Over-torque break away rotational coupling and a method of assembling same
US7331873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Oct 18, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D7/025
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In order to prevent damage to a drive component, fail safe devices are often used to break a rotational coupling between an apparatus, such as a pump, and the drive component, such as a crank shaft of an engine, in the event of the apparatus seizing. In order to break the coupling between a drive component and an apparatus, the rotational coupling includes a coupler that is operable to rotate in a first direction attached to a shaft via a threaded fastener. A predetermined break away torque is set by tightening the threaded fastener in a direction opposite than the first direction with a predetermined tightening torque. A torque transmission interface includes opposing surfaces of the coupler and the shaft that remain fixed relative to one another below a predetermined break away torque and move relative to one another above the predetermined break away torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.