Electricity: electrothermally or thermally actuated switches – Thermally actuated switches – With bimetallic element
Reexamination Certificate
2006-09-19
2006-09-19
Vortman, Anatoly (Department: 2835)
Electricity: electrothermally or thermally actuated switches
Thermally actuated switches
With bimetallic element
C337S362000, C337S365000
Reexamination Certificate
active
07109840
ABSTRACT:
A protector (10) particularly useful for wye-connected three phase electrical motors has a header (12) mounting first and second terminal pins (14) to which L-shaped pin heaters (16) are mounted along with stationary electrical contacts (16b). A generally U-shaped heater and support member (18) has two leg ends welded to the header intermediate to the terminal pins and a snap acting thermostatic disc (20a) is welded through a weld slug to the central portion of the heater and support member. First and second movable electrical contacts (20b) are mounted on the bottom surface of the thermostatic disc positioned to move into and out of engagement with respective stationary contacts upon snapping of the thermostatic disc from one dished configuration to an opposite dished configuration in dependence on temperature of the disc. A cover (24) is hermetically attached to the header and is provided with a force application location aligned with the weld slug which can be depressed against the weld slug and thereby adjust the operating temperature of the thermostatic disc.
REFERENCES:
patent: 2707738 (1955-05-01), Weissheimer et al.
patent: 2991341 (1961-07-01), Herman
patent: 3140370 (1964-07-01), Harper, Jr.
patent: 3330926 (1967-07-01), Beckmann
patent: 3470514 (1969-09-01), Harper, Jr.
patent: 3753195 (1973-08-01), Woods
patent: 3833873 (1974-09-01), Moksu
patent: 4236135 (1980-11-01), Holden
patent: 4237510 (1980-12-01), Thompson et al.
patent: 4287499 (1981-09-01), Pejouhy
patent: 4555686 (1985-11-01), Pejouhy et al.
patent: 4646195 (1987-02-01), Lisauskas
patent: 4866408 (1989-09-01), Petraitis et al.
patent: 5023744 (1991-06-01), Hofsass
patent: 5973587 (1999-10-01), Hofsass
patent: 6005471 (1999-12-01), Higashikata et al.
patent: 6054916 (2000-04-01), Hofsass
patent: 6639502 (2003-10-01), Herrick
patent: 6724293 (2004-04-01), Hofsass
patent: 2088132 (1982-06-01), None
Kohm Karl A.
Pisuk Michelle
Turner Derek H.
Baumann Russell E.
Sensata Technologies, Inc.
Vortman Anatoly
LandOfFree
Protector for electrical apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protector for electrical apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protector for electrical apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3577802