US3575681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote fuse destruction device
Assignee: Motorola Solutions Inc
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Filing: 1969-06-11
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Granted: 1971-04-20
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Expires: 1989-06-11
Abstract
Abstract The combination of a fuse and a means which is controllable from a distance, as by radio transmission and reception, to open a circuit by destroying the fuse.
Inventors
- 👤 Alan Samuel Nusbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:37
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/0241; H01H85/46; H01H2085/466
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A fuse comprising: a fuse link having a meltable portion, support means fixed to said link and extending in the vicinity of said meltable portion, a semiconductor switch having two main electrodes and mounted on said support means and having one main electrode connected to said link at one side of said meltable portion, an electrically controlled heat producing means having a terminal mounted on said support means and facing said meltable portion, and the other main electrode of said semiconductor switch being connected to a terminal of said electrically controlled heat producing means.
Claim 2
Dependent Claim
94 words
A fuse comprising: a fuse link having a meltable portion, support means fixed to said link and extending in the vicinity of said meltable portion, a semiconductor switch having two main electrodes and mounted on said support means and having one main electrode connected to said link at one side of said meltable portion, an electrically controlled heat producing means having a terminal mounted on said support means and facing said meltable portion, and the other main electrode of said semiconductor switch being connected to a terminal of said electrically controlled heat producing means.
Claim 3
Dependent Claim
70 words
A fuse comprising: a fuse link having a meltable portion, a bridge means bridging said meltable portion, a silicon-controlled rectifier mounted on said bridge portion and having a main electrode connected to said link at one side of said meltable portion, a squib mounted on said bridge and facing said meltable portion, and the other main electrode of the said silicon-controlled rectifier being connected to a terminal of said squib.
Claim 4
Dependent Claim
70 words
A fuse comprising: a fuse link having a meltable portion, a bridge means bridging said meltable portion, a silicon-controlled rectifier mounted on said bridge portion and having a main electrode connected to said link at one side of said meltable portion, a squib mounted on said bridge and facing said meltable portion, and the other main electrode of the said silicon-controlled rectifier being connected to a terminal of said squib.
Claim 5
Dependent Claim
25 words
The invention as expressed in claim 2 in which said meltable portion, said bridge means and said silicon-controlled rectifier are mounted in a single container.
Claim 6
Dependent Claim
24 words
The invention as expressed in claim 3 in which an exothermic material is provided in contact with said squib and also in said container.
Claim 7
Dependent Claim
34 words
The invention as expressed in claim 3 in which a connection to the other terminal of the squib and the connection to the other main electrode of said silicon-controlled rectifier extends through said container.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |