Abstract: An anchor bolt is provided having a shank which is retained within a recess via peak to peak reaction forces rather than a plurality of peak to base arrangements. This is accomplished through the use of one or more continuous "S" bends or undulations intermediate the shank ends. The "S" bends each create two peaks which extend outwardly from the shank surface with a continuous curve therebetween. That curve includes an inflection point, preferably on the longitudinal axis of the shank, but the slope of the curve at the inflection point is not parallel to that longitudinal axis. Thus, when the shank is inserted within the recess compressive pressure applied to one such peak is directly opposed by such forces applied to the other peak. These peaks can be disposed on opposite sides of the shank or, for example, disposed in a helical or other such pattern about three or more sides of the shank. Serration and/or an abrasive surface can also be provided on the shank to increase retention.

Abstract: A building assembly comprises a wooden board, a metal framing member, and a fastener having an elongate shank, an enlarged head, and a generally pointed end and fastening the board to the framing member. The shank has a ringed portion with annular grooves defining annular rings having a uniform, outer diameter, helical grooves intersecting the annular grooves, a cylindrical land having a smaller diameter and dividing the ringed portion into an axially longer subportion nearer to the tip and an axially shorter subportion nearer the head, a cylindrical land between the tip and the ringed portion, and a cylindrical land between the head and the ringed portion. The fastener is driven through the board and through the framing member wall so that the head bears against the board, so that the tip and the shank form, from the wall of the framing member, a generally annular lip projecting toward the tip and so that the lip is disposed around the cylindrical land dividing the ringed portion.

Abstract: A device for connecting separate material pieces which are disposed in abutting relationship to each other and which includes a thin planar body having side portions adapted to respectively extend into open-ended slots provided on each of the abutting surfaces of the material pieces in which a pocket construction is provided for a stiffening member which is separate and apart from the device body.

Abstract: An electrical connector hold down apparatus is provided for engaging a side wall defining a hole in a printed circuit board to secure the electrical connector to the printed circuit board. The apparatus includes a base, and a plurality of spring beams extending away from the base. Each spring beam includes a body portion and an anchor tip portion. The anchor tip portions include a ramp surface configured to engage the side wall defining the hole in the printed circuit board and to move the spring beams radially inwardly so that the spring beams apply a radially outwardly directed force against the side wall to hold the apparatus within the hole. The anchor tip portions also include a barb formed on a trailing end of the ramp surface. The barbs are configured to penetrate the side wall defining the hole in the printed circuit board to increase a retention force of the hold down apparatus in the hole.

Abstract: A system for linking a first member with a second member. The system is comprised of a first plurality of micromechanical barbs disposed on the first member. The system is also comprised of a second plurality of micromechanical barbs disposed on the second member. The barbs on the first member and the second member are of a shape such that a locking connection is formed between the first member and second member through the first plurality and second plurality of barbs when placed together. Each of the barbs of the first plurality and second plurality of barbs extend from the first member and second member, respectively, to a height no greater than 5 millimeters. The first plurality of barbs and second plurality of barbs oppose each other. The present invention also pertains to a micromechanical barb for linking with an object. The micromechanical barb comprises a base. The micromechanical barb is also comprised of a support which extends from the base.

Abstract: A survey monument has a simple spring clip extraction restricting means formed as a wire form spring member to provide a straight leg inserted in a diametral opening in the rod and a curved co-planar leg which effects a snap fit with the outer periphery of the rod. An axially extending leg is offset radially outwardly and yields to displacement while imparting rotational torque to the rod when the rod is driven into the ground, but opens and restricts extraction when the rod is moved in an opposite direction.

Abstract: A fastener suitable for joining two or more plastic or metal panels together under automated manufacturing conditions. The fastener has a piercing end for forming its own passage through the panels so as to avoid the need for a pre-drilled hole. Disposed near the piercing end are one or more rigid barbs which extend obliquely from the shank toward the head of the fastener. The barbs create an interference with the adjacent panel to secure the panels. The fastener further incorporates an adhesive strip which serves to adhere the fastener to the panels in a manner that prevents both rotation and axial displacement of the fastener relative to the panels. The fastener is particularly adapted for permanently joining two or more panels where access to both sides of the joined panels is either impracticable or undesirable, such as when a body panel of an automobile is to be fastened to the automobile's frame.

Abstract: A connecting element for connecting two parts (1, 2) generally in a connection plane has a first portion (4) for connecting the element (3) relative to a first (1) of the parts and second portion (5) for connecting the element relative to the second part (2). The second portion (5) includes actuation members (6) which on relative movement of the parts (1, 2) substantially along the connection plane urge the parts forcefully towards each other.

Abstract: An electrical device for surface mounting on a circuit board comprises a housing and a plurality of contacts wherein the distance between the region at which the pad-engaging portion of each contact engages its respective pad, and the region of the fulcrum about which the contact deflects, is maximized to reduce the magnitude of the biasing force resulting from the deflection. An improved mounting component for the device comprises a post having tangs that extend from its side which are deflected to allow the post to be inserted into the board opening and which skive into the sides of the opening to prevent the post from retraction therefrom. An improved positioning arrangement for the device comprises a pair of positioning posts having polygonal cross-sections, each having a maximum cross-sectional dimension in single, mutually orthogonal, directions.

Abstract: A fastener comprising an elongate shank having a workpiece engaging end and a driving end. The shank is provided with at least one protrusion characterized by having a leading edge and a trailing edge. The leading edge is oriented in a direction non-parallel to any plane containing the longitudinal axis of the shank. The angle subtended between the leading edge and the longitudinal axis towards the driving end is less than 90 degrees and chosen such that, in use, the fastener may be driven into the workpiece, the angle subtended between the trailing edge and the longitudinal axis towards the driving end being such that the trailing edge resists removal of the fixing member from the workpiece. Preferably the protrusion is welded to the shank.

Abstract: An integral cable fastener having two parallel legs joined on one end by an integral cross member or bridge to form a curved cable engagement surface, the free ends of the legs having end barbs formed by sloping surfaces, and having transverse withdrawal resisting shoulders. Ribs on the concave inner surface of the bridge secure the cable against linear or lateral movement. Transverse drive surfaces on the bridge are axially aligned with the legs and barbs. Insertion depth control shoulders on the legs limit depth of insertion to a predetermined value.

Abstract: An anchor, preferably formed of metal, has at least one flat side and is adapted to be forcefully inserted axially into a complementary shaped aperture formed in an object made of a softer material than the anchor, such as plastic. The anchor is adapted to receive an attachment fastener in a central threaded opening formed in the anchor, after the anchor is forcefully seated in the aperture of the object. A plurality of angled barbs extend outwardly from the body and cut into the object to resist pullout of the anchor once seated in the object, with the flat side resisting rotation of the anchor with respect to the body. The anchor may be formed with flat corner areas which align with rounded corners of the object aperture. In the alternative, generally circular stress relief areas are formed in the corners of the aperture which align with shape square corners of the anchor.

Abstract: A securing device is provided which comprises a fastening element and a tightening member, the device being suitable for fastening furniture panels together. Features are incorporated in the fastening element which improve the quality of the joint which can be achieved between two panels. These include forming helically extending ribs on the leading end of the fastening element which enable it to be pushed into a bore in a member to be fastened, while turning it through a small angle to provide some resistance to axial forces tending to pull the fastening element out. Other features are fins which act to stop the insertion of the fastening element at a predetermined depth and which engage with the second panel to inhibit rotation of the fastening element, the fins being arranged in such a way that they disappear into the second panel allowing the two panels to come into full contact with one another when the joint is secured.

Abstract: The system comprises a pin (30) including a shaft designed to be inserted in a hole so as to pass through a first element, and to be anchored by an anchoring zone in an associated hole in the second element (10), and a head located opposite the anchoring zone and designed to keep the first element mounted to the second element. The pin (30) has, extending over at least one portion of its shaft, a zone of flexion with a reduced moment of inertia in a line perpendicular to the longitudinal axis of the shaft. The dimension of the zone of the reduced moment of inertia extending in the direction of relative motion is smaller in transverse section.

Abstract: A nail structure for providing a support surface for subsequent mounting and positioning of elevational rods for utilization particularly in surveying situations. The nail structure includes a first and second spike member orthogonally mounted to a lower or first leg of a generally triangular support truss head when the head is mounted to a main body support, wherein the main body support provides a planar support surface and includes a projection formed at an upper terminal end of the main body support to provide a planar impact head surface for permitting directing of the nail into various structural components such as utility poles. A further improved embodiment of the instant invention includes a benchmark nail structure, wherein a body member is formed with planar body sides for positioning indicator rods utilized in surveying.

Abstract: A turf anchor stake having a flat shank with a pointed lower end and a headed upper end or two flat shanks connected by a crossbar can be driven through divots into the soil beneath the divots to hold such divots in place until their edge root structure knits with surrounding root structure. To facilitate driving of the stakes the lower ends of the shanks are pointed and lateral projections from the lower end portions of the shanks deter withdrawal of the shanks and lifting of the divots or turf.

Abstract: A one-piece single- or double-shank spring clip, which is used for elastic rail mounting for positively and elastically anchoring a rail relative to a tie plate without using any screws, said tie plate including fastening holes and the spring clip being adapted to be brought into engagement with said fastening holes in the area of its shank, consists of a bent steel rod, which is provided with one or with two spring loop(s) holding down the rail foot. The spring clip has one or two shanks, which are followed by one or two spring loops for holding down the rail foot, the shank being defined by a steel rod member bent by 180.degree. and having, at its lower end in the area of the 180.degree.-bend, one or several projection(s) adapted to engage the tie plate underside, which faces away from the rail, in the area of the fastening hole (FIG. 2).

Abstract: An anchoring device having a head and a shank integral with the head and adapted to be forcibly driven into a hole having a cylindrical wall defined within a body of concrete, masonry, or like material. The shank has a spring temper and has a proximal portion, a distal portion, and a transitional portion joined to the proximal portion at a proximal elbow and to the distal portion at a distal elbow. Each such portion is substantially straight when the shank is unstressed. The shank has a substantially uniform, substantially circular cross-section, except at the elbows, where the shank has smaller cross-sections causing the shank to be preferentially bendable at the elbows. Each of the proximal and distal portions has an axial length equal to at least approximately twice its diameter. The transitional portion has an axial length approximately equal to its diameter. The distal portion facilitates initial entry of the shank into the hole.

Abstract: A fastener for use particularly to temporarily secure wood strip members to a concrete substrate includes an upper cylindrical head overlying a first cylindrical shank, with a truncated conical further head coaxially aligned with the cylindrical head, with a second shank positioned between the further head and an elliptical, deformable anchor portion including a third shank underlying the anchor portion. The anchor portion is deformable to enhance securement of the fastener within the concrete substrate, and wherein further the cylindrical head and the further head define a gap therebetween to enable removal of the fastener by application of a tool to the first shank.

Abstract: A star shaped fastener having at least three fins radiating from a central core with the fin-included angle in a five finned embodiment being between 72 to 98 degrees which configuration reduces the fabricated material by 50% and increases the surface area by 15%-85% compared to a common round nail of equal radius.

Abstract: The fixing of an object such as a thermophonic insulation cushion or blanket to a structure such as as stringer within the fuselage of an aircraft is carried out by means of a one-piece device (10). The latter comprises a support member (12) resting on a circular arc-shaped portion (a3) of the stringer (a), a fixing member (14), which is fitted into a hole (a4) in the stringer and an attachment member (16), such as a serrated pin, on which the cushion is held by a washer (20).

Abstract: A pin for fixing an innermost ceramic fiber layer of a plurality of ceramic fiber layers so as to line a furnace wall to at least one other ceramic fiber layer of the plurality of ceramic fiber layers, situated at a side of the furnace wall with respect to the innermost ceramic fiber layer by being inserted from the innermost ceramic fiber layer into the other ceramic fiber layer.

Abstract: A fastening device comprises an elongated sheet metal plate having at least one lengthwise stiffening rib, a pointed end, the tip of which is preferably inclined to the general plane of the device, and, preferably, a depth stop so that when the pointed end is driven into a wooden member up to the depth stop the other end of the device may be bent and may be secured to another object by fastening means provided in the other end.

Abstract: A star shaped fastener having at least five spaced vertical cups and edges about a central core with the included angle being 90.degree. reducing the fabricated material by 50% and increasing the surface area by 15% compared to a common round nail of equal radius. The holding power is significantly enhanced by compression laterally and vertically into cups, shoulders therein and/or a taper of less than 14.degree..

Abstract: An improved one piece drive fastener having a head and a shank, the shank including a generally non-circular cross-section presenting a plurality of generally flat, axially extending surfaces. Each of the flat surfaces on the shank carry a plurality of axially spaced flexible resilient wing elements; the wings being flexed along the straight line connection with the flat surfaces. Certain wings extending from and positioned in spaced relation along at least one said surfaces being angularly disposed so as to tilt in the direction of said head and further including means formed integrally with each of said certain wings to substantially increase the force required for removal of said fastener from a cooperating aperture as compared to the force required to introduce said fastener into said aperture. Said fastener with its flat surfaces permitting the manufacture of said fastener in a simple two-plate mold design.

Abstract: A bone staple includes a body and a pair of angled arms oppositely threaded into opposite ends of the body. The body has at least one generally flat periphery striking surface and a corresponding relatively sharp outward protrusion at an opposite side of the body from the striking surface. According to the disclosed method, the bone staple is implanted by driving the staple partly into two bone members and then rotating the body to threadably adjust the positions of the arms and thereby exert a force between the bone members. The staple is next driven further by striking the striking surface until the protrusion embeds beneath a bone surface to prevent rotation of the body. A driver tool useful for implanting the staple has a clamping head which receives the staple body and rigidly clamps the angled arms.

Abstract: A fastener is disclosed for affixing void-forming members to underlying concrete slabs for use in composite slab construction. Each fastener comprises a stem having a cross limb with a barbed end for insertion into a foam member, a stabilizer bar transversely projecting from one side of the stem intermediate its ends, and bottom barbs. Upon insertion of the barbs of the cross limb into a foam member and projection of the bottom barbs of the stem into a concrete slab, the foam member is thus secured thereto. Several fasteners spaced around the periphery of the member are employed. The concrete slab with void-forming members installed is then overlaid with a poured concrete cap, thereby forming a unitary composite construction.

Abstract: A staple for installation in a wood support having a U-shaped body defined by a pair of rod-like legs in fixed parallel spaced-apart relationship terminating at one end with the opposite ends of an arcuate member and each leg terminating its respective other end in a chamfered, cut-away point. Each leg is further provided with a notched barb outwardly extending beyond the surface of each leg defining a rounded ramp on its side nearest the point and a step on its other side. A sleeve of insulative material is disposed on the inside of the staple adjacent to the arcuate member.

Abstract: A fixing peg is provided comprising a body and a bearing washer for fixing an insulating panel. The body is tubular, with a support portion and an anchorage portion and is split over the whole of its length. In the anchorage portion two abutment tongues project from the lips of the slit, against which tongues the lips come into abutment during anchorage for increasing the anchorage pressure.

Abstract: The present invention is directed to a method of manufacturing a support fixture for securing thermal insulation, such as glass wool batts and the like, to air conduit ducts forming parts of heating and air conditioning systems. The device comprises a metal pin weldingly connected to a planar sheet metal blank, the rear surface of the blank carrying a double faced adhesive tape, the rear surface of which is adapted to be adhesively connected to a duct. In accordance with the method of making the fixture, an improved adhesive connection is obtained between the sheet metal member and the adhesive tape by applying the tape to the blank while the blank is hot as a result of effecting the welded connection between the blank and the pin.

Abstract: A plug for obturating the lift hole of poured concrete drain pipes or conduits. The plug, preferably made of a plastic molding, comprises a generally thin head in the form of a plate and a shank projecting from the lower surface of the plate. The shank has at least two substantially thin fins extending radially from a common centerline, each having a lateral edge engageable with the rim of the hole obturated by the plug. Preferably, the shank is cruciform and is provided with three or more fins.