Bushing mounted stirrer shaft

Details Bushing mounted stirrer shaft Bushing mounted stirrer shaft

1981-06-19

1984-01-31

Envall, Jr., Roy N.

Electric heating

Metal heating

Of cylinders

219 1055D, 310 89, 310 90, H05B 674

Patent

active

044292040

ABSTRACT:
A seal for sealing a stirrer motor shaft in a microwave oven structure. The seal is provided by a bushing bearing journaling the motor shaft and receiving in a non-circular-hole in the wall of the cabinet defining the microwave oven cavity. The bushing is threaded and receives a threaded securing element cooperating with a shoulder on the bushing to clamp the bushing against the portion of the wall member of the cabinet defining the opening. The bushing is electrically connected to the wall member to define a ground for the motor shaft. The motor includes a housing secured to the bushing to be in spaced relationship to the cabinet wall.

REFERENCES:
patent: 2171988 (1939-09-01), Poole
patent: 2720601 (1955-10-01), Dean
patent: 3127494 (1964-03-01), Kellough et al.
patent: 3526737 (1970-09-01), Black
patent: 3872276 (1975-03-01), Corcoran et al.
patent: 3922050 (1975-11-01), Lettini et al.
patent: 4053730 (1977-10-01), Baron et al.
patent: 4252288 (1981-02-01), Behrendt
patent: 4296297 (1981-10-01), Miller
patent: 4335289 (1982-06-01), Smith
patent: 4343976 (1982-08-01), Nasretdin et al.
patent: 4357552 (1982-11-01), MacMillan

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