Abstract: A lightweight, collapsible, readily repairable, minimum thickness reel for cable, conduit, tubing or the like and the components of which are preferably molded of synthetic resin material. The end flanges of the reel each have a flat inner surface and a cellular outer surface for decreased weight. Molded, foldable ribbed tubing support units are interposed between the inner surfaces of the end flanges for receiving and supporting cable, conduit or tubing wound therearound when the support units are extended. The planar, inner surfaces of the end flanges have recesses for complementally receiving the rib portions of the leg segments of respective support units so that when the reel is in its collapsed condition the reel is not substantially thicker than the combined thickness of the side by side end flanges.

Abstract: A support apparatus for selectively supporting a human being in one of a plurality of positions includes a support structure and a seat assembly having a frame and a seat mounted on the frame for movement therewith. The seat assembly is positionable relative to support structure along an arcuate path defined by an arcuate guide track provided on one of the frame and support structure. A plurality of rollers are rotatably supported on the other of the frame and support structure, the rollers engaging the guide track to support the seat assembly on the support structure and being movable relative to the guide track to permit movement of the seat assembly relative to the support structure. A back support member may be pivotally mounted on the frame to permit selective positioning of the back support member in one of a plurality of positions relative to the seat while moving with the seat during movement of the seat assembly relative to the support structure.

Abstract: Twin linkage assemblies shift a support platform between a low profile, fully collapsed position and a fully extended position of a height suitable for supporting a workman underneath an aircraft or for supporting, for instance, an engine at a comfortable working position. A hydraulic cylinder and piston assembly is connected at opposite ends to swivel members and torque arms, the latter of which are connected to short links which in turn are coupled to linkages interconnecting a base and the work supporting platform. The torque arms, in cooperation with the swivel members, facilitate swinging of the links and linkages to reduce the force necessary to separate the platform and base to a value smaller than would otherwise be required.

Abstract: This invention relates to a pivotal closure for a container. The closure structure includes a collar defining an opening, and associated with the opening is a lid mounted for rotation about an axis generally coaxial with this opening. This lid is further mounted for pivoting about an axis normal to the axis of rotation between a closed position in which the lid closes the opening and an open position in which an aperture defined by the lid and/or the collar allows access through the opening. The rotation of the lid is governed by a cam mechanism operable by pivoting movement of the lid. The can mechanism is, generally, a saw-tooth cam surface associated with either the collar or the lid and a cam follower associated with either the collar or the lid, so that pivoting the lid from a closed position through an open position and back to a closed position causes the lid to rotate about the axis of the opening by an amount determined by the cam surface.