Abstract: A fluid device includes a housing defining a central bore, a plurality of commutator holes that extend radially outward from the central bore and a plurality of axial passages in fluid communication with the commutator holes. A fluid displacement assembly is in fluid communication with the housing. The fluid displacement assembly includes volume chambers in fluid communication with the axial passages of the housing. An output shaft includes a valving portion disposed in the central bore of the housing. The valving portion includes a first and second lands and a valving land disposed between the first and second lands. The first land cooperates with the central bore to define a first journal bearing and the second land cooperates with the central bore to define a second journal bearing. A coating is applied to the first and second lands of the output shaft. The coating includes a polyamide 11 material.

Abstract: An embodiment of a gerotor apparatus includes a housing including a first member. The first member includes a brake pin aperture formed therein. The apparatus also includes a brake pin at least partially interposed within the first member. The brake pin includes a first annular surface and a second annular surface. The first annular surface defines, at least in part, a first brake chamber. The second annular surface defines, at least in part, a second brake chamber. A first fluid introduced into the first brake chamber will urge the brake pin in a first direction. A second fluid introduced into the second brake chamber will urge the brake pin generally in the first direction.

Abstract: An embodiment of a gerotor apparatus includes a housing including a first member. The first member includes a brake pin aperture formed therein. The apparatus also includes a brake pin at least partially interposed within the first member. The brake pin includes a first annular surface and a second annular surface. The first annular surface defines, at least in part, a first brake chamber. The second annular surface defines, at least in part, a second brake chamber. A first fluid introduced into the first brake chamber will urge the brake pin in a first direction. A second fluid introduced into the second brake chamber will urge the brake pin generally in the first direction.

Abstract: A bicycle tire which has a raised, circumferential center rib and laterally opening grooves of scalene trapezoidal shape alternatively in the right and left sides of the center rib whereby the center rib defines a zigzag shape. Groups of polygonal, raised blocks are spaced from both sides of said center rib along the entire periphery of the tire. The bicycle tire provides an improved ride on level and uneven ground or roadways. The tire provides the advantages of both line and block pattern tread types in a single overall tread design.