Single piston activation of a planetary transmission
US5026334A · kind A · utility
28Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Apr 3, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H3/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A single piston is used to activate the brake or clutch of a planetary transmission. The piston is spring-biased to engage one component and disengage the other, and hydraulically activated to disengage the first component and engage the second. An annular plate preferably is provided extending between the brake and the clutch, with the brake on one side of the plate and the clutch on the other. A spring then biases the annular plate towards one of the control components and away from the other, while a hydraulic cylinder is provided to press the plate away from the first component and towards the second.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.