Patent US3213342A successfully refreshed from Google Patents.
US3213342A
Expired / Lapsed
US
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Automatic motor reversal controlled by variable transformer means
Assignee: Individual
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Filing: 1962-05-23
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Granted: 1965-10-19
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Expires: 1982-05-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Littwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:55
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/288; B; B23; B23Q; B23Q15/00; B23Q15/007; B23Q15/0075; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN APPARATUS OF THE CHARACTER DISCLOSED, A RECIPROCABLE TABLE, DRIE MEANS FOR DRIVING THE TABLE, MEANS FOR CONTROLLING THE DRIVE MEANS INCLUDING SWITCH MEANS OPERABLY CONTROLLABLE BY THE TABLE AT A PRE-DETERMINED POINT AT EACH END OF THE RANGE OF MOVEMENT OF THE TABLE AS HEREINAFTER SET FORTH, TUBE MEANS FOR CONTROLLING EACH SWITCH MEANS, A FIRST TRANSFORMER ELECTRICALLY CONNECTED WITH EACH TUBE MEANS INCLUDING AN ARMATURE MOVABLE BY THE TABLE FOR VARYING THE BIAS ON THE RESPECTIVE TUBE MEANS AND RENDERING IT CONDUCTING, AND A MANUALLY ADJUSTABLE TRANSFORMER ELECTRICALLY CONNECTED WITH EACH FIRST TRANSFORMER FOR INDEPENDENTLY VARYING THE POINT AT WHICH THE RESPECTIVE TUBE MEANS BECOMES CONDUCTING RELATIVE TO THE POSITION OF THE TABLE, AND THEREBY VARYING THE POINT
Claim 2
Dependent Claim
120 words
IN APPARATUS OF THE CHARACTER DISCLOSED, A RECIPROCABLE TABLE, DRIE MEANS FOR DRIVING THE TABLE, MEANS FOR CONTROLLING THE DRIVE MEANS INCLUDING SWITCH MEANS OPERABLY CONTROLLABLE BY THE TABLE AT A PRE-DETERMINED POINT AT EACH END OF THE RANGE OF MOVEMENT OF THE TABLE AS HEREINAFTER SET FORTH, TUBE MEANS FOR CONTROLLING EACH SWITCH MEANS, A FIRST TRANSFORMER ELECTRICALLY CONNECTED WITH EACH TUBE MEANS INCLUDING AN ARMATURE MOVABLE BY THE TABLE FOR VARYING THE BIAS ON THE RESPECTIVE TUBE MEANS AND RENDERING IT CONDUCTING, AND A MANUALLY ADJUSTABLE TRANSFORMER ELECTRICALLY CONNECTED WITH EACH FIRST TRANSFORMER FOR INDEPENDENTLY VARYING THE POINT AT WHICH THE RESPECTIVE TUBE MEANS BECOMES CONDUCTING RELATIVE TO THE POSITION OF THE TABLE, AND THEREBY VARYING THE POINT
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |