Push button safety switch
US4839478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Feb 19, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/0226
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A push button safety switch. A pair of switch terminals are mounted within a housing which also carries a plunger for movement relative to the housing. The plunger is biased for movement along a path of travel by a compressed spring. A push button actuator has a knob for contact by user and a plunger actuator carried by the knob. The actuator also defines a stem portion to support a tether clip coupled to the boat operator. The boat motor ignition circuit is electrically connected to the switch terminals and the motor can be de-activated by either user contact with the knob or through movement of the plunger initiated by separation of the tether clip from the push button actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.