Shoe-drum brakes for vehicles
US3973473A · kind A · utility
5Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Mar 26, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an hydraulic actuating assembly for a vehicle shoe-drum brake comprising first and second relatively slidable members, the first member is provided with a longitudinally extending bore which is closed at one end and in which works a portion of the second member, and a sealed hydraulic chamber is defined within the bore between the closed end of the first member and the second member. One of the members incorporates an inlet port for the chamber and a vent port is located in a portion of the wall of that member to provide an indication, by external leakage of hydraulic fluid, of failure of the sealing of the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.