Microwave oven with torsion bar hinge
US4088861A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Mar 18, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/6447
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to hinged supports using torsion bars for the doors of microwave ovens. For light-weight doors, the torsion bars extend beyond the sides of the doors and interlock with the oven structure to constitute the sole supporting means. For heavier doors, the torsion bars are provided with pivot shaft extensions mounted in bearings in the doors, which interlock with the oven structure. The torsion bars are preloaded to bias the doors closed in the light-weight door constructions, and operate in all cases to reduce the dead weight of the doors when in their open, horizontal positions. The side extensions interlockingly engage brackets in the oven structure aided by the weight of the doors, and permit the doors to be lifted readily therefrom. Although the invention is especially useful and is herein particularly described in connection with microwave ovens, no unnecessary limitation thereto is intended because this invention has application also to other appliances such as conventional ovens, dishwashers, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.