portion of the headless bolt so that the toggle is free to pivot relative to the headless bolt about a pivot axis substantially perpendicular to the direction of elongation and the pivot axis is slidingly displaceable along part of the toggle roughly parallel to the length. The pivot-and-slide engagement configuration links the toggle to as to rotate together with the headless bolt about an axis parallel to the direction of extension. The result is a toggle bolt which can be switched between an insertion/removal state and a locked state by simply turning the headless bolt through a half-turn about its axis.

Abstract: An anchor assembly for hollow walls comprises an anchor body and a toggle member moveably mounted to the anchor body. The toggle member is displaceable between first and second positions thereof, wherein in the first position the toggle member is substantially aligned with the anchor body such that the anchor assembly can be rotated for insertion in the wall, and wherein in the second position the toggle member extends behind the wall at an angle relative to the anchor body with the anchor body extending through the hole in the wall. The toggle member is held captive in the first position but is displaceable longitudinally along the anchor body when an appropriate fastener is introduced in the anchor body. A deflector is provided for causing, after a sufficient longitudinal displacement of the toggle member has released the same from a captive state thereof, the toggle member to pivot relative to the anchor body to the second position.

Abstract: An anchor assembly for walls comprises a toggle member and a strap member pivotally mounted together, and a locking member. In a first position thereof, the toggle member is aligned with the strap member for insertion through the wall, whereas in a second position thereof, the toggle member extends behind the wall at an angle relative to the strap member which extends from the toggle member through the hole in the wall. The locking member is adapted to be displaced along the strap member until it engages the wall and to be locked on the strap member to prevent the locking member from displacing away from the toggle member. Therefore, the locking member and the toggle member are connected by the strap member and imprison the wall by abutting respectively the visible and hidden sides thereof. A fastener introduced through the locking member and the wall threadably engages an opening defined in the toggle member.

Abstract: The self-drilling and slotting fastener with retainer has a thin retainer wire that is used to bring the flat nut portion that is inserted through a wall into position with the hole in the wall for a screw to mate with the threads in the nut. The nut has a rectangular body shape with a thin elongated section extending from away from one side. This elongated section has a drilling point and serrated teeth for making a slot. It looks almost like a car key. The drilling point makes a hole wide enough for the matting screw and is long enough to go completely through the wall. The serrated teeth on the elongated section are used to make horizontal slots on each side of the hole to accommodate the narrow width of the nut body. The resulting slotted hole is clean and provides a smooth and uniform surface on the inner surface of the wall for the nut to rest against. The drilling & sawing section is crimped at the juncture with the body and has a hole in it for being put on the retaining wire.

Abstract: A restraint clip for suspending a load-bearing object includes an engaging member having a body defining an engaging member hole, two abutting surfaces, and two non-abutting surfaces; a lock having a lock body with a base defining a lock hole spatially aligned with the engaging member hole, wherein the lock coacts with the engaging member; a fastener extending along a longitudinal axis threadably engaged with the engaging member hole engaged with the lock hole and threadably engaged with a threaded stop hole, whereby the engaging member is adapted to move along the longitudinal axis relative to the fastener when the fastener is rotated about a longitudinal axis.

Abstract: A fastener apparatus is disclosed that features projecting locking members that extend and retract when a central drive shaft is rotated. The exterior of the connector has a body that is partially threaded to receive a nut so that two structures (eg. flanges, panels, plates, beams, etc.) can be pulled together by tightening the bolt when the locking members are in the extended position. In one embodiment, the shaft can be an eyebolt.

Abstract: A toggle bolt type connector has projecting locking members that extend and retract when a central drive shaft is rotated. The exterior of the connector has a body that is partially threaded to receive a nut so that two structures (eg. flanges, panels, plates, beams, etc.) can be pulled together by tightening the bolt when the locking members are in the extended position.

Abstract: A clip includes a grommet, a pin, and a thin connection portion integrally connecting the grommet and the pin. The grommet includes a pair of expandable leg pieces and has a V-shape. The pin can relatively move inside the grommet. A through hole for guiding a top portion of the pin is defined at a tip of the V-shape of the grommet. The thin connection portion is located between an edge of the top portion of the pin and an edge of the through hole. The thin connection is cut when the pin is pushed into the inside of the grommet.

Abstract: This invention relates to a fastener, which expands by the insertion of an expanding member, preferably a screw. The fastener comprises a substantially flat head and two expandable legs. The head has an upper side and a lower side, preferably separated by a gap. The head has also a hole on the upper side in which the screw engages. Further, the screw engages in other locations of a critical portion of the rest of the body of the fastener, thereby increasing considerably the prevailing torque required to render the screw loose, the pulling force required to break the fastener or otherwise pull the screw out of the engageable hole of the upper side of the head, as well as the stripping torque.

Abstract: A shear resistant fastener assembly for supporting structures from a wall behind which there are no supporting framework, the wall defining therethrough an opening having a predetermined size and configuration and bordered by an interior peripheral surface having the thickness of the wall, the fastener assembly comprising an anchor plate having a predetermined length and a predetermined width and adapted to be inserted through the opening in the wall and to be positioned flatly against the rear surface of the wall, and an insert having a predetermined size and having a configuration the same as that of the wall opening and adapted to fit closely within the opening and against the interior peripheral surface of the opening, and including an arrangement for connecting together the anchor plate and the insert. The shear resistant fastener assembly also is adapted to secure together overlapping panels behind which there are no structural supporting members.

Abstract: A toggle bolt fastener assembly comprises a tubular toggle housing body within which a coaxially disposed nut member is guidably moved in a translational manner. The nut member includes lug structure for preventing relative rotation or pivotal movement of the nut member with respect to the toggle housing body, and a pair of toggle wing members are pivotally mounted upon the nut member between radially contracted and radially expanded positions. A pair of compression sleeve members are also provided upon the toggle housing body for forcing the toggle wing members to their radially contracted positions, or for permitting the toggle wing members to move to their radially expanded positions depending upon the disposition of the nut member within the toggle housing body.

Abstract: An anchor device is provided which makes it possible to fasten various members or instruments to a wall to the back of which hands cannot reach with a bolt. The anchor device includes an inserting member molded of a synthetic resin, a nut mounted to the tip of the inserting member, and a tubular seating member mounted on the inserting member. The inserting member has a bag-like portion integrally formed at the tip of an elongated trough-like trunk portion having a semicircular section through a bendable portion. The nut, which has a semicircular section, is received in the bag-like portion. By inserting the anchor device into a hole formed in a wall member, it fixes an article to be fastened by use of a bolt.

Abstract: A locking device and method for securing a cover as for a catch basin or manhole in position including two elongate members pivotally connected together end to end so as to be able to articulate. The members are held aligned while being inserted through a cover opening suspended in said opening on a flange on the upper member, the lower member then released to be angled by a spring force to wedge against sidewall and an edge of the cover opening. A bolt extending through the top threaded into a trunnion extending across an intermediate space of the lower member draws the lower member up to create a powerful wedging action to prevent cover removal. The bolt head is recessed into the flange and configured with a special shape engageable only with a special tool to be tamper resistant. A protective plastic cap covers the bolt head and has protrusions sheared off when the cap is removed to provide a tamper indication.

Abstract: A method of joining a first sheet-metal member to a second sheet-metal member in a right-angle relationship using an H-shaped interlocking member. An opening is provided near an edge of the second sheet metal member with a channel communicating the opening and the edge. The opening is sufficiently wide to allow the H-shaped member to be rotated therein so as to allow the upper and lower slots of the H-shaped member to engage with the second sheet-metal member. A tapped hole is provided in the center section of the H-shaped member, aligned with the channel, so as to allow a screw to be inserted through a hole on the first sheet-metal member and then the channel to engage with the tapped hole. After the screw is tightened, the surface of the first sheet metal member is securely joined to the edge of the second sheet metal member.

Abstract: A fastener comprises a shank 10 for extending through an opening 60 from a near side 56 to a far side 58 of a wall and a catch 20 retained In the shank of the fastener, in which the catch has first and second orientations in which, respectively, it projects less and more beyond the profile of the shank, whereby the catch can pass through the opening in the first orientation but the catch engages the far side of the wall and prevents withdrawal of the shank from the opening in the second orientation, the catch being supported by a shoulder 42 when the shank is tensioned by a nut 50. Swivelling of the catch is controlled by rotation of the shank.

Abstract: A rivet-type fastener is disclosed, suitable for panel fasteners and other applications in which retention in a hole is required. The act of inserting the fastener expands fastener arms to secure the fastener in the hole, and positions locking protrusions of a post within notches of the arms, to lock the fastener within the hole. In some embodiments the fastener can be released, for removal and re-use.

Abstract: An obturator (1) for an opening has a collar (2) having a peripheral lip (3) adapted to come into abutment on a face of the opening. The obturator also has teeth (6) pivotally mounted on the collar (2) and a central portion forming a pusher (8) adapted to pivotally move the teeth (6) between an unlocked position and a locked position of the obturator (1), so that the teeth (6) come into an abutment on an opposite face of the opening in the locked position of the obturator (1).

Abstract: A holding fastener 1 comprising a shank 3 adapted to be inserted into a mounting hole of an attachment member. The holding fastener having a first holding portion 5 disposed at one end of the shank and adapted to extend radially and outward from the mounting hole of the attachment member to engage and hold one surface of the attachment member, and a second holding portion 6 disposed at the other end of the shank and adapted to engage and hold the other surface of the attachment member. The second holding portion 6 includes a holding piece 9 connected to the shank 3 through a hinge 7 to allow the holding piece to be pivoted or rotated between an insertion position extending along the axis of the shank and a holding position extending orthogonal to the axis of the shank. An insertion tube 15 is provided at the one end of the shank. The insertion tube 15 is adapted to be inserted axially into a hollow portion of the shank from the side of the first holding portion to the side of the second holding portion.

Abstract: A nut assembly is proposed for fastening an instrument or the like to a member, the back of which is not accessible. A nut assembly comprises a pivotable nut having a threaded through-hole and a pin on each side thereof, and a frame having a flange portion formed with a bolt hole and an opposed pair of arms extending from both sides of the flange portion. The arms are each formed with an elongated hole, and the nut is formed at one end thereof with an inclined guide surface for pivoting the nut when pushed by a bolt. The nut is pivotably and slidably mounted between the arms with the pins received in the elongated holes formed in the arms. The arms have free end portions bent inwardly at an angle. With this arrangement, it is possible to prevent the nut from coming off the arms.

Abstract: This invention relates to a fastener, which expands by the insertion of an expanding member, preferably a screw. The fastener comprises a substantially flat head and two expandable legs. The head has an upper side and a lower side, preferably separated by a gap. The head has also a hole on the upper side in which the screw engages. Further, the screw engages in other locations of a critical portion of the rest of the body of the fastener, thereby increasing considerably the prevailing torque required to render the screw loose, the pulling force required to break the fastener or otherwise pull the screw out of the engageable hole of the upper side of the head, as well as the stripping torque.

Abstract: A clip is used to hold two or more sheet-like materials, for example, an automobile panel and a trim, together. The clip comprises a grommet having a V-shaped leg portion, a pin movable in the axial direction in a space between the V-shaped leg, and a pair of hinges coupling the pin with the V-shaped leg portion of the grommet. The V-shaped leg has a pair of leg pieces and a bottom connecting the leg pieces. The hinges are curved in the free state, and extend in planes perpendicular to the plane defined by the longitudinal axes of the leg pieces of the V-shaped leg.

Abstract: An access cover assembly for use in removably covering an access opening of a utility pole, the access opening defined in part by opposing side edges. The cover assembly includes a cover having peripheral edges configured to engage the pole, a threaded fastener and a gripping apparatus. Two interlocking portions make up the gripping apparatus, a first portion is configured to engage a second portion with at least one of the side edges of the pole sandwiched therebetween. At least one of the first interlocking portion and the second interlocking portion have locking formations for creating the interlocking relationship. Each of the cover and both portions of the gripping apparatus have a throughbore for accommodating the fastener, so that upon assembly of the gripping apparatus in the access opening, as the fastener is rotated axially, the cover is pulled toward the apparatus and simultaneously tightened against the pole, and the first and second interlocking portions are drawn more tightly together.

Abstract: The present invention is a wall anchor having a novel finger configuration. This wall anchor has a head and barrel portion with a bore extending therethrough and laterally expandable fingers in general alignment with the bore. Instead of a straight channel, a channel having curved portions separates the fingers. The curved portions of the channel define ramp surfaces that at least partially extend into the path of a securing member created by the bore. Thus, when a securing member, such as a bolt, pin, screw, nail or similar object is inserted into the bore to secure the wall anchor to the wall, the securing member contacts the two ramp surfaces, separating the fingers. As the fingers separate, a portion of the fingers near the ramp surfaces deform such that the ramp surfaces rest on an outer portion of the securing member, thus providing a securing force for connecting the wall anchor to the wall and relieving stress on the area at which the fingers are connected to the barrel.

Abstract: A self drilling toggle anchor including an anchor member having a head portion at a proximal end, a locking portion at a distal end and a central portion for securely anchoring hardware to a wall, where the central portion defines and borders a channel between the head portion and locking portion. The toggle anchor also includes a drilling member positioned at a distal end of the toggle anchor for drilling through the wall and a toggle member. The toggle member includes a body disposed within the channel of the anchor member, a fitting portion disposed between the body and the drilling member, and upper and lower pairs of shoulders supporting the body within the channel. The body is slidably mounted to the anchor member within the channel and the fitting portion is adapted to releasably engage the locking portion allowing the toggle member to be movable from a releasably locked and fixed first position parallel with a longitudinal axis of the channel to a second position orthogonal to the channel.

Abstract: A quick mounting nut (2) movable, at least partially, without being rotated, axially to a threaded bolt (1), with a springing wire clip (4) being located in a nut housing (5) with a continuous coaxial opening (6), with the wire clip (4) at least partially engaging in a bolt thread (3) and having two legs (8, 8′) which spring relative to one another, with the opening (6) having an inner cone (7) which narrows radially from an axial neutral position of the wire clip (4) and with the wire clip (4) being movable axially to a limited extent and contacting at least partially inside the inner cone (7) in its locking position.

Abstract: A nut assembly is provided which has a pivotable nut having both sides thereof increased in wall thickness to impart strength and thereby to prevent breakage of the nut upon tightening of a bolt. The nut assembly includes a nut having pivot pins about which the nut is pivotable, and a frame having a flange formed with a bolt hole and a pair of arms provided on both sides of the flange. A pair of hanging walls extending in the bolt inserting direction are provided around the bolt hole at two opposing positions on an imaginary plane perpendicular to a line connecting the pins. This makes it possible to narrow the width of the guide hole of the nut in which the hanging walls are received by an amount by which the banging walls have narrowed. By this arrangement, the wall thickness of both sides of the nut is increased.

Abstract: The expansion rivet consists of an expansion peg and a drive-in pin, which in the preassembled state of the expansion rivet are captively joined together. In its midsection, the expansion peg has an insertion hole adapted to the form of the drive-in pin, two lateral engagement wings projecting in opposite directions and two opposing spreader legs projecting downward at right angles. The preassembled drive-in pin protrudes slightly out of the expansion peg but is in engagement with the two spreader legs. When the drive-in pin is driven into the expansion peg, the spreader legs are forced apart by the drive-in pin to form a riveted connection.

Abstract: A hammer-in expansion fastener for embedding into a wall and receiving a screw having an elongated body which is provided with two opposite ends and a bore extending into it from one end to receive a screw. The other end of the body is tapered inwardly to a leading end of the body to an extent allowing the wall plug to be driven into a wall of building material. The other end is further provided with a non-uniform taper of: (a) between 12° to 18° to the longitudinal axis of the body at the leading end and about 10 mm in length measured along the longitudinal axis; and (b) from 4° to 8° to the longitudinal axis of the body at a portion remote from the leading end.

Abstract: A hole plug and method of installing the hole plug to seal and repair a hole in a wall of a pipeline, tank or other physical structure is provided. The hole plug has a bolt with a bolt head and a threaded shank, where two or more adjacent notched washers, one or more sealing washers and an exterior washer are secured about the threaded shank and between the bolt head and a threaded nut. The present invention includes an internal sealing washer and/or an external sealing washer. The sealing washers and the exterior washer are selected to provide a surface area larger than the hole. The hole is prepared by establishing a solid, clean edge. The bolt head, a length of the threaded shank, the notched washers and an optional internal sealing washer, are passed from the exterior side of the wall and through the hole. Insertion of the notched washers is accomplished by tipping the washers at an angle to the wall and rotating the washer through the hole.

Abstract: A fastening anchor assembly and manual method for fastening an object to a hollow wall. In most embodiments a generally U-shaped mounting strap of the assembly has a central bight and parallel first and second legs extending longitudinally from the bight through a first mounting hole in the wall. A strap foot portion or separate mounting flange extends perpendicularly to the legs for engaging the wall exterior side surface. One or two anchoring blades are operably pivotally coupled to the strap for swinging motion in a single plane defined by the longitudinal axes of the blades and strap and between a collapsed position nested adjacent the strap and a swung-out expanded position wherein the blade(s) clamp-engage the wall interior surface while the leg feet or flange clamp-engages the wall exterior surface. The position and orientation of the now wall-hidden blade remains visibly indicated to the installer by the orientation of the strap exposed to view of the installer.

Abstract: A simplified, high-strength fastening device for securing fixtures, other objects, structural components, or members for use in “blind hole,” inaccessible applications, particularly overhead or ceiling installations or wall portions having at least one concealed side. The fastening device can be installed easily, can be removed easily and used repeatedly, and can present a maximum bearing surface for engagement with the securing member for distributing an attached load evenly and uniformly upon said member. The fastening device has two parts: (1) a specially shaped nut comprising the actual fastener, and (2) a plate attached hingedly to the nut that provides the means for inserting the nut through a blind hole and for urging it into operational position. The nut has a threaded bore located approximately at its center to receive a fastening commercially produced bolt of appropriate size and kind.

Abstract: A wall anchor assembly has a pair of posts extending from a collar. The collar has an opening for passing a part of a bolt. Distal from the collar, the posts are connected by a connector. An anchor member is captive between the posts and between the collar and the connector. The assembly has a penetrating configuration in which the anchor axis is substantially parallel to the assembly axis, and the anchor body portion and posts form a body portion. A tongue protrudes from an inside surface of a post and engages a groove on the anchor member in the penetrating configuration with the longitudinal anchor axis substantially parallel to the assembly axis, and transmits axial rotation from the collar to the anchor member. The bolt engages a hole in the anchor to draw the anchor member against the wall to clamp the anchor assembly to the wall.

Abstract: An anchor makes it possible to easily fasten an object to a brittle wall. The anchor has a plate member formed with a hole for receiving a screw, a pair of legs extending from the bottom of the plate member at both sides of the screw hole, and a slide grip member slidably mounted on the legs. With a wall sandwiched between the plate member and the slide grip member, both members are prevented from turning. Thus, it is possible to fasten an object to the wall simply by threading a screw into the hole of the plate member.

Abstract: An improved fixed positionable toggle bolt device for fastening objects to a substrate comprising a metal anchor member having a nut portion and a selectively frangible positioning and holding assembly engaged with the metal member. The assembly comprises two elongated control legs, with the first ends of the control legs being pivotally attached to the metal member. The second ends of the control legs are movably attached to each other by an elongated undercut element interference, with movement of one leg relative to the other, effected by finger tip sliding, causing the metal anchor member to pivot from substantially in line with an insertion aperture in the substrate, to a position parallel to the substrate when the second ends of the control legs are aligned with each other. A positioning collar is engaged with both legs, holding them in place and is movable along the respective lengths of the legs.