Clutch and brake assembly for implement drive
US4221284A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Apr 3, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D13/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coil spring clutch connects a driving hub to a driven sleeve rotatable on the hub and the sleeve drives an output or second driven member through a torque limiting clutch. The spring is readily declutched by arresting rotation of its leading end, as by interposing a stop in the path of an out-turned tang on that end, and is re-engaged by releasing the leading end. Re-engagement is characteristically abrupt and harsh, and the torque-limiting clutch in series with the spring clutch limits torque stress on the spring so that the series assembly is usable in applications which would destroy the spring clutch alone. The torque-limiting clutch may be a spring-biased friction clutch. The driven members are desirably mounted on the driving hub in a compact unitary assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.