Hydraulic apparatus with return to neutral mechanism
US6782797B1 · kind B1 · utility
48Cited by
59References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2002 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/439
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control mechanism for a hydraulic drive apparatus such as a transaxle having a hydraulic pump and moveable swash plate mounted in a housing including a control arm for moving the swash plate between forward and reverse positions and a unidirectional return to neutral mechanism for biasing and returning the swash plate to a neutral position when the control arm is in one of the reverse or forward positions but not from the other position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.