Abstract: A pivot joint having a housing member with a pair of opposing coaxially aligned bores in communication with an elongated channel transverse to the bores. A cylindrical member extends across the channel and rotates within the bores. The cylindrical member is longitudinally split to form a pair of clamping sections having a double-D configuration. A passageway is formed through the cylindrical member transverse to its axis and spanning across the split to define opposing concave bearing surfaces for receiving an axially adjustable rod therethrough. A locking clamp extends into the housing for locking the clamp sections together in a desired rotational orientation within the bores, thereby securely clamping the rod in a desired angular orientation as well as in a desired axial extension.

Abstract: An integrally formed releasable joint connector has a central bridge member with two bosses flexibly connected to the central bridge member and projecting in opposite directions from the opposite ends of the central bridge member. The two bosses are each generally cylindrical with an H-shaped transverse cross-section and are adapted to be received in and frictionally grip hollow structural members, such as tent poles, hollow frame members of a display counter, and the like.

Abstract: A bushing for connecting a tool head with a tapered eye to a fiberglass tool handle. The bushing, formed in two sections, is mounted around and over a tongue on the distal end of the handle and is configured externally to be wedged by driving the bushing and handle in proximal direction to the eye of the tool head. Complementary double tapers on the tongue and the corresponding interior surface of the bushing are pressed into engagement when the bushing is driven into place in the tool head. The tapers on the tongue hold the bushing longitudinally in place on the handle. Spacers having the double tapered shape and/or flexible shims are provided for expanding the bushing to adapt it to fit larger eyes and to accommodate manufacturing tolerances of the tool eye hole. The cross sections of the eye and bushing are ovate with the major axis of such oval shape perpendicular to a striking face on said head.

Abstract: There is disclosed in the present application, a retainer for sockets especially useful in connection with socket wrenches and accessories. The retainer, which is added to a male member includes a spring-pressed lever which is depressed as the mating female member or socket is introduced over the lever and then locks into the interior of the socket with a self-energizing form of engagement to resist withdrawal until the spring pressure is overcome to release the lock.

Abstract: A ball joint includes a ball member having a spherical end, and a socket member having a recess for rockingly receiving therein the spherical end of the ball member. At least one pin is mounted on the socket member and has opposite ends which pass through aligned openings formed in the socket member. A central portion of the pin slidingly engages with the spherical surface of the spherical end of the ball member thereby retaining the spherical end of the ball member.

Abstract: A fitting device for fitting a peg member and a hole formed in a hole member into each other including a stationary base, a movable base for supporting one of the peg member and the hole member, and a three-dimensional spatial mechanism having at least six degrees of freedom. The three-dimensional spatial mechanism includes a plurality of sliders supported on the stationary base for non-linear movements.

Abstract: A metal structural tie strap for fastening two or more nailable wood members to one another; the strap being formed with nail openings which are equidistant from one another and fall within nail holding means adjacent the edges of the strap. The edges of the strap transverse to the longitudinal axis of the strap are non-linear, forming a pattern in which the leading edge is a reverse image of the trailing edge.

Abstract: The disclosure is directed to an apparatus for joining a plurality of struts at a vertex, such as the vertex of a geodesic or a space frame structure. A plurality of strut supports are provided, each strut support including a pair of substantially parallel spaced side plates for receiving and securing one of the struts, with a longitudinal face of the strut aligned with a pair of the longitudinal edges of the side plates. Each strut support also includes a clamp between the side plates, the clamp having a generally rectangular base plate mounted across the side plates in substantially perpendicular relationship to said longitudinal edges of the side plates, such that an end face of the strut can abut against the base plate of the clamp. The clamp also has a pair of generally parallel flanges extending away from the strut at an oblique angle with respect to the flange base plate. The clamps of each of a plurality of strut supports are joined at a tubular hub member that is typically cylindrical or polygonal.

Abstract: A joint for interconnecting confronting end portions of two elongate members so that the elongate members are movable between first and second positions. In the first position, the elongate members are releasably locked in a coaxial, erect supporting position in which confronting end portions of the members are closely spaced from each other. In the second position, the elongate members are spaced from and substantially parallel to each other. The hinge includes a central block member having a generally U-shaped profile, with guide surfaces and cam slots in its flanges. Guide members having similarly shaped guide surfaces and cam slots are connected in pairs to opposite ends of the block member and cooperate with the guide surfaces and cam slots to control movement of the tubular members between the first and second positions.

Abstract: Disclosed herein is a coupling clamp formed by shaping a sheet-metal blank or tube length and having an axially slotted hollow body (14) forming a socket for a shaft or other transmission member and having a lug (17) depending from either side of the slot (15), the lugs being pierced (18) for the passage of a bolt or the like by which the clamp can be tightened to bear radially onto a shaft, at least one of the lugs having at least one internal tab (13) extending at least part-way across the slot and shaped to bear radially onto a shaft on tightening the clamp.

Abstract: A device for attaching an article, such as an armrest, a hand grip, etc., to a base surface is disclosed. The device comprises an attachment clip and an insert which is receivable in an aperture in the clip. The clip is secured in an opening in the base surface. A dentate structure is provided either on the insert or in the attachment clip, and a locking device is provided on the other of the insert or the clip to engage the dentate structure, thereby to secure the attachment clip and the insert together. The locking device preferably is a suitably shaped spring. The insert is either tubular in shape, or a longitudinal segment of a tube. Rotation of the insert to one orientation disengages the dentate structure and the locking device, enabling insertion and removal of the insert. Rotation of the insert to another orientation engages the dentate structure and the locking device for locking the insert against longitudinal shifting.

Abstract: This invention relates to a locking device applied to the supporting stand of percussion instruments, for example snare stand, tom-tom holder, cymbal stand, timbales stand and all kinds of joints of drum outfits, etc., which locking device allows the splaying angle of the two arms to be adjusted to any operable degree without the inconvenient constraint of the calibrating teeth, thereby largely simplifying the operating procedure and enhancing the practicality thereof.

Abstract: A stand for television sets comprising a pair of inverted T-shaped leg sections each comprising a pair of leg members of L-shaped configuration which interengage and nest to form a four-legged base. An elongated bolt member is fixed at the head end to one of the leg sections and has a threaded end projecting beyond the top end of the base. When the leg sections are nested, the bolt is disposed in a concealed elongated cavity defined by the leg sections. A closure cap assembly is mounted at the upper terminal end of one of the vertical portions of one of the leg sections and in the illustrated embodiment forms an integral subassembly therewith. The overcap assembly has a configuration and arrangement to vertically align the leg members relative to one another and provide a certain parallelism of the parts so that all the bearing surfaces are parallel to one another and to the support surface such as a floor.

Abstract: The coupling for connecting a winding rod for a roll of web material to a driver shaft, includes a tenon-like end portion of the rod and a matching socket formed at the end of the driver shaft; exchangeable wearing plates are inserted in between the flat coupling surfaces of the end portion and the socket or the socket snugly accommodates a one-piece wearing insert defining a recess for engaging the end portion of the rod.

Abstract: An extensible and retractable strut comprising telescoping pairs of members the outer of which carries a manually operable collar that is slideable between locking and unlocking positions. The collar carries a manually-releasable pivoted locking lever having an offset end that can be received in an opening of the outer member to lock the strut in adjusted position against release when the collar is in its locking position. When the collar is in the unlocking position, the offset portion of the lever is out of registration with the opening and instead bears against the exterior of the outer member. For such circumstance the members are relatively moveable between their extended and retracted positions. A keying means carried by the collar is engageable with cooperable means on the outer member to maintain the collar in a given aligning position.

Abstract: The invention relates to a device for providing a friction joint by pressing a number of first elements against a second element by means of a pressure medium acting on said first elements. In order to obtain an improved ability of transmitting a torque and an improved stability regarding radial load, said first elements are so arranged that they encircle or are encircled by said second element and are acted upon by a number of mutually independent portions of the pressure medium, each portion acting on its own element.

Abstract: This coupling device locks together overlapped lengths of coil-thread rebar by positively interengaging segments of the device with the threading of the respective rebar rods, and positively interengaging the segments themselves for alignment, and to complete the stress transfer.

Abstract: A thermal connector adapted to connect a calorie dissipating support to a thermal drain. It comprises a deformable metal two-part clamp, each part of which is constituted by two webs conforming to the shape of the dissipating support, as regards one of said clamp-parts, and the shape of the thermal drain, as regards the other clamp-part. Said connector is also provided, between said two clamp-parts, with a housing for an actuating-key with longitudinal edges, said key having a position of rest at which said longitudinal edges do not exert any force whatever on the walls of said central housing, the webs of the end clamp-parts being then moved apart and said connector being unlocked, and a working position, obtained by causing said key to rotate by a quarter turn with respect to said position of rest; said key has then the function of moving apart the walls of said central housing and to draw the webs of each of said end clamp-parts nearer to each other, said connector being thus locked.

Abstract: The invention relates to a furniture fitting in the form of a cup-shaped hinge housing which can be anchored into a bore of a furniture door and used as a door side pivot carrier for a furniture hinge. The hinge housing has a locking element which can be rotated about an axis at right angles to a circumferential wall and which has a section for holding the locking element when it is in a locked position. In a preferred embodiment of the hinge housing, two swivelling locking elements are provided which are connected to each other by a bracket shaped element so that when the bracket shaped element is swivelled to a given position by hand the locking element is moved into a locking position.

Abstract: An industrial fastener, which may be secured or released by a one-quarter turn, includes a rotatable bolt. The bolt has a cam face on the underside of its head, a shank having opposite flats and a screw threaded end portion. A turning means, such as a handle member, slides on the bolt and has matching opposite flats to turn the bolt. The fastener also includes a spring which detents the handle member and an adjustable nut.