Patent US1350439A successfully refreshed from Google Patents.
Patent US3863047A successfully refreshed from Google Patents.
US3863047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cigarette lighter
Assignee: Tokai Rika Co Ltd
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Filing: 1973-11-12
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Granted: 1975-01-28
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Expires: 1993-11-12
Abstract
Abstract An electric cigarette-lighter of the plug-in type particularly designed to be fixedly mounted in an automobile for example, includes a heat sensing bimetallic element disposed adjacent the bimetal contact maker with one end being permanently connected to the lighter case. The free end of the bimetallic element is adapted, through its bimetallic action, for contact with the terminal to short-circuit the main heater circuit on the side of the terminal for the prevention of any prohibitive overheating, when such overheating by the heater occurs due to working failures of the associated parts.
Inventors
- 👤 Toshio Mase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:06
CPC Classifications
F; F23; F23Q; F23Q7/00; B; B60; B60N; B60N3/00; B60N3/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
236 words
An electric cigarette-lighter comprising a lighter case, a terminal disposed in and electrically insulated from said lighter case, a fuse electrically connected to the lighter case, a bimetal contact maker located within said lighter case and electrically connected to the terminal, a removable lighter plug carrying a heater unit at its inner end, said lighter plug being adapted for slidable insertion into the lighter case to cause the heater unit to be fit engaged by the bimetal contact maker to complete an electrical circuit to said heater unit, resilient meaNs urging said lighter plug away from said bimetal contact maker when said heater unit is engaged by said contact maker, said bimetal contact maker being responsive to the temperature of said heater unit and being operative to flex away from said heater unit when said heater unit reaches a predetermined temperature to permit said resilient means to return the lighter plug to a rest position and thereby break said circuit, and means for protecting said lighter against overheating comprising a heat sensing bimetallic element located adjacent the bimetal contact maker, one end of said element being in permanent electrical connection with said lighter case, the other end of said element being free to flex and being normally located in spaced relation to said terminal, said free end being positioned to contact said terminal when said element is flexed by an overheat temperature from said heater unit.
Claim 2
Dependent Claim
236 words
An electric cigarette-lighter comprising a lighter case, a terminal disposed in and electrically insulated from said lighter case, a fuse electrically connected to the lighter case, a bimetal contact maker located within said lighter case and electrically connected to the terminal, a removable lighter plug carrying a heater unit at its inner end, said lighter plug being adapted for slidable insertion into the lighter case to cause the heater unit to be fit engaged by the bimetal contact maker to complete an electrical circuit to said heater unit, resilient meaNs urging said lighter plug away from said bimetal contact maker when said heater unit is engaged by said contact maker, said bimetal contact maker being responsive to the temperature of said heater unit and being operative to flex away from said heater unit when said heater unit reaches a predetermined temperature to permit said resilient means to return the lighter plug to a rest position and thereby break said circuit, and means for protecting said lighter against overheating comprising a heat sensing bimetallic element located adjacent the bimetal contact maker, one end of said element being in permanent electrical connection with said lighter case, the other end of said element being free to flex and being normally located in spaced relation to said terminal, said free end being positioned to contact said terminal when said element is flexed by an overheat temperature from said heater unit.
Claim 3
Dependent Claim
44 words
The electric cigarette-lighter of claim 1, in which said terminal comprises an input terminal rod, and a short circuit plate mounted on said rod, said heat sensing bimetallic element having a bent end which is disposed in facing relation to the short circuit plate.
Claim 4
Dependent Claim
193 words
An electric cigarette-lighter comprising a lighter case, a terminal disposed in and electrically insulated from said lighter case, a fuse electrically connected to the lighter case, a bimetal contact maker connected to the terminal, and a lighter plug carrying a heater case at its inner end, said lighter plug being adapted for slidable insertion into the lighter case to move the heater case into fit engagement with the bimetal contact maker to complete an energization circuit to the heater element in the heater case, resilient means for returning said lighter plug to its rest position when said fit engagement is released by movement of said bimetal contact maker away from said heater case in response to a predetermined increase in the temperature of said heater case, and means for preventing overheating of said heater case comprising a heat sensing bimetallic element located adjacent said bimetal contact maker, one end of said heat sensing element being in permanent electrical connection with the terminal, the other end of said heat sensing element being free to bend and being located to contact the lighter case when the heat sensing element is overheated by the heater element.
Claim 5
Dependent Claim
193 words
An electric cigarette-lighter comprising a lighter case, a terminal disposed in and electrically insulated from said lighter case, a fuse electrically connected to the lighter case, a bimetal contact maker connected to the terminal, and a lighter plug carrying a heater case at its inner end, said lighter plug being adapted for slidable insertion into the lighter case to move the heater case into fit engagement with the bimetal contact maker to complete an energization circuit to the heater element in the heater case, resilient means for returning said lighter plug to its rest position when said fit engagement is released by movement of said bimetal contact maker away from said heater case in response to a predetermined increase in the temperature of said heater case, and means for preventing overheating of said heater case comprising a heat sensing bimetallic element located adjacent said bimetal contact maker, one end of said heat sensing element being in permanent electrical connection with the terminal, the other end of said heat sensing element being free to bend and being located to contact the lighter case when the heat sensing element is overheated by the heater element.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |