Brake actuator
US6405635B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Nov 24, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/083
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is an improved secure coupling for vehicle brake actuator units that allows for a stronger and more efficient units having the same or smaller overall profile. The coupling is used between the housing cup of either a service brake actuator or an emergency brake actuator, or both, and a corresponding adaptor where the housing cup(s) and adaptor are made of dissimilar metals. In the coupling, the cylindrical wall of the housing cup is substantially vertical, and the corresponding annular edges of the adaptor cup are provided with a uniquely shaped engagement structure. This structure allows the edges of the elastomeric diaphragm deployed in the actuator to extend away from the coupling at a substantially vertical angle, making available more surface area of the diaphragm to press against a pressure-transmitting plate inside. This allows the brake actuator unit to transmit more force, and/or to employ a stronger emergency brake spring, without increasing the size of the unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.