Limit switches
US6664487B2 · kind B2 · utility
0Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2002 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jun 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2021/287
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A limit switch has switch areas and a partition wall in between in a switch case for containing switch element units separately and independently. An inner case includes covers for sealing the switch areas. For improving rigidity, a switch unit and a head unit which operates the switch unit are connected by means of a protrusion on one of them and an indentation on the other of them, the protrusion and the indentation being engaged in an embracing fashion for strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.