Thermal disconnect coupling
US4934977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1985 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Nov 7, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D11/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Dispersion of eutectic material (56) in a thermal disconnect coupling following thermal actuation is avoided by disposing the body (56) of eutectic material in a first axially opening cavity (40) in a driven shaft (24) having teeth (32) normally meshed with teeth (22) on a driving shaft (16). The first cavity (40) is closed by a wall (50) forming part of an output shaft (26) and the interface of the cavity (40) and the wall (50) is provided with seals (92, 94). The first cavity (40) is separated from a second cavity (42) in the driven shaft (24) by a perforated web (44, 46) and together with an element (60) supported by the output shaft (26) defines second chamber into which the body (56) may flow upon thermal actuation. The interface of the element (60) and the second cavity (42) is provided with seals (92, 94) to prevent the escape of eutectic material from the second chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.