US3964010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simple, small-sized fuse
Assignee: Individual
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Filing: 1974-10-08
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Granted: 1976-06-15
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Expires: 1994-10-08
Abstract
Abstract A small-sized fuse comprising lead wires supported in parallel by a heat-resisting and insulating support, a conductor bridging said lead wires with its both ends fixed to said lead wires by alloy of low fusing point, a heat-resisting elastic substance pressed against said conductor so that said conductor is urged to separate from said lead wires upon fusing of said alloy of low fusing point and a frame in which insulating filler such as insulating grease is filled.
Inventors
- 👤 Okazaki Tasuku
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A fuse comprising: a casing frame having one open side; a heat resistant and insulative support base fitted into said open side; a plurality of parallel lead wires fitted through said support base and held thereby in a stationary position with one end of each wire inside said casing and one end exposed outside of said casing; conductive bridging means between said parallel wires for conductively connecting said lead wires to each other; low temperature fusing means at the connecting points of said bridging means and said lead wires for fusibly joining said bridging means to said wires; heat resistive biasing means fitted into said support base and biased against said bridging means for urging said bridging means away from said wires when said low temperature fusing means is fused; and an anti-oxidant insulative filler filling the open space within said casing and surrounding said bridging means, fusing and biasing means.
Claim 2
Dependent Claim
151 words
A fuse comprising: a casing frame having one open side; a heat resistant and insulative support base fitted into said open side; a plurality of parallel lead wires fitted through said support base and held thereby in a stationary position with one end of each wire inside said casing and one end exposed outside of said casing; conductive bridging means between said parallel wires for conductively connecting said lead wires to each other; low temperature fusing means at the connecting points of said bridging means and said lead wires for fusibly joining said bridging means to said wires; heat resistive biasing means fitted into said support base and biased against said bridging means for urging said bridging means away from said wires when said low temperature fusing means is fused; and an anti-oxidant insulative filler filling the open space within said casing and surrounding said bridging means, fusing and biasing means.
Claim 3
Dependent Claim
15 words
A fuse as claimed in claim 1 wherein said filler is comprised of insulating grease.
Claim 4
Dependent Claim
20 words
A fuse as claimed in claim 1 wherein said biasing means is a coiled spring forced against said bridging means.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |