US3629688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverters
Assignee: Individual
•
Filing: 1970-07-09
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Granted: 1971-12-21
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Expires: 1990-07-09
Abstract
Abstract A unique device for changing direct current to alternating current. The ''''heart'''' of the device is a commutatorlike switch which provides the alternating current by continuously switching the direct current. The switch can also ''''generate'''' power using a piezo-electrical effect.
Inventors
- 👤 Irving E Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:31
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/20; H02M1/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
An inverter for changing direct voltage to alternatingcurrent voltage, said inverter comprising: a commutator switching assembly having a segmented member, said assembly including ring means for receiving direct current voltage from a direct current power supply, means for connecting said ring means to said segmented member to cause alternate ones of said segments to be positively and negatively polarized, means for causing said commutator switching assembly including said segmented member to rotate, at least one set of two brushes, means for holding said two brushes stationary and so that they are each contiguous to oppositely polarized ones of said segments as said segmented member rotates, means for connecting said set of brushes to provide an alternating current circuit to a load as said segmented member rotates, and wherein a portion of said output of said inverter is coupled to AC motor means, DC generator means driven by said AC motor means, said DC generator means coupled to said battery means to recharge said battery means.
Claim 2
Dependent Claim
165 words
An inverter for changing direct voltage to alternatingcurrent voltage, said inverter comprising: a commutator switching assembly having a segmented member, said assembly including ring means for receiving direct current voltage from a direct current power supply, means for connecting said ring means to said segmented member to cause alternate ones of said segments to be positively and negatively polarized, means for causing said commutator switching assembly including said segmented member to rotate, at least one set of two brushes, means for holding said two brushes stationary and so that they are each contiguous to oppositely polarized ones of said segments as said segmented member rotates, means for connecting said set of brushes to provide an alternating current circuit to a load as said segmented member rotates, and wherein a portion of said output of said inverter is coupled to AC motor means, DC generator means driven by said AC motor means, said DC generator means coupled to said battery means to recharge said battery means.
Claim 3
Dependent Claim
93 words
The inverter of claim 1 wherein said commutator switching assembly comprises shaft means, means for causing said shaft means to rotate, said ring means comprising a first ring and a second ring, said first ring being permanently connected to the positive terminal of said power supply, said second ring permanently connected to the negative terminal of said power supply, each of said rings permanently mounted on said shaft to rotate when said shaft rotates, aNd said segmented member mounted on said shaft so that the segmented member also rotates as said shaft rotates.
Claim 4
Dependent Claim
20 words
The inverter of claim 2 wherein each segment of said segmented member is connected to alternate ones of said rings.
Claim 5
Dependent Claim
68 words
The inverter of claim 3 wherein said means for connecting each segment to said rings further comprises first conducting bars connecting said alternate ones of said segments to said first ring, and second conducting bars being longer than first conducting bars connecting the other segments to said second ring, and insulated portions being provided in said first ring for enabling said second conducting bars to extend there through.
Claim 6
Dependent Claim
47 words
The inverter of claim 4 wherein said means for rotating said shaft comprises DC motor means, said power supply means comprising battery means, switch means for coupling said DC motor means to said battery means, and gear means for coupling said shaft to said DC motor means.
Claim 7
Dependent Claim
21 words
The inverter of claim 1 wherein said AC motor is coupled to the output of said inverter means through transformer means.
Claim 8
Dependent Claim
36 words
The inverter of claim 6 wherein said brush means include piezoelectric crystal means, said commutator means designed to exert pressure against said brush means thereby generating a voltage that is independent of the power supply voltage,
Claim 9
Dependent Claim
52 words
The inverter of claim 1 wherein said least certain of said segments comprise piezoelectric means, means for coupling said piezoelectric means in said segments to provide output energy, and brush means foe exerting pressure on said piezoelectric means on said commutator segments to thereby generate piezoelectric output voltage on said switched output.
Claim 10
Dependent Claim
13 words
The inverter of claim 1 wherein said segmented member comprises a segmented disc.
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |