Patent Number: 6,332,317

Title: Bypass for hydrostatic transmission

Abstract: A bypass mechanism is provided for use in a hydrostatic transmission, to enable the user to open or close a bypass between the hydraulic circuit of the transmission and a sump. The invention also comprises a safety mechanism to prevent excessive freewheeling of the vehicle by providing a plate or other bypass mechanism which engages a valve. The plate or other mechanism is moveable between a first position where the valve opens the hydraulic circuit to the sump and a second position where the valve closes the hydraulic circuit, and a spring mechanism enables the valve to override the bypass mechanism and force the circuit closed under excessive pressure.

Inventors: Hauser; Raymond (Sullivan, IL), Holder; Lonnie E. (Sullivan, IL)

Assignee: Hydro-Gear Limited Partnership

International Classification: F16H 61/40 (20060101); F16H 61/42 (20060101); F16D 031/02 ()

Expiration Date: 12/25/2018