Electrical switch construction and method of making the same

Details Electrical switch construction and method of making the same Electrical switch construction and method of making the same

1985-01-24

1986-12-30

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337364, 337368, H01H 3752

Patent

active

046332111

ABSTRACT:
A switch construction having a support carrying a pair of spaced apart first and second fixed contacts and a movable switch blade unit carrying a contact unit for being disposed in contact with the first fixed contact and out of contact with the second fixed contact when the switch blade unit is in a first position thereof and for being disposed in contact with the second fixed contact and out of contact with the first fixed contact when the switch blade unit is in a second position thereof. The switch blade unit comprises a first flexible switch blade having opposed ends one of which is secured to the support and the other of which carries a first part of the contact unit for making or breaking contact with the first fixed contact and a second flexible switch blade having opposed ends one of which is secured to the first switch blade to be carried thereby and the other of which is spaced from the other end of the first switch blade and carries a second part of the contact unit for making or breaking contact with the second fixed contact. The first switch blade having an abutment for engaging the second switch blade with an impact force when the switch blade unit is being moved from the second position thereof to the first position thereof and a contact welded condition exists between the second fixed contact and the second part of the contact unit.

REFERENCES:
patent: 847981 (1907-03-01), Brown
patent: 1269917 (1918-06-01), Field
patent: 3047771 (1962-07-01), Clark
patent: 3435189 (1969-03-01), Manecke
patent: 3573700 (1971-04-01), Schmitt
patent: 3602863 (1971-08-01), Place
patent: 3885222 (1975-05-01), Manecke
patent: 4365228 (1982-12-01), Rowley

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