Device for detecting an applied compressive load
US3945704A · kind A · utility
Inventors
Key dates
| Filing date | Mar 28, 1974 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Mar 28, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R11/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A one-shot device for detecting the application of a compressive load of predetermined amount which includes a first and a second electrically conductive metallic member, each of which has a substantially planar face. The first member is made of a material which is harder and less ductile than the material of the second member. A brittle insulation layer is sandwiched between the faces. A wall recedes from the first face partially to define an open region adjacent to the first face. When the members are pressed toward one another under a load of said predetermined amount, the insulation layer fractures abruptly at the wall, and material of one of the members moves to make contact at the wall with the other member so as to signal application of the predetermined force. This change of conductive condition can be utilized to complete an electrical circuit for indication and control purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.