US3728583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical fuse system
Assignee: Garrett Corp
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Filing: 1972-07-10
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Granted: 1973-04-17
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Expires: 1992-07-10
Abstract
Abstract An electrical fuse has a link with a notch or reduced section portion, adjacent which is a source of mechanical energy which is arranged to be energized from the charge on a capacitor by the closure of a switch, preferably a thyristor which is gated by a circuit means sensing the current flowing in the link.
Inventors
- 👤 A Wickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/02; H02H3/021; H01; H01H; H01H85/00; H01H85/02; H01H85/46; H01H2085/466
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
An electrical current interrupter comprising: a. a rupturable link fixedly supported at spaced apart terminals for connection in a current carrying circuit; b. means for sensing the current in said current carrying circuit to provide signal information; c. separative force means adjacent to said link to effect a rapid separative rupture of said link by the application to a surface portion of said link of a burst of force; and d. means coupled with said sensing means and said separative force means to effect an energization of said force means upon the advent of predetermined signal information from said sensing means.
Claim 2
Dependent Claim
101 words
An electrical current interrupter comprising: a. a rupturable link fixedly supported at spaced apart terminals for connection in a current carrying circuit; b. means for sensing the current in said current carrying circuit to provide signal information; c. separative force means adjacent to said link to effect a rapid separative rupture of said link by the application to a surface portion of said link of a burst of force; and d. means coupled with said sensing means and said separative force means to effect an energization of said force means upon the advent of predetermined signal information from said sensing means.
Claim 3
Dependent Claim
41 words
The interrupter of claim 1 in which the signal information provided by said sensing means varies with the magnitude of the current in said circuit, said force means being energized upon the advent of a predetermined magnitude of said circuit current.
Claim 4
Dependent Claim
21 words
The interrupter of claim 2 in which said coupling means comprises a capacitor, the discharge of which energizes said force means.
Claim 5
Dependent Claim
32 words
The interrupter of claim 3 in which said coupling means further comprises switch means in series with said capacitor, and said sensing means is coupled to said switch means for actuation thereof.
Claim 6
Dependent Claim
22 words
The interrupter of claim 4 in which said switch means compriSes a thyristor whose gate electrode is coupled to said sensing means.
Claim 7
Dependent Claim
15 words
The interrupter of claim 3 in which said force means comprises an electric fusee device.
Claim 8
Dependent Claim
14 words
The interrupter of claim 6 in which said rupturable link is a fuse link.
Claim 9
Dependent Claim
18 words
The interrupter of claim 1 in which said rupturable link has a reduced section adjacent said force means.
Claim 10
Dependent Claim
22 words
The interrupter of claim 3 in which said force means comprises electromagnetic conductor means adapted to react electromagnetically with said rupturable link.
References Cited (Backward Citations)
US3684923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |