Manually operated control
US7528331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Feb 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2019/146
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control includes a drum (36) that is rotatably mounted in a housing (22), and includes devices for generating signals to indicate the direction in which the drum is turning and for generating signals to indicate which end of the drum is depressed. A gear (100) is fixed to the drum, and as the drum rotates a deflectable contact element (T6) is repeatedly deflected by teeth of the gear to repeatedly engage a stationary contact (T4, T5). The deflectable contact element is in the form of a wire with a deflectable part (104) deflected by gear teeth, a mount part (110) mounted on the housing, and a contacting part (108) that repeatedly engages the stationary contact, all being part of the wire. Depression of one end of the drum results in depression of a corresponding end of a sheet metal trigger member (30) that is free to snap down against a stationary contact (T2, T3). Stationary contacts that are repeatedly contacted, are in the form of wires with fixed first end and with free or fixed second ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.