F - Mech Eng,Light,Heat,Weapons – 23 – Q
Patent
F - Mech Eng,Light,Heat,Weapons
23
Q
327/120
F23Q 7/00 (2006.01)
Patent
CA 1116249
ABSTRACT A manual electric cigar lighter for automobiles and the like, comprising holder device presenting an outward- ly facing socket, and a unique ignitor plug receivable in the socket. Disposed at the inner end of the plug is a heat- ing 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 on the plug to close 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 plus, engageable with one of the switch parts and always normally lying in a closed-circuit position when cold. Following initial actuation of the manually oper- able part, the member receives radiant heat from the heating element, and snaps to a circuit-opening position to thereby interrupt the lighter circuit and de-energize the element after useful incandescence has been reached. Central portions of the bimetallic member are free and not attached anywhere to any parts of the plug, but instead are merely disposed 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 ad- vantage of the present construction over many-of the devices of the prior art is that there are eliminated problems pre- viously associated with the usual fastenings made to the bi- metallic member, such as securing a contact to the member, etc. An especially simple arrangement wherein a spring is employed to secure the member in its operative position, re- sults in improved reliability of operation, and reduced manu- facturing cost.
319227
Horwitt Laurence G.
Mattis Donald J.
Smart & Biggar
Sun Chemical Corporation
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