Patent ID: 7225618
Filing Date: 2007-06-05
Classification: B60B,B60K,F16H,Y10T

Abstract:
1. A hydrostatic transmission comprising: a housing including two divisional housing parts separably joined to each other through a joint surface; a center section fixed to one of the divisional housing parts, wherein the center section includes a first surface and a second surface separably fixed to each other; a first cylinder block disposed in the housing, the first cylinder block including opposite end surfaces, wherein the first cylinder block is rotatably fitted at one of the opposite end surfaces thereof to the first surface of the center section so that a rotary axis of the first cylinder block is disposed perpendicular to the joint surface of the housing, and wherein pistons are reciprocally slidably fitted into the first cylinder block and project outward from the other of the opposite end surfaces of the first cylinder block; and a second cylinder block disposed in the housing, the second cylinder block including opposite end surfaces, wherein the second cylinder block is rotatably fitted at one of the opposite end surfaces thereof to the second surface of the center section so that a rotary axis of the second cylinder block is disposed in parallel to the joint surface of the housing, wherein pistons are reciprocally slidably fitted into the second cylinder block and project outward from the other of the opposite end surfaces of the second cylinder block, and wherein at least a part of the first surface of the center section is disposed between planes including the respective opposite end surfaces of the second cylinder block fitted to the center section.