Strain relief device for an electrical supply line
US4323725A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 1980 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/3947
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A strain relief device, especially for power tools, has a pin upon which is pivotally mounted a clamping member with a spirally curved rough clamping surface which coacts with a second clamping surface. An electrical line is inserted between these surfaces and the clamping member is swung thereby applying a clamping force to the electrical line. When strains are applied to the line, the clamping member provides an increased clamping force by swiveling so that a section of the member of larger diameter presses the line against the second clamping surface. A lock mechanism is also provided to prevent the electrical line from being pushed further into the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.