Mechanically actuated brake with automatic adjustment
US4844212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D65/565
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The mechanically actuated brake (10) with automatic adjustment comprises an integral support plate (20) having first (22) and second (24) axially extending support bars which position associated pairs of brake shoe ends (13, 15, 17, 19). The brake shoe ends (13, 15, 17, 19) are biased together by respective spring mechanisms (16, 18), and the shoes (12, 14) are captured between the support bars (22, 24) and shoe web rests (21). A pawl (60) is attached to one (12) of the brake shoes (12, 14) and is biased by a resilient member (70). The pawl (60) includes a protrusion (66) which slidably engages an axially extending angled ramp surface (25) of the second support bar (24). An end (64) of the pawl (60) engages an adjuster mechanism (50) located between the second pair (17, 19) of brake shoe ends (13, 15, 17, 19). The first pair (13, 15) of brake shoe ends has a mechanical actuator slide (30) disposed therebetween, the mechanical actuator slide (30) providing pivotable support for an actuator lever (40) which engages one (12) of the brake shoes (12, 14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.