Abstract: A power transmission drive comprising driving and driven sprockets interconnected by a chain consisting of interlaced ranks of links having projecting toes to engage the tooth gaps of said sprockets and articulated by two-part pivots disposed transversely through aligned apertures in the links, the cross-section of each pivot part having generally the shape of a three-lobed convex hypotrochoid and the said apertures having generally the shape of a longitudinal section through a chicken egg.

Abstract: An arrangement for providing a driving connection between a shaft and an essentially annular member, such as a gear, sprocket, bushing or the like, in which the shaft is provided with spaced flats, at least at one end, and the bore of the power transmission member is provided with complimentary surfaces to receive the shaft, generally with a light press fit.

Abstract: A multi-flow, multi-path heat exchanger which surrounds the shaft of a coolant pump and is located between the pump impeller and a mechanical seal assembly for cooling hot liquid from the pump chamber flowing along the shaft to the mechanical seal assembly. The heat exchanger finds particular use with high-temperature, high-pressure pumps or with other pumps in which similar heat problems occur.

Abstract: A protector for protecting cable which is connected to a tubing string in a well. The protector is generally cylindrical having a bore adapted to be secured to the tubing of the string and is constructed in two pieces for ease of installation. A longitudinally extending slot is provided which is so dimensioned as to fully receive the cable. The protectors are spaced along the tubing string which may extend for great distances. The protectors may be of elastomeric material and may be eccentric with the cable receiving slot positioned in the thickest section. Lips overlying the slot may be provided as a measure to restrain the cable in the slot, to further protect cable from burrs or other protuberances and to provide wear points on the protector further from the cable.

Abstract: A one way clutch in which the tiltable sprags rock away from contact with the outer race upon its overrunning of the inner race and to so remain until the inner race revolves in the same direction as the outer race whereupon centrifugal force acting on the sprags rotate them into full engagement with both races and couples the races together.

Abstract: An expansible mandrel constructed to radially expand equally comprising a generally truncated polyhedron-shaped core member and a plurality of wedge members defining a cylinder, the core member being axially movable relative to the wedge members. Elastic means surrounding the wedge members maintain the wedge members in position relative to the core member.

Abstract: Resilient, preferably elastomeric or plastic means of a low modulus of elasticity are located in the lubrication passageway of a bearing housing to seal with the bearing race and to insure passage of lubricant to a lubricant opening in the bearing race and thus into the bearing and to its anti-friction elements.

Abstract: A roller bearing cartridge and a method of making the same is disclosed. The cartridge is constructed with an outer race assembly constructed of two identical parts, centrally joined together, such that openings are provided for a locking or locating pin and for the passage of lubricant regardless of the type of housing in which the cartridge is used, which housings have lubrication fittings and cavities for locking or locating pins in locations which differ from one another.The locking and locating pins restrict relative rotation between the outer race which is constructed with an arcuate outer surface and the housing which has the opening defined by an arcuate surface to receive the cartridge. The restricted relative rotation is between the cartridge and the housing and is such to provide sufficient relative rotation to permit the bearing assembly to be self-aligning to accommodate shaft misalignment relative to the housing support.

Abstract: A mechanical seal assembly having a rotary sealing ring and a nonrotatable sealing ring carried by a housing flange including means to provide improved fluid cooling of the face of the nonrotatable sealing ring and a self-compensating sealing face that increases the fluid leak rate through the seal as a function of heat at the sealing faces.

Abstract: The relatively rotatable sealing faces of mechanical seal are provided with circumferentially spaced pockets which provide a path of fluid flow across the sealing faces during rotation of the rotatable sealing ring but no path when there is no relative rotation therebetween. The fluid flow enhances the lubrication and cooling of the faces.

Abstract: A bearing strip is especially adapted for use in a marine bearing or the like is constructed of an elongated shape of elastomeric material with substantially parallel faces and edges, the edges each having a groove therein, so that when bearing strips are placed adjacent one another in a housing to form a bearing, a spline or key is received in the adjacent grooves to retain the strips in the housing. The grooves are preferably reinforced by a metal member having an insert portion in the strip.

Abstract: A mechanical seal cartridge applicable for a pump-motor combination which cartridge has a stub shaft adapted to be connected at one end to the motor shaft and at the other end to the pump shaft and which is enclosed in a housing located between the motor and the pump, the housing having an opening permitting access to the cartridge whereby it may be replaced as a unit.

Abstract: A sealed roller bearing having a double row of tapered rollers is disclosed. The bearing is insertable into and retainable within a rigidly mounted pillow housing such as a block casting or the like, such that the orientation of the bearing or flange is independent from the orientation of the housing. This self-aligning bearing is replaceable, without removing the housing from its mounting, and the dimensions of the bearing and housing are such that the assembly can be installed in place of existing non-self-aligning or fixed housings without modification of the installation site. Generally the fixed housing-bearing assemblies are small, compact and of relatively few parts. The assembly disclosed is compact, small and of relatively few parts, yet is fully self-aligning.