Mercury-wetted sealed contact switch

Details Mercury-wetted sealed contact switch Mercury-wetted sealed contact switch

H - Electricity

01

H

306/82

H01H 1/08 (2006.01) H01H 1/50 (2006.01) H01H 29/04 (2006.01)

Patent

CA 1095955

A. Tedeschi - Case 3 MERCURY-WETTED SEALED CONTACT SWITCH Abstract of the Disclosure The possibility of contact bounce in an electrical switch is minimized by transferring energy from an armature of the switch to a damping liquid. An arrangement for damping the armature by such a transfer is particularly suited for use with a mercury-wetted sealed contact switch. The switch includes first and second spaced terminals embedded at opposite ends of a cylindrical envelope. The armature is located in the space between the two terminals. It is hinged by a thin leaf spring at the first terminal and is normally positioned to form a gap with the second terminal. Operation of the switch to close and reopen the gap results from an application and a removal, respectively, of a magnetic field through the terminals and the armature. Mercury wets the contact points between the second terminal and the armature. The mercury is supplied from a pool located at the first terminal. To dampen the motion of the armature, a damping member is rigidly coupled to the armature and extends from the armature into the pool of mercury. -i-

299390

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