Brake servo-motor
US3938424A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1973 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Nov 27, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/577
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A differential servo-motor mechanism in which manual force is supplemented by power assistance, comprising, a housing, a pressure responsive wall in the housing, valve means associated with said wall and being movable relative thereto to control the differential pressure acting on said wall, an output member, a resilient element for normally urging the wall toward its rest position, and reaction means characterized by a plurality of reaction elements arranged to provide the reaction means in the form of levers each having first, second, third and fourth points spaced radially inward from each other and engageable with the resilient element, the wall, the output member and the valve means respectively. The wall is initially movable to transmit force through the second point under association of the resilient element to the output member independently of the valve means, the reaction element being distorted during initial movement of the wall in response to resistance of the output member to engage the reaction means with the valve means and transmit movement of the latter and the wall after the initial movement of the wall to the output member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.