This invention relates to pumps having a varying output of the type comprising a plurality of parallel pistons housed in a common barrel, a means for rotating the said barrel about its axis and an angularly variable plate in relation with the said pistons for varying or adjusting their axial shifting.

A cart having a frame, auxiliary wheels on the forward end of said frame, four depending legs adapted to swing rearwardly to a collapsed position, releasable means bracing said legs, and an operator for actuating said releasable means, and a safety lock normally maintaining said operator inoperative.

This invention consists of a glass or plastic container of any desired size and shape having a vertically disposed neck in which is located a peripheral flange that is triangular in cross-section and whose short side is a horizontally disposed ledge on which is placed the horizontally disposed disk of a stopper that cannot be removed from the neck of the aforesaid container without the use of a key, as will hereinafter be described. The hollow stopper which is made of flexible plastic or the lik...

A tool head has two spaced opposite sides and a stepped opening including a smaller-diameter first portion of non-circular cross-section which converges from one toward the other side, and a larger-diameter portion extending from the other side to and in alignment with the first portion. An end portion of a handle is received matingly in the first portion and an end face of it faces the section portion. A threaded pin is anchored in the end portion of the handle and has a part projecting into th...

A capacitor having a dielectric impregnated with a nonthermohardening epoxy resin.

A game box includes a game box having a maze as part of its structure. A game ball is adapted to traverse the maze from a start position to a finish position in response to manipulation of the game box by a player. A transparent top wall encloses the game ball within the game box and enables the maze and game ball to be viewed by the player. An opaque cover is selectively movable from a first position, wherein the maze and game ball may be viewed by the player, to a second position wherein the m...

A revolver includes a frame and a crane pivotally connected to the frame. Upon the crane is releasably mounted a cylinder. The crane may be pivoted between a closed position, in which the cylinder is disposed within the frame in firing position, and an open position, in which the cylinder is free of the frame and may be quickly removed from the crane. The cylinder incorporates a ratchet-ejector mechanism which is operated to eject spent cartridges within the chambers of the cylinder by moving th...

A carton having top, bottom and side walls as well as end panels foldably joined to the end edges of the top wall is provided with a composite bottom panel including a pair of panels respectively adjoined foldably to the bottom edges of the side walls together with a plurality of projections extending from an edge of one of the bottom panels and arranged to be inserted into corresponding openings formed in a retaining panel foldably joined to an edge of the other bottom panel and secured in flat...

A fastener having a thread with a groove extending through and interrupting the thread, and a locking key retained in the groove and adapted to be driven axially to lock the fastener in a carrier part, with the groove being deformed by the key, upon initial installation thereof in the groove, to a slightly undercut cross-section confining and retaining the key in the groove.

A transducer of electromechanical or electroacoustic type comprising a piezoelectric strut supported by a frame on a diagonal thereof. The frame is subjected to face shear stress by deflections of a generally saddle shaped diaphragm termed a "diabow," inducing longitudinal stresses in the piezoelectric strut. The strut has electrodes for connection with an electrical circuit.