Abstract: A mechanism is disclosed to provide pivotal motion between two movable members. The mechanism includes a hemispherical yoke connected to one of the movable members. A center support is connected to the remaining movable member and is nested within the yoke and spaced apart therefrom. A set of four radially projecting torsion bars are connected to the yoke and center support. The torsion bars are substantially coplanar and define a cross-shaped configuration in plan. Four braces are provided to interconnect adjacent torsion bars. Preferably, each of the torsion bars is surrounded by a tubular segment which is affixed to the radially outer end of the torsion bars. Preferably the radially inner portion of the torsion bar is supported by a rotatable bearing. The subject mechanism is low in profile, easy to mount and dismount, and provides a degree of elasticity in the vertical axis.

Abstract: A snap type pin and box connector. A plurality of box diameters 24, 28, 32 interact with a plurality of pin diameters 36, 40, 44, 48 and 50 to produce a minimum clearance at an intermediate location 28, 44. The box load shoulder 56 is chamfered 54, as is a portion K of the split lock ring 14 adjacent to the split.

Abstract: A shaft connecting mechanism is provided between a slip-on hub and a power takeoff shaft by means of a control ring which extends around the slip-on hub and which is formed to have a pressure screw extend through a threaded bore therein, the pressure screw engaging against a clamping wedge in the slip-on hub which is formed with a trapezoidal configuration generally conforming with the configuration of an axiallly extending groove formed in the slip-on hub. Blocking members are arranged in radial apertures in the slip-on hub and pockets are formed in the control ring. The pressure screw when angularly aligned with the clamping wedge, places the control ring in the locked position and when the pressure screw and the clamping wedge are angularly unaligned, the blocking members enter the pockets in the control ring.

Abstract: The invention relates to a flexible metal joint in which two envelopes surrounding a metal core. The joint has, along its periphery which does not have an opening, at least two bosses, at which the envelope is not in contact with the joint core. A relative displacement between the flanges of the assembly between which the joint is secured consequently has no effect on the efficiency thereof.

Abstract: A ball joint in which the ball of a ball stud is accommodated in an accommodating section of a socket. The accommodating section has an annular seat on which a stopper is provided and a cap to be fitted in the accommodating section has another stopper. The two stoppers are received in a gap in an elastic ring-like member mounted in the annular seat such that a turning of the cap will increase the width of the gap to increase the diameter of the elastic ring-like member. In this state, the ball of the ball stud can be accommodated in the accommodating section of the socket.

Abstract: A subterranean well tool such as a packer and attached telescoping seal receptacle assembly is disclosed. The tool is fabricated from a plurality of threaded tubular members and annular deformable rings fabricated of a metal softer than the tubular members are used to establish metal-to-metal sealing integrity between interengagable component members. Upon full engagement, sealing integrity is established along the transverse interface between each tubular member and the deformed seal ring. During initial disengagement, sealing integrity is maintained along a bearing inclined interface between the ring and at least one tubular member adjacent the threaded connection.

Abstract: This invention relates to a process and a device for an angular connection of the end of a tube with one (or more) sheet metal element(s), quickly and reliably.The forward portion of a tubular shape (1) is contracted by force-fitting in a ring (2) whose outside dimensions are approximately equal to those of the opening (4) and the inside dimensions, less than the initial outside dimensions of the tubular shape, and whose rear end (6) is flush with the rear face (7) of the sheet metal (3), this ring (2) being compressed on the thickness of the sheet metal (3) between the tubular shape (1) and the opening (4) in the sheet metal, while the end (10) of the tubular shape is flanged outward in a corolla on the rear face (7) of the sheet metal element.This process can be used in particular to attach rungs to side rails of a ladder or rods to rails of guard railings and also for making scaffolding or tube exchangers.

Abstract: A termination for cables of the type having a central bundle of conductors surrounded by strength members includes a rigid sleeve closely surrounding the bundle of conductors beneath the strength members and a rigid housing surrounding the strength members outwardly of the sleeve. The strength members are encapsulated in a hardenable material to define an enlarged lug closely received between said sleeve and housing. The housing and lug have cooperating cam surfaces for compressing the lug between the housing and sleeve when a pulling force is applied to the housing. The outer diameter of the housing is cylindrical and has a diameter approximately the same as the diameter of the cable outer cover.

Abstract: A turnbuckle is formed with a sleeve having a first fixing member threaded into one end and a second fixing member rotatably received in the other end of the sleeve. The second fixing member is formed by a shank and a screw threaded into the end of the shank and fixed in place by a transverse pin. The head of the screw is trapped internally of the sleeve against an internal shoulder. The structure of the second fixing member allows the turnbuckle to be readily dismantled and portions thereof replaced.

Abstract: A connector plate for erecting structures of varied configurations. The plate comprises a main body having connections formed thereon by which the ends of six different struts can be connected together in a particular manner to form a cluster, with the number of strut ends of a cluster depending upon the selected function of the cluster respective to the building desired. The connector plate has a plane of symmetry which passes longitudinally through two of the six connections, with the two connections lying in different planes arranged at an obtuse angle respective to one another, and thereby provides attachment means by which a roof strut is connected to a vertical wall strut end. This positions the roof strut at about a fifteen degree roof pitch. There are also two right and two left strut connections lying to either side of the plane of symmetry, with the two right connections lying in the same plane and intersecting one another at a 60.degree. angle to thereby form the apex of a wall triangle.

Abstract: A special structure comprising equidistantly positioned knuckles, a set of sections, and means for joining either end of said sections to said knuckles, where each knuckle is made up from two hollow base pieces whose outside shape is approximately that of a spherical shell in which there is a number of equidistantly positioned holes at an angular distance of a width respect to one another. At least one of the base pieces has a perimeter area which is bent inwards. An arrangement for the attachment of the first base piece is provided. When the base pieces are joined together all equidistantly positioned holes lie at an angular distance with respect to one another.

Abstract: A fixing member in the form of a clamping disc having a radial opening, and being adapted to be clamped onto a shaft with the aid of a counter member having a coaxial opening is disclosed. Fastening means connect the disc and the counter member to one another so as to embrace the shaft when the shaft is passed through the openings. The clamping disc has a truncated and normally generally conical portion converging in a direction towards the opening, an outer rim, and an inner accordian-like annular portion integral with the outer portion. The inner portion has an inner rim and radially outwardly extending folds defining substantially flat portions between adjoining folds. The inner rim has a wave-shaped contour as viewed radially outwards. The disc is adapted to support the counter member near the outer rim thereof in an axial direction.

Abstract: A hybrid scaffold assembly which employs a scaffold adaptor for transferring from a Tube Lox type of scaffolding to a stack-up type of scaffolding and vice versa.

Abstract: This connection means comprises a male connector (1) with a circular groove (5) and a female connector comprising a body (2), a cap (3) and a sleeve (4). The cap (3) hangs from the bottom end of body 2 within which it is able to partly slide. The cap has a bearing surface (7) bearing on the male connector (1) and its bottom part (9) covers the male connector. This bottom part is provided with a circular series of openings (10) each equipped with a finger (11) operable to slide radially. These fingers cooperate with windows (27) in a conical wall (26) of the sleeve (4). Connection is made by gravity, by body 2 pushing down on sleeve 4, which slides downward causing the fingers (11) to slide radially inward. Disconnection is accomplished by sending oil pressure through purposely provided channels (35, 33, 30) into a chamber (20), causing the sleeve (4) to slide up and the fingers (11) to retract.

Abstract: A retainer device is provided to prevent a pick head from sliding downwardly upon the wooden handle it is mounted upon. The device utilizes a thin bendable harness which wraps around the head and sides of the handle. Two shoulders are upraised from the upper surface of the harness and adapted to be outwardly oriented from the handle when the harness is wrapped around the handle. A pair of holding collars embrace the handle, engaging the shoulders. The pick head is positioned in abutment with the upper extremities of the collars.

Abstract: An assembly for allowing quick removal of a wheel from a vehicle is provided. The original wheel axle is replaced with an elongated axle which is adapted to extend through a block clamped to the vehicle frame. The block includes a spring-biased plunger which interfits with an annular groove at the end of the axle to lock the wheel and axle in place. The plunger is withdrawn from the groove to release the axle and allow one to readily remove the wheel.Alternately, an indented shaft fits within the groove to lock the axle. Upon rotation of the shaft to align the indentation over the groove, the axle may be released and withdrawn from the block.

Abstract: A master fitting is disclosed adapted to be subdivided into a set of vertex fittings for use in a truss structure which comprises a plurality of frame elements. Interchangeable vertex fittings with accurately aligned surfaces, slots and holes are provided at a low cost. The vertex fittings are adapted to form the frame elements with mating struts, or to form hinge joints for interconnecting groups of frame elements. The invention permits ease of assembly and quick and easy removal and replacement of a strut in the truss structure.

Abstract: A pivot mechanism for pivotably mounting a television receiver cabinet on a swivel base includes a molded pivot socket and a molded pivot pin. The pivot socket includes deformable tabs for locking engagement within an aperture in the swivel base. The pivot pin extends through an aperture in the receiver cabinet and includes deformable tabs for locking engagement with the pivot socket.

Abstract: A fixing device for joining two sheet parts as separated by a prescribed space from each other is disclosed which comprises a hinge part adapted to be bent perpendicularly, a base plate part connected to one end side of the hinge part and provided with a projecting fitting shank, and an engaging part connected to the other end side of the hinge part and provided with a pair of legs possessing engaging claws at the leading ends thereof and a retainer claw possessing an upwardly urged free end.

Abstract: A ledger system for scaffolding which comprises a tubular ledger member having an end plate at one or both ends and being provided at one or both ends with a first slot extending from the end plate parallel with the axis of the tubular ledger member and a second slot also extending from the end plate parallel with the axis of the tubular ledger member and located 180.degree. round the circumference of the tubular ledger member from the first slot, the second slot having an enlarged inner end; and a wedge member for each pair of slots being arranged to pass through the first and second slots but being prevented from being removed from the first slot by first and second retaining means located adjacent the broader and narrower ends respectively of the wedge, the width of the enlarged inner end of the second slot being such as to permit the narrower end of the wedge with the second retaining means to pass freely therethrough.