Abstract: Means are provided for forming an anti-friction pressure seal between a surface and an element movable relative to that surface such that a fluid containing compartment may be divided into zones of different pressures. The seal includes a roller bearing, at least partially received within a cavity in the element, and a spring deformable to be positioned within the cavity between the roller bearing and the walls of the cavity. The spring has a first surface surrounding at least substantially half of the circumference of the bearing to retain the bearing in the cavity. The first surface, when the spring is inserted into the cavity, contacts the roller bearing substantially at only a single location between, but not including, the end sections thereof and substantially all other portions of the first surface are spaced from the roller bearing to minimize contact between the surface and the bearing.

Abstract: The joint includes first and second parts, each of which is operatively connected to a different one of two shafts. The parts are relatively movable about a given point in accordance with the angular movement of the shafts relative to each other and are rotatable in accordance with the rotation of the shafts. Each of the parts comprises a pair of radially spaced arcuate fingers which mesh with the corresponding fingers of the other part. One of the fingers on each part is provided with a slot. The slots align radially when the fingers mesh. A pin is provided, extending through the slots to connect the parts for simultaneous rotation and to permit relative movement between the pin and the parts, respectively. The other finger on each part is provided with a gear rack. A beveled idler gear, mounted on the pin, meshes with the gear racks simultaneously and is rotatable as the parts and thus the racks are moved relative to each other.

Abstract: The rotary engine includes a casing having a spherical cavity, or working sphere, therein and an engine shaft rotatably mounted in the casing. A driven cylindrical member, or drum, having four combustion chambers therein is rotatably mounted within the casing bisecting the spherical cavity, and said driven member is connected to the engine shaft. A hollow driving circular member, or plate, operatively connected to the driven cylindrical member by passing through the center thereof and is mounted within the spherical cavity, or working sphere, of the casing. The intersection of the driven cylindrical member by the driving circular member forms four spherical wedge-shaped variable volumes referred to as "compression-expansion" chambers, within the working sphere. It is the expansion of the ignited gases within the compression-expansion chambers that drives the circular member, or plate, which in turn rotates the driven cylindrical member, or drum, that drives the engine shaft.