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US 4,345,233 AGranted
Manual switch with timed electro-thermal latch release
AssigneeEaton Corporation
InventorAlan A. Matthies
Life of this patent
Estimating the term…
Abstract
A momentary ON rocker button switch (2) with bimetal detent latching (36) in the ON position and releasable by a heater (42) wound on the bimetal (36), the heater (42) being controlled through the output of a solid state timing circuit (TC, R1, C1) housed in the switch which is energized upon closure of the switch contacts (14a, 18).
Claims6
A manually operable electric switch having a timed, electro-thermal latch release comprising, in combination:
- an insulating housing;
- switch contacts mounted in said housing;
- operator means mounted in said housing and manually operable to actuate said contacts between open and closed circuit positions;
- means biasing said contacts to a normally open circuit position;
- electro-thermal latch means mounted in said housing and operable in a de-energized condition to restrain said operator means in a position effecting a closed circuit position of said contacts;
- and
- electric timing means mounted in said housing energizable upon closure of said switch contacts to initiate a timing period and operable upon completion of said timing period to energize said electro-thermal latch means to release said operator means and causing said switch contacts to be opened.
4 more elements
Dependencies are inferred from the claim text.