Mechanical light switch timer
US4021626A · kind A · utility
Inventor
Key dates
| Filing date | Jul 25, 1975 |
| Grant date | May 3, 1977 |
| Priority date | — |
| Expiry date | Jul 25, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H43/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch articulating device in combination with a modified conventional timer, the device including a bistable auxiliary switch lever connected to a switch engaging shuttle bracket, the switch lever and the bracket being retained in a housing adapted for installation over a wall switch. The conventional mechanical timer is mounted on the exterior of the housing and is modified to provide a timer shaft attached to a cam and extending into the interior of the housing. The cam is aligned to oppose one end of rocker arm, which at the other end articulates, through a push plate, a bellcrank attached to the switch lever. In this manner the switch lever can be either articulated by the timer or can be manually controlled to operate the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.