Magnet switch for starter
US5525947A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H50/543
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A magnet switch for starter which controls electric power supply to a motor in two steps is disclosed. The magnet switch has a fixed contact connected to a battery, an exication coil and a plunger. On the plunger, a first movable contact, a second movable contact and an elastic resistor member are coupled. When the plunger is attracted by the coil, the secont movable contact first contacts the fixed contact so that the motor rotates at a low speed with electric power from the battery supplied through the elastic resistor member. When the plunger is further attracted, the first movable contact contacts the fixed contact so that the motor rotates at a higher speed with the electric power without passing through the eleastic resistor member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.