Drum-in-hat brake with reverse scissors actuator
US5529149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Nov 21, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/64
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The drum-in-hat assembly (10) comprises a disc brake (12) mounted slidably relative to a backing plate (18) which includes an opening (19) through which extends a reverse scissors actuator (40) for the drum brake (30) of the assembly (10). The drum brake (30) includes a pair of arcuate drum brake shoes (32, 34) supported relative to the backing plate (18), with the shoes (32, 34) having a pair of opposed brake shoe ends (36, 38) engaged by the actuator (40). The actuator (40) comprises a pair of levers (42, 46) pivotably attached to one another with each lever (42, 46) having a second lever end (48, 58) engaging a respective end (38, 36) of an associated brake shoe, wherein the second lever end (48, 58) has either a slot (49) or an edge (59) located laterally away from the other and engaging the associated brake shoe end (38, 36). The actuator (40) is free to float relative to the backing plate (18), and the levers (42, 46) are located within a housing (70) attached to the backing plate (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.