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US 7,007,571 B1Granted
Hydrostatic transmission
AssigneeHydro-Gear Limited Partnership
InventorsHerb M. Poplawski, Thomas D. Wiley, John D. Schreier, Michael L. Bennett, Lonnie E. Holder, Ralph A. McClelland
Life of this patent
Estimating the term…
Abstract
A hydrostatic transmission mountable to a vehicle frame. The hydrostatic transmission is adapted to removeably receive an axle shaft. The hydrostatic transmission is also adapted to be mounted to at least one of two opposed side members of the vehicle frame. The opposed side members have openings through which the axel shaft passes. The vehicle may be a snow thrower.
Claims21
A vehicle comprising:
- a vehicle frame having at least one vertically-oriented side frame member;
- a transmission housing directly mounted to a vertical face of the at least one vertically-oriented side frame member;
- a hydrostatic transmission mounted in the transmission housing and comprising a hydraulic pump and hydraulic motor connected through a hydraulic circuit;
- and
- an axle shaft driven by the hydraulic motor and extending perpendicular to the at least one vertically-oriented side frame member;
- wherein the axle shaft extends through the at least one vertically-oriented side frame member.
3 more elements
A vehicle comprising:
- a vehicle frame having at least one vertically-oriented side frame member;
- a transmission housing directly mounted to a vertical face of the at least one vertically-oriented side frame member;
- an integrated hydrostatic transmission mounted in the transmission housing and comprising a hydraulic pump and a control mechanism for controlling the output of the hydraulic pump;
- a hydraulic motor mounted in the transmission housing and in fluid communication with the hydraulic pump;
- an axle shaft mounted in and extending from the transmission housing, the axle shaft being driven by the hydraulic motor and removably carried within the housing;
- and
- a sleeve piece carried by the transmission housing, the sleeve piece being driven by the hydraulic motor and releasably accepting and driving the axle shaft.
4 more elements
A vehicle comprising:
- a vehicle frame;
- a hydrostatic transmission mounted to the vehicle frame and driven by a transmission input shaft having an attached transmission pulley;
- an engine mounted to the vehicle frame and driving an output shaft having at least one output pulley;
- a belt connecting the output pulley to the transmission pulley;
- and
- a cooling fan mounted on the transmission input shaft, where the transmission input shaft extends through a loop created by the belt, whereby the cooling fan and transmission are on opposite sides of the belt.
3 more elements
Dependencies are inferred from the claim text.