Abstract: A screw includes a shank and a head. The head includes a driving socket having a long slot that extends axially into the head to a depth. A first short recess is defined in a bottom wall defining the long slot and extended along a longitudinal axis of the long slot, the first short recess being narrower yet deeper than the long slot. A second short recess extends along an axis that is normal to the longitudinal axis of the long slot. The second short recess is as deep as the first short recess, the short recesses together defining a cross-shape recess for receiving a Phillips type screw driver, the cross-shape recess including four ends. The driving socket of the head further includes a square recess that is located within an area defined by the four ends of the short recesses, the square recess being adapted to receive a square socket type driver. The square recess extends axially into the head to a depth deeper than the short recesses.

Abstract: A rack and pinion steering gear (10) comprises a rack (14) and a housing (12) for receiving the rack. The housing (12) has a chamber (42) for receiving a rack supporting yoke (70). The chamber (42) has a threaded portion (44) with internal threads (45). A rack supporting yoke (70) is disposed in the chamber (42) and supports the rack (14) for movement in the housing (12). An externally threaded yoke plug (90) is screwed into the internal threads (45) of the threaded portion (44). An externally threaded lock nut (120) is screwed into the internal threads (45) of the threaded portion (44) and into abutting engagement with the yoke plug (90) to lock the yoke plug in the housing (12).

Abstract: A novel cable anchor for retainment and attachment of cables and tubing which utilizes a one-piece A-shaped rigid body (11) comprising of a U-shaped top (12) having the front, back and bottom open having two extensions one W-shaped left side extension (13) and one W-shaped right side extension (14) both extensions extending in a downward direction having 40 degrees more or less between the extensions. The W-shaped extensions having a barb surface located at the extreme outer surfaces of the W-shape. The U-shaped top (12) having an attachment hole (15) located at the top center. When manual pressure is applied on the outer surfaces of the extensions causing the extensions to move closer towards each other until the extensions are touching each other in the closed position thereby allowing the A-shaped rigid body (11) to be received in a bored hole of a substructure. The U-shaped top (12) may be flattened to facilitate the attachment of a separate cable clip or the like.

Abstract: A high-torque fastener having a threaded shaft and a star-shaped head is disclosed. The high-torque fastener is made of a resorbable or other non-magnetic material. A mating driver snugly fits around the star-shaped head of the fastener, to thereby apply torque to the perimeter of the star-shaped head. The driver can be made disposable, and the driver and fastener packaged together in a single, disposable, assembly. Additionally, the driver can be color coded to indicate the size of the fastener which is pre-attached to the driver in the packaging.

Abstract: A mechanical clamp used to secure hoses includes an elongated band. The band surrounds a central region and has a sequence of slots along its length. An adjustment screw has a hexagonal head that rotates about a longitudinal axis and has a thread that extends into the slots. Rotation of the screw adjusts the area of the central region. The head of the screw allows a driver to transfer torque to the head of the screw at an angle from the axis of rotation. The head is either curved or angled to allow a driver to efficiently engage the head of the screw during rotation when placed at an angle to the axis of rotation.

Abstract: In a modular system (10), with a holder part (12) for clamping in a spindle of a turning machine and a machining tool (14) attached interchangeably to this, the machining tool (14) has a hollow cylindrical shaft part (18) which overlaps a receiving mandrel (20) on the holder part (12) and is fixed to the holder part (12) by means of a screw device (28, 30) mounted on the holder part (12) and generating a tension or compression force via a tension or compression rod (22) running through the holder part (12) and the receiving mandrel (20). The end of the tension or compression rod (22) facing the machining tool (14) is expanded and under the effect of the tension or compression force leads to an expansion of the receiving mandrel (20) such that the peripheral surface (42) of the receiving mandrel (20) and the inner surface (44) of the shaft part (18) are clamped against each other to form a friction connection.

Abstract: A security fastener including a body having a circumferential periphery and an end wall, a curvilinear groove in the end wall, a plurality of circumferentially spaced depressions extending inwardly into said circumferential periphery from said end wall and having a bottom wall and first and second side walls, junctions having radii between the bottom wall and the side walls. One of the side walls extends at a greater angle to the axis of the fastener than the other side wall, which is engaged by the driving tool. A driving tool for driving both the foregoing security fastener and a conventional hexagonal fastener including a body having a bore with a plurality of axially extending splines for selectively engaging either the above-mentioned side wall of the depression of the security fastener or a plurality of sides of the hexagonal fastener.

Abstract: A multi-tier security fastener in the nature of a nut or bolt having a body with a first tier having a lobed drive surface, and second and third cylindrical tiers on opposite sides of the first tier, with all three tiers having different effective diameters. The second and third cylindrical tiers can have irregularities in the nature of a lobe or a depression.

Abstract: 216-type screws and KS-type screws are two types of fastening devices typically used to restrict access to the chambers of building entrance protector (BEP) enclosures used in telecommunications applications. Access to such chambers is limited to those users who have special tools designed for one or the other type of screw. The present invention is a screw that can be actuated using either the special tools designed for 216-type screws or the special tools designed for KS-type screws. In particular, screws of the present invention have a hexagon-shaped outer surface like a 216-type screw and a hexagon shaped recess with a cylindrical upstanding post in the middle of the recess like a KS-type screw.

Abstract: A door hinge assembly is provided which includes a mounting body with a pocket for receiving an edge of a door, a clamping mechanism positioned on and securing the mounting body to the door, a pin projecting upwards from the mounting body and a bushing for receiving the pin. The bushing is mounted in a recess of a door frame and preferably includes a series of fluted ribs along its outer wall. An annular ring projects inwardly from an inner wall of the bushing. A channel on the pin receives the annular ring and retains same within the bushing.

Abstract: A sealing ring for an electric watthour meter apparatus has first and second housings mounted on opposed ends of an annular band. A fastener extends through a threaded aperture in an end wall of one housing into threaded engagement with an aperture in an end wall of the opposed housing to fixedly engage the ends of the sealing ring. A plurality of radially intersecting slots in one end of the fastener are alignable with apertures in one of a plurality of side walls of one of the housings for receiving a security device. Screwdriver receiving slots are formed in each of the first and second ends of the fasteners. An axial slot is formed in the second end of the fastener and alignable with apertures in the side walls of the other housing for receiving a security device. An enlarged head end on the fastener enables finger rotation of the fastener. The end walls have an elongated upper end forming a finger grip surface to facilitate movement of the first and second housings toward each other.

Abstract: A fastening device for fastening skateboard trucks to a skateboard, or other articles and components to one another includes a threaded hexagonal body element having a planar upper surface and a planar lower surface. The threaded hexagonal body element body element includes a threaded receiving aperture for receiving a bolt or screw. An enlarged hemispherical head with a circular surface is mounted on or formed integrally with the threaded hexagonal body element on the planar upper surface. The enlarged hemispherical head has a hexagonal aperture in a central polar region thereof being adapted to receive and secure a hexagonally configured tool therein.

Abstract: A cylindrical lug nut is formed with a threaded axially inwardly opening bore and a concentric chamfer for abutting the chamfer and the lug nut bore of a wheel and an axially outwardly opening lug socket for complemental receipt of a square drive lug for driving of the lug nut. An adapter may be provided which includes on one end a square lug and on the other end axially stacked bosses having, respectively, a large hexagonal cross section for receipt in a large hexagonal socket of one conventional tire wrench and a smaller hexagonal socket of a second tire wrench.

Abstract: A hinge connects the webbing of a first bridge span to the webbing of a second bridge span. The hinge has male hinge plates on opposite sides of the first span's webbing and has female hinge plates on opposite sides of the second span's webbing. A shaft passing through the male hinge plates and first span's webbing is threaded on the ends but is smooth between the ends. Pockets at outer surfaces of the male plates surround the threaded ends and accept torque limiting nuts engaging the shaft. The nuts have heads, recess bodies and frangible necks connecting the heads to the bodies. No part of the bodies extends past the outer surfaces of the male plates. When the nuts are driven onto the shafts at a given torque, the necks break and the heads twist off. Then any remaining parts of the necks are removed. The male hinge plate can then be rotatably mounted adjacently between the female hinge plates.

Abstract: A nut for a spoke of a spoked wheel includes an elongated, hollow, internally threaded body having flattened side faces and which progresses to an enlarged head portion along a rounded collar that permits self-alignment of the nut in a spoke hole of a wheel rim when the spoke is tensioned by the nut.

Abstract: A threaded fastener having an elongated threaded shaft portion, an enlarged head portion connected in axial alignment to said shaft portion, and a plurality of longitudinal grooves positioned circumferentially around said head portion. The fastener has a longitudinal axis, and the grooves are positioned parallel to this axis. The grooves engage the shaft portion adjacent the head, such that the grooves extend completely from the free end of the head to the point where the shaft is connected to the head. The grooves preferably extend radially toward the longitudinal axis to a depth equal to the outer diameter of the threaded shaft.

Abstract: An improved securing structure for air valves including a nut being a tapered hexagonal rod structure for use with suitable wrenches. The nut has a projecting configuration to prevent the problem with the prior art in which the nut cannot be properly tightened or loosened when the nut is positioned too near the rim of the tire.

Abstract: A screw-nut fastener assembly in which a nut member is welded onto the head of a screw member having a variety of drive means, such as a straight slot, a cross recess drive or other suitable drive means.

Abstract: A screw includes a head and a shank which extends from one side of the head, a substantially cubic recess defined by four sides in the other side of the head, each of the four sides having a short slot perpendicularly outwardly extending therefrom and each of the four short slots communicating with the cubic recess.

Abstract: A screw having a tool slot in the upper surface of its head, wherein the tool slot is defined by a plurality of circularly arched upright grooves and a plurality of flat upright wall portions, which are alternatively arranged around the border of the tool slot for permitting a hex wrench and a grooved wrench to be alternatively fitted into the tool slot and driven to turn the screw; the head is made of oval shape having smoothly curved side wall portions and flat side wall portions alternatively arranged together and adapted for turning by open-end wrenches of different sizes.

Abstract: The present invention provides a device for protecting automobile wheels from being stolen, wherein the barrel portion of a hub nut to be tightened onto a hub bolt of an automobile wheel is shaped as a turning operative engaging surface in the form of a quasi-equilateral triangle whose each side consists of a convex surface. The engaging surface is cut at one, two or three sides thereof to form keyways extending parallel with the axis of rotation. Thus, unless an exclusive turning tool adapted to fit on the hub nut is used, the wheel cannot be removed.

Abstract: A screw comprising, in succession between a first end and a second end thereof: a first polygonal head; a breakable neck; a second polygonal head; and a threaded shank; the diameter of the breakable neck being smaller than the diameters of the heads and of the shank, the screw further comprising a cylindrical bearing surface portion situated between the breakable neck and the second head, and having a diameter not less than that of the breakable neck, but less than that of the second head. A tool for tightening such a screw comprises a tightening endpiece including resilient means that project radially into the inside of the tube while they are in the free state, and that are capable of retracting to allow the first head of the screw to be inserted as far as the engagement portion of the tube and to co-operate with the cylindrical bearing surface portion of the screw when the first head thereof is in said engagement portion.

Abstract: A driving assembly for driving opposed first and second driven members includes an elongated rod and a stop unit. The elongated rod extends through a through-hole of the second driven member. The elongated rod has an enlarged threaded first portion which is adapted to extend threadably through a screw hole of the first driven member and which is sized to prevent extension of the first portion through the through-hole of the second driven member, and a second portion which is adapted to extend out of the through-hole of the second driven member. The first and second portions of the elongated rod extend from two sides of the second driven member. The stop unit is connected to the second portion of the elongated rod so as to prevent axial movement of the elongated rod toward the first driven member.

Abstract: A screw for snugly-fitted tightening pairs, of the type having a lobate head or a lobate-socket head (31), in which each lobe (37) is formed of one face (37') directed in a substantially circumferential manner and two other substantially parallel faces (35, 36) directed inwardly of the screw; said screw is provided with a reaction surface (33) with a tightening wrench (32). The portions of said reaction surface (33) included between two adjacent lobes are comprised each of a pair of faces (38, 39) inclined to each other to form an angle concave towards the outside of the screw, so as to constitute a reaction surface with a wrench of a polygonal profile. Such a screw can be operated to advantage either with the polygonal wrenches of the known art, or with an innovatory mating wrench of a lobate configuration.

Abstract: The invention herein disclosed involves a "tamper-evident bolt". More specifically, the bolt has ratchet or splined teeth on the outer periphery of the bolt head which will accept a socket for tightening the bolt. In the center of the head of the bolt is a sealed or capped blind axial recess. The recess is fitted to accept a driver to release the bolt. In a specific embodiment the blind axial recess has ratchet teeth. A seal or cap is received within the blind axial recess such that the seal or cap must be removed for access to the bolt releasing means, thereby indicating the possibility of unauthorized tampering with the bolt.

Abstract: An interference fit fastener and threaded puller attachment in combination. The fastener has a shank with an external thread and an axial recess with an internal thread, the threads being of opposite hands. The puller attachment is threadly engaged to the internal thread so as to exert an axial pull on the fastener, and to resist torque exerted on a nut or collar being applied to the external thread. After the fastener is set, the puller is removed.

Abstract: A surgical device for percutaneous connection of a fractured upper part of the femur to the shaft comprises: a connector plate with a lower straight portion for screwed connection to the femur shaft and with a sharp bottom end for insertion through a small skin incision, having its upper portion perforated by two oblique, tapped bores for fixation of two long screws serving for connection of the fractured parts. Each screw has a wood-screw-shaped inner end and a cylindrical shaft with a hexagonal recess at its outer end which is continued by a tapped bore. Each screw is slidingly positioned in a sleeve which has its outer end slotted and screw-threaded for fixation in the oblique bores of the plate.

Abstract: The invention relates to a screw for fixing an intramedullary nail in position. An external thread on the screw shank is provided over only a part of the length of the shank. The screw head is provided with an external thread having a direction of helical advance which is opposite the direction of helical advance of the screw-shank thread.

Abstract: A screw having a driving socket capable of receiving a square socket (Robertson) type driver, a cross-recess (Phillips) type screw driver, and a flat blade driver.

Abstract: An improved fastener having a non-circular head with a concave recess providing a datum useful in centering the head relative to a non-circular socket of a driving member is disclosed. The recess may have a frusto-conical wall defining an upper, circular edge or substantially triangular walls defining an upper, non-circular edge. An improved tool useful to drive the improved fastener is also disclosed. In the improved tool, a driving member has a tubular extension with a non-circular socket, and a centering pin is axially movable toward and extended position, in which a convex end of the centering pin fits into the concave recess of the screw head when the socket of the tool extension is axially fitted over the fastener head. The centering pin is biased toward the extended position.

Abstract: A head bolt and associated socket includes a head portion associated with the bolt configured for enhanced grasping thereof by a complementary tool member. A first and second multifaceted stepped torque application head surface of the head bolt are utilized for the spreading of torque loads to the head surfaces of the bolt minimizing distortion by or deformation of the head surfaces during torquing. A modified aspect of the invention includes an adhesive sealing fluid contained within the head bolt selectively utilized and directed by the socket.

Abstract: A screw fastener and a tool for driving the screw fastener is disclosed. The screw fastener has a polygonal driving socket in its head, the driving socket having a substantially square first section and a second section including a rectangular slot radiating outwardly from the center of each side wall of the first section. The depth of the first and second sections are the same. Further, the screw fastener may be provided with internal ducts for conveying lubricant into a workpiece hole in which the fastener is being turned. A driving tool having a square shank for turning the screw fastener is also disclosed. One end of the tool's shank has a driving section comprising a rectangular fin extending longitudinally along and radiating outwardly from the center of each side wall of the shank. The shape of the driving section is complementary in shape to, and dimensioned to be snugly received in, the driving socket.

Abstract: A threaded fastener that includes a drive head having a recessed region and a threaded shaft that is mechanically and radially attached to the drive head is improved to comprise a drive portion. The drive portion is mechanically attached to the opposite end of the threaded shaft as a drive head and has a geometric shape that is a mating image of the recessed portion of the drive head and is on the same axis as the drive head. With such a configuration, the drive portion of one threaded fastener can be mechanically coupled to the recessed region of another threaded fastener in a stacked fashion such that one threaded fastener is used to drive another threaded fastener into a threaded receptacle.

Abstract: A novel machine with an internal combustion engine, and practical use-control means to prevent an unauthorized person from starting such engine, and anti-bypass means to prevent a knowledgeable prepared unauthorized person from defeating use-control means within a practical period of time as a feasible means for unauthorized starting of the engine. Use-control means require a proper authorization code be entered into code-input means before enabling engine starting. Anti-bypass means include enclosing parts of the use-control means within a tamper-proof enclosing-component and selecting such parts and components so that use-control means cannot be manipulated to start the engine by an unauthorized user within a practical amount of time. In one embodiment a solenoid component containing a shielded enclosure and two solenoids is attached to the starter-motor of a car or truck using novel one-way fasteners.

Abstract: A drive head for the screw of a scissors jack which is formed in the shape of a wing nut which has a hexagonal socket formed between opposed walls so that a conventional folding lug wrench can be used by inserting its hex tube into the hexagonal socket to drive it. In the event of overload, the lug wrench will slip relative to the wing nut so as to prevent excessive loads and stresses upon the jack.

Abstract: A system for mounting vehicle wheels is disclosed in which at least one lock nut secures the wheel upon lug bolts to prevent theft. The dimensions of the lock nut are selected such that a lock nut tool may also tighten and remove polygonal nuts that are used to secure the same wheel to the lug bolts. With this invention, a vehicle owner or a vehicle assembly line is not required to have two distinct type of tools, and the assembly line is not constrained to having the lock nut tightened at a particular lock nut tightening station.

Abstract: A clamp part which is designed as a terminal strip is attached to a support part. A component, designed as a molding, has clamp bodies which can be located in the clamp part. Each clamp body has a rotatable shank which can be clamped in the clamp part in one position and can be withdrawn from the clamp part in another position. By this means, the component can be easily detached.

Abstract: A combined socket is provided, whereby a screw can be driven either by a cross tipped Phillips type driver or by a square Robertson type driver. The wings of the socket have end walls that curve convexly to permit the end wall to be clear of the corner of the square, right down to the bottom of the end wall. The vertical side faces of the socket have portions inclined at different angles. The upper and lower portions are inclined respectively at a greater angle to the vertical and a smaller angle to the vertical as compared to the side faces of a conventional Robertson type socket allowing a Robertson type driver to contact the side faces part way along the faces.

Abstract: A locking screw is disclosed having a shank and a frustoconical head with a cavity therein and a knurled annular end surface portion encircling the cavity. The locking screw is disposed within the arm of a joint connecting member which arm is inserted in a tubular structural member. The screw is turned out from the arm into engagement with the structural member holding the joint and structural member securely together.

Abstract: A fastener for insulated roofing comprises a non-metallic, screw-threaded shank, having a penetrating point at one end of the shank and a transverse plate carried at the other end of the shank. The shank and transverse plate are preferably integrally method out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi. as tested by ASTM D638. Such a fastener has a great advantage in terms of cost and lack of corrodability, while still exhibiting the required strength. Also, a universal driver socket is provided.

Abstract: A fitting for establishing a seal between an insulated electrical cable (70) and an electrical junction box, where the junction box wall has a threaded bore and a profiled through-hole having a camming surface and shoulder. The fitting includes a threaded nut (50) and a ferrule (30) which has tines (34) extending from a ring portion. The ferrule (30) and the nut (50) are slid over the insulated cable (70) and the assembly is brought in registry with the threaded bore (8) of the junction box. Screwing the nut (50) and ferrule (30) forwardly causes the tines (34) on the ferrule (30) to contact the camming surface (12), forcing the tines (34) into the insulation (72) and the insulation (72) into the shoulder (16), thereby establishing a sealed connection. In a further improvement, the nut (50) has first and second wrench-engaging portions (100, 101) formed integrally therewith.

Abstract: A fastener having a retaining member with a top portion and an elongated hub extending downwardly from the top portion. A helical groove extends throughout a substantial portion of the length of the hub and the upper end of the helical groove is formed to change the lead between the upper end of the helical groove and at least the uppermost loop of a helical coil mounted in the helical groove to create a tensile load on the hub by a helical coil having at least the uppermost loop located in the helical groove. A helical coil with a plurality of loops has at least the uppermost loop located in the helical groove in the hub, and the end portion of the uppermost loop contacts the portion of the groove formed to change the lead to create a tensile load on the hub to mount the helical coil on the hub.

Abstract: A tamper-proof bolt including a shank with a threaded end portion merging into an unthreaded portion of lesser diameter merging into an enlarged unthreaded portion merging into the larger base of a frustoconical head also having a smaller base, an undulating curvilinear groove in the smaller base, an island having lobes within the groove, an outer side in the groove, an inner side in the groove formed by the sides of the lobes of the island, and a cylindrical boss on the island extending axially outwardly from the smaller base and having a radial dimension which is approximately equal to the minimum radial dimension of the undulating groove.

Abstract: A prefastenable torque-shear bolt has a bolt cut with a thread adapted to engage a nut, and full-fastening and prefastening grips each having wrench-engaging surfaces. One end of the bolt continues to a first transition portion that is tapered like a truncated cone. The full-fastening grip extends from the first transition portion and a full-fastening break-off groove. One end of the full-fastening grip continues to a second transition portion tapered like a truncated cone. The prefastening grip extends from the second transition portion and a prefastening break-off groove. The effective area of the fracture surface of the prefastening break-off groove is smaller than that of the full-fastening break-off groove. A first burr that arises on the threaded portion side when the full-fastening break-off groove is formed by rolling is formed on the first transition portion, and the outside diameter of the first burr is smaller than the diameter of the thread bottom in the threaded portion.

Abstract: The mounting device has an elongated body having a wood screw on one end and a (machine screw) threaded hole at its other end. The drift pin mounted in the cross bore provides a handle for screwing the body into a tree or post. The body at said other end has a hexagonal exterior enabling use of a wrench to screw the device into the tree. When the device is mounted in a tree an archer can transfer the container of a "trailer" from his bow to the device, thus freeing the archer to do other things while waiting for his prey to die.

Abstract: A limited torque bolt-nut assembly including a bolt shank having a threaded first end portion and a non-threaded second end portion, a secondary drive head on the second shank portion and a primary shearable drive head on the secondary drive head, and a hollow nut secured over both drive heads and a portion of the non-threaded shank section. The hollow nut drives the primary drive head which rotates relative to the secondary drive head until the primary drive head shears off at a predetermined torque releasing the nut and primary drive head. The secondary drive head remains on the bolt shank for adjustment and removal of the bolt.

Abstract: An improved arrangement for driving threaded screw fasteners both manually and automatically utilizes mating conformations in the fastener head and driver including a central, preferably conical, depression in the head and a complementally shaped central projection extending from the driving tool. Further, the head is formed with slots, less deep than the depression, which open both at the depression and at the outer margins of the head. The driver is formed with corresponding blade sections.The central projection and depression are formed such that force along axis of the driver toward the head and rotational force about the driver axis tend to force the fastener axis to alignment with the driver axis.

Abstract: A torque limiting set screw is disclosed with a driving head at one end and a seating head at the other end. The driving head is connected with a threaded shank by a torque control neck. The seating head comprises a disk having a seating surface with a point extending from the surface for indentation into a member to be retained. The seating surface is of larger area than the cross-sectional area of the shank and is adapted to seat against the member after the point is fully indented. The large area surface engagement by the seating head distributes the force of the set screw on the member and prevents damage to the member.

Abstract: A drive cavity for a threaded fastener which is compatible with a variety of wrench drivers having hexagon-based profiles. The drive cavity is a prismatic projection of a multi-, primarily flat-sided, profile having its radially inner margins defined by the mid-sides of a common base hexagon and its radially outer margins defined by six trapezoid sectors each centered on and outlying the corners of the base hexagon.

Abstract: A mounting system for conveyor idlers incorporates an assembly nut having a plurality of different pairs of parallel faces spaced around the periphery of the nut, such faces being spaced apart by different distances to allow use of the mounting system with a plurality of different styles of mounting brackets.