Wedge-type actuator for actuating drum brakes
US5103944A · kind A · utility
8Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1988 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Dec 20, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18992
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A wedge-type actuator for actuating drum brakes including guide rollers positioned between the wedge and a plunger that contacts the leading brake shoe. The guide rollers are carried between a guiding surface on the wedge and a guiding surface in the housing, to take up the reaction forces caused by the larger actuation forces needed to operate the trailing brake shoe. The disclosed arrangement provides more even braking forces, and thereby results in more even brake shoe wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.