F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 39/04 (2006.01) B60K 17/10 (2006.01) F16H 39/14 (2006.01)
Patent
CA 2383680
A hydrostatic transmission including a fluid motor and a variable displacement fluid pump in fluid communication with the fluid motor and having a first and a second, much greater, fluid displacement rate. The pump is mounted on a block having a cylindrical surface, a passage through which fluid flows from the pump to the motor, and a fluid bleed hole extending from the passage to the cylindrical surface. The passage and a sump external to the pump are in fluid communication through the bleed hole and the void of an annular element disposed about and in sliding contact with the cylindrical surface when the pump is operating at its first rate and the annular element is in a first position. The bleed hole and the sump are substantially out of fluid communication when the pump is operating at its second rate and the annular element is in a second position.
Sim & Mcburney
Tecumseh Products Company
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