H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/118
H01H 71/12 (2006.01) H01H 39/00 (2006.01) H01H 71/04 (2006.01) H01H 85/00 (2006.01) H01H 3/60 (2006.01) H01H 9/10 (2006.01) H01H 9/16 (2006.01)
Patent
CA 1196941
ABSTRACT OF THE DISCLOSURE A brake and operation indicator for a movable contact of a switch, the movable contact being rapidly moved by ignition of a power cartridge to open the switch. A thin-walled sleeve is positioned conformally about a movable pin, a portion of which is lightly held in a bore of an end member of a housing for the switch. The sleeve is shorter than the distance between a head on the pin and the end member. The bore is normally closed by a thin membrane. When the contact is moved, it ultimately abuts the head, moving the pin through the membrane to a position beyond the end member where a portion of the pin is visible. Movement of the pin also collapses the sleeve between the head and the end member in accordion-like fashion to dissipate the kinetic energy of and stop the contact. The presence of the pin within the sleeve renders the collapse controlled, uniform, and efficient. The visible portion of the pin informs that the switch is open.
439036
Jarosz John M.
Panas William R.
Osler Hoskin & Harcourt Llp
S&c Electric Company
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