Document Type and Number:
Japanese Patent JPH0449730
Kind Code:
B2
Abstract:
A constant load and constant contact force snap-action switch (Figure 1) having a normally-closed movable operate contact (18) on a flipper blade (20) which has a compression strip (20c) that snaps through an S-curvature to a reverse buckled state to trip the operate contact open. The flipper blade is coupled through an insulating cap (26) to the leaf spring mounted movable alarm contact (22) to close the latter at the same time. A return spring (36) biased reset lever (32) resets the operate contacts on depression down a first amount, opens the operate contact without closing the alarm contacts on depression down a second amount for stop purposes, and trips the operate contacts open on lifting upwards for test purposes. On reset, lost motion in the coupling cap (26b) knocks the alarm contact open if welded. A selector (38) is settable to select any of three functions for the reset lever, (1) reset-stop-test, (2) auto reset stop, or (3) reset test.
More Like This:
| JPS5329577 | SMALL SWITCH |
| JP3652254 | KEY SWITCH |
| JPH11144558 | DOME CONTACT FOR SWITCH |
Inventors:
KENESU AASAA FUOOSERU
EDOWAADO AASAA MARONEN
EDOWAADO AASAA MARONEN
Application Number:
JP25248683A
Publication Date:
August 12, 1992
Filing Date:
December 27, 1983
Export Citation:
Assignee:
EATON CORP
International Classes:
H01H13/36; H01H5/18; H01H13/12
Next Patent: AUTOMATIC FRAME CLOCK OSCILLATION SYSTEM