F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 47/00 (2006.01) B60K 17/10 (2006.01)
Patent
CA 2070716
A hydrostatic transaxle having a hydrostatic transmission includes a plate-like dump valve disposed between the transaxle housing or in a recess formed therein, adjacent a fluid conduit that connects the pump and motor of the transmission, the dump valve having fingers which unseat valves in the conduit to relief pressure therein. A rod having an offset portion extends through a bore in the dump valve, the rotation of the rod and offset portion urges the fingers of the plate-like dump valve towards or away from the conduit valves. The settling chamber disposed within the transmission includes protrusions upwardly projecting from the bottom of the chamber which trap particulates suspended in the hydraulic fluid that circulate through the system. A magnet is likewise disposed in the settling chamber adjacent the protrusions for attracting and holding magnetic particles and debris circulated by the hydraulic fluid. A double lip, W-shaped seal is radially provided on the output shaft connecting the transmission motor located in the transmission chamber with the gearing located in the gearing chamber that prevents hydraulic fluid and particulates from the gearing chamber to mix with the hydraulic fluid from the transmission chamber.
Jolliff Norman E.
Weirich Michael P.
Ridout & Maybee Llp
Tecumseh Products Company
LandOfFree
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