Abstract: A coupling for a flexible shaft for a pump rotor orbiting within a stator. Coupling of the shaft to a driving or driven member is made easily by screwing the end of the shaft by hand into a socket in the member, and by then locking the shaft against rotation in the socket by means of abutting complementary oblique faces at the end of the shaft and at the end of a locking element in a transverse bore intersecting the socket. The screwing in of the shaft into the socket need not be more than fingertight. This permits the use of a shaft of uniform cross section (no flats for spanners) having a smooth surface finish, thereby providing good fatigue life.

Abstract: A double quill-like, security mechanism having a pair of concentric, hollow cylinders, one positioned to rotate wholly within the other and restricted against axial displacement thereby to provide means for supporting a rotatable gate structure carried by the outer cylinder against removal therefrom except at a predetermined angular relationship of rotation between the two cylinders.

Abstract: A fastening device is disclosed for joining two members, for example tubular members, together, one of the members having a recess in an end which is to abut the other member. The device includes wedge elements which are moved relative to one another to engage opposed internal walls of the recess in the one member so that by attaching one of the wedge elements to the other member the members are secured to one another. Deformable links interconnect the wedge elements to initially retain the elements in their operative positions but to subsequently deform when relative movement is produced between the elements.

Abstract: An annular type disc brake assembly having parking brake apply springs which are pre-loaded is arranged for disassembly in such a manner that the load on the parking brake springs must be evenly released in small increments until there is no pre-load on the springs. This is accomplished by providing several of the securing bolts assembling the housing section containing the spring to another housing section of a different, longer length than the remaining securing bolts of this type. The longer bolts are arranged so that they can be moved translationally into position in the one housing section before assembly and have at least a portion of the bolt heads then covered by slotted safety lugs formed as a part of the one housing section. When the disc brake is to be disassembled, the shorter bolts are first removed, leaving only the longer bolts to hold the housing sections together and resist the force of the parking brake apply springs.

Abstract: A shaft clamping device is disclosed comprising an annular collar having a radial through slot. The collar has a recess and a coaxially aligned tapped opening respectively formed on opposite sides of the slot and which cooperate with a clamping screw for expanding or contracting the diameter of a clamping surface defined by the center opening of the collar. The collar recess includes a tapered diameter surface between an enlarged entrance of the recess and a clearance hole therein to provide a clamping screw bearing shoulder for seating a tapered diameter bearing surface of the clamping screw and providing for reduced stress concentration in a clamping collar of increased strength.

Abstract: An arrangement for supporting a railing and the like has a hollow base member, a hollow bar-shaped member telescopable over the base member, and a clamping element insertable in the base member and spreadable apart so as to spread the base member into clamping engagement with the bar-shaped member. The clamping element has two clamping portions which are partially separated from each other over a plane extending in a direction of elongation of the clamping element and are movable relative to each other in a direction transverse to the direction of elongation. Means are provided for spreading apart the clamping portion, including screws screwable in one of the clamping portions. The clamping portions each has a section outwardly projecting from the base member and adapted to be spread into clamping engagement with the bar-shaped member. The base member and the bar-shaped member have holes provided in walls adjacent to the clamping portion so that the screws may be screwed in the latter through such holes.

Abstract: A guide to assist in inserting a fastener into a first hole in a first surface which is accessible through a second hole in a wall facing the first surface, comprises a plastic tube press-fitted through the second hole, extending to and surrounding the first hole. A thin plate overlying the wall contains a hole concentric with the second hole but whose diameter is smaller than the fastener, whereby the fastener is held captive within the tube.

Abstract: A variable connector for interconnecting lengths of tubing to form frameworks. The connector consists of a central body member having a number of attachment points formed thereon and a series of separate connector members which are adapted to be releasably secured to desired attachment points on the body member by means of screws or the like. Any one of a number of possible connector configurations may therefore be obtained merely be securing the required number of connector members to the required attachment points on the body member.

Abstract: The invention contemplates a locking-ring configuration for use with a set-screw anchored collar, bearing ring or the like, to apply continuous load to the set-screw region (a) for enhanced set-screw clamping action upon a shaft and (b) for enhanced retention of set-screw adjustment. Various forms are described in the context of set-screw clamping of an anti-friction bearing via the inner ring thereof.

Abstract: A fitting component for mounting in a piece of furniture for receiving a hinge or the like. A generally cylindrical fitting component with a central opening for receiving the hinge and a pair of opposed inclined openings, with a locking element positioned in each inclined opening. Each locking element includes a cam section and is rotatable from a first position within the circumferential outline of the fitting component into a second position in which the cam section projects beyond the fitting component circumference for engaging the piece of furniture and anchoring the fitting component therein.

Abstract: A wall construction comprising a plurality of wall panel sections interconnected by an anchoring plate which has a frustoconical hole at each of two ends. The ends are disposed in anchoring or connecting side members mounted in respective, mutually juxtaposed panel sections. The plate is connected with these members by connecting bolts, each of which has a bolt end portion for screwthreaded engagement with one of the anchoring side members, and an intermediate frustoconical bolt portion engaging an associated frustoconical hole of an anchoring or retaining bar or plate, so that when the connecting bolts are screw engaged with respective side members the frustoconical bolt portions of the bolts are shifted relative to the holes in the anchoring plate, whereby adjacent connecting members, with their panel sections, are drawn together to bear tightly against one another.