F - Mech Eng,Light,Heat,Weapons – 23 – Q
Patent
F - Mech Eng,Light,Heat,Weapons
23
Q
327/120
F23Q 7/00 (2006.01) B60N 3/14 (2006.01)
Patent
CA 1115786
ABSTRACT An automatic electric cigar lighter comprising a holder device presenting an outwardly facing socket, and a unique ignitor plug receivable in the socket. Disposed at the inner end of the plug is a heating element which is electrically connected in circuit with a heat-responsive switch that is also carried by the plug. The socket in addition to its grounding circuit has a "hot" contact which is engageable with a cooperable contact of the plug to effect the circuit through the heating element. The plug comprises a manually operable part by which the heat-responsive switch can be closed, thereby to complete the heating circuit through the element. A bimetallic member is also carried by the plug, engageable with one of the switch parts and normally lying in a circuit-opening position wherein it maintains the switch parts separated, and from which it can be shifted to a closed- circuit position. In both positions it can receive radiant heat from the heating element, and when in the closed-circuit position it can snap to the circuit opening position to effect opening of the lighter circuit and de-energization of the heat- ing element after useful incandescence has been reached. Cen- tral portions of the bimetallic member are free and not attached anywhere to any parts of the plug, but instead are merely dis- posed in close proximity to one of the switch parts, such that the member can quickly effect opening of the switch without need for mechanical securement of its central portions. The advan- tage of this construction over the devices of the prior art is that there are eliminated problems previously associated with the usual fastenings made to a bimetallic member, such as securing a contact to the member, etc. Improved reliability and operation, together with faster operation, are thus realized.
311127
Horwitt Laurence G.
Mattis Donald J.
Smart & Biggar
Sun Chemical Corporation
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