De-stroking dual hydrostatic pump
US7353651B2 · kind B2 · utility
19Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Jun 13, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D11/006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A zero turning radius mower has a dual hydrostatic pump with right and left pump arms. A linkage between the pump arms and a pair of control levers destrokes both sides of the pump simultaneously if engine speed drops below a specified value. The linkage allows each pump arm to have a first stroke range if the engine powering the pump is above the specified value, and a second smaller stroke range if the engine powering the pump is below the specified value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.