The patent relates to a positive position interlock concealment shutter for preventing the accidential or intentional actuation of a concealed interlock switch in a microwave oven when its door is in the open position. It comprises a moveable metal plate having an aperture therethrough which can be aligned with the conventional aperture in the oven face. The position of the plate and its aperture is controlled by a door guide arm which includes a camming surface. The slope of the cam surface is designed to allow sufficient door movement for the latch pawl or the door pin to clear the shutter aperture during door opening before shutter closing occurs. The cam surface is such that the shutter closes before access to the interlock becomes possible. The return of the shutter to the open position upon the closing of the door may be spring controlled.
Positive Position Interlock Concealment Shutter
1974
5 pages
Report
No indication
English
Positive Position Interlock Concealment Shutter
NTIS | 1974
|Interlock Operated Safety Shutter for Lasers
NTIS | 1976
|Brake transmission shift interlock inhibit pin position detection
European Patent Office | 2022
|