Electro-mechanical interlock and module system for lawn mower or other electrical device
US5085043A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Jun 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electro-mechanical interlock and module system for an electrically powered device such as a cordless, electric lawn mower that includes a normally open interlock switch for controlling the enabling of the power circuit for the lawn mower. A key member is adapted for insertion into a specially configured opening in the mower housing to actuate and close the interlock switch. With the interlock switch closed, energization of the motor is controlled by a separate handle-mounted ON/OFF switch in a conventional manner. In addition, a modular assembly technique is disclosed which facilitates ease of manufacturing while assuring proper alignment between the various components of the interlock system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.