Timer having a variable operation period
US3937910A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1974 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | Apr 16, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H19/183
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A timer operative by means of a clock mechanism and having a variable operation period, wherein a main cam plate and a subsidiary cam plate are mounted coaxially on a common shaft so that they are rotatable relative to each other, each of said main and subsidiary cam plates having recessed peripheral portions and protruded peripheral portions. A single operation lever pressingly bears against the peripheral portions of said main and subsidiary cam plates so that, when the recessed peripheral portions of said main and subsidiary cam plates are brought into alignment with each other, the operation lever can drop into said aligned recessed peripheral portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.