Patent US3707776A successfully refreshed from Google Patents.
US3707776A
Expired / Lapsed
US
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Control means for an inductance means
Assignee: Duracell Inc USA
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Filing: 1971-02-10
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Granted: 1973-01-02
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Expires: 1991-02-10
Abstract
Abstract A resonant control means causes the voltage and current of an inductance drive means to be out of phase with each other so as to prevent operation of the inductance drive means.
Inventors
- 👤 P Schmidgall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:03
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/22; D; D06; D06F; D06F34/00; D06F34/08; D06F2103/00; D06F2103/02; D06F2103/08; D06F2103/10; D06F2103/38; D06F2103/44; D06F2105/00; D06F2105/46; D06F2105/62; D06F34/14; D06F34/18; D06F58/00; D06F58/32; D06F58/34; D06F58/36; D06F58/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
In combination, a motor driven dryer, a synchronous motor and cam programming means responsive to said synchronous motor, said cam programming means in cooperation with switch means selectively energizing and de-energizing said dryer motor, and an electrical circuit comprising: a. terminal means connecting said electrical circuit to an alternating current power source, b. resonant means including said synchronous motor, c. electrical current phase control means cooperating with said resonant means including sensing means responsive to an operating condition of said Dryer, energizing said electrical current phase control means energizing said resonant means and causing the voltage-current phase relationship of said synchronous motor to be out of phase relation to each other such that said synchronous motor does not operate.
Claim 2
Dependent Claim
119 words
In combination, a motor driven dryer, a synchronous motor and cam programming means responsive to said synchronous motor, said cam programming means in cooperation with switch means selectively energizing and de-energizing said dryer motor, and an electrical circuit comprising: a. terminal means connecting said electrical circuit to an alternating current power source, b. resonant means including said synchronous motor, c. electrical current phase control means cooperating with said resonant means including sensing means responsive to an operating condition of said Dryer, energizing said electrical current phase control means energizing said resonant means and causing the voltage-current phase relationship of said synchronous motor to be out of phase relation to each other such that said synchronous motor does not operate.
Claim 3
Dependent Claim
45 words
The combination according to claim 14 wherein said resonant means further includes at least two capacitors connected in series between said terminal means, said synchronous motor connected in parallel with one of said capacitors and a control means connected in series with said synchronous motor.
Claim 4
Dependent Claim
13 words
The combination according to claim 2 wherein said control means is a diode.
Claim 5
Dependent Claim
30 words
The combination according to claim 14 wherein said electrical current phase control means includes a switching means, a biasing means, said sensing means regulating the voltage to said switching means.
Claim 6
Dependent Claim
32 words
The combination according to claim 4 wherein said sensing means includes electrode means disposed in a drum of said clothes dryer and a current limiting means in series with said electrode means.
Claim 7
Dependent Claim
31 words
The combination according to claim 4 wherein said biasing means includes a series combination of resistors, diode means and trigger means in combiantion. with a capacitor to activate said trigger means.
Claim 8
Dependent Claim
14 words
The combination according to claim 6 wherein said trigger means includes a neon light.
Claim 9
Dependent Claim
15 words
The combination according to claim 4 wherein said switching means includes a silicon controlled rectifier.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |