Invention Grant
- Patent Title: Hybrid hydrostatic-direct drive transmission
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Application No.: US14962795Application Date: 2015-12-08
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Publication No.: US09605756B1Publication Date: 2017-03-28
- Inventor: Sudarshan Maiyur , Paul Dvorak
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Miller, Matthias & Hull
- Main IPC: F16H47/04
- IPC: F16H47/04 ; F16H61/70 ; F16H47/02 ; B60K6/12 ; E02F3/76 ; E02F9/22 ; E02F9/20 ; F16D48/06

Abstract:
A hybrid hydrostatic-direct drive transmission configured to transmit power from a power source to a power output of a machine operating at low, intermediate, and high speed ranges is described. The hybrid hydrostatic-direct drive transmission may comprise a hydrostatic transmission portion including a first hydrostatic driveline having a first hydrostatic motor, and a second hydrostatic driveline having a second hydrostatic motor. The hybrid hydrostatic-direct drive transmission may further comprise a direct drive transmission. The hydrostatic transmission portion may operate alone to transmit power from the power source to the power output at the low speed range, and the direct drive transmission portion may operate alone to transmit power from the power source to the power output at the high speed range.
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