Patent US3293515A successfully refreshed from Google Patents.
US3293515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long travel linearly reciprocating electric motor
Assignee: Individual
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Filing: 1963-09-24
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Granted: 1966-12-20
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 John F Langs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN A LINEARLY RECIPROCABLE ALTERNATING CURRENT ELECTRIC MOTOR, A FIRST ELECTROMAGNET HAVING AN ENERGIZEABLE FIRST COIL, A SECOND ELECTROMAGNET HAVING AN ENERGIZEABLE SECOND COIL, MEANS SUPPORTING SAID ELECTROMAGNETS IN SPACEDAPART RELATIONSHIP, SPACED ARMATURES DISPOSED BETWEEN SAID ELECTROMAGNETS, SPRING MEANS FOR SUPPORTING SAID ARMATURES SPACED FROM SAID ELECTROMAGNETS, ELONGATED KNIFE BLADE MEANS, MEANS FOR SECURING THE ENDS OF THE KNIFE BLADE MEANS, TO SAID ARMATURES FOR ENDWISE MOVEMENT BETWEEN SAID ELECTROMAGNETS, A CIRCUIT HAVING CONDUCTORS FOR CONNECTING BOTH SAID COILS TO A SOURCE OF ALTERNATING CURRENT SUPPLY, A FIRST ELECTRICAL ONE-WAY VALVE INTERPOSED IN THE CIRCUIT TO SAID FIRST COIL TO PASS CURRENT THERETO IN ONE DIRECTION OF CURRENT FLOW AND TO BLOCK CURRENT IN THE OPPOSITE DIRECTION OF CURRENT FLOW, AND A SECOND ELECTRICAL ONE-WAY VALVE INTERPOSED IN THE CIRCUIT TO SAID SECOND COIL TO PASS CURRENT THERETO IN SAID OPPOSITE DIRECTION OF CURRENT FLOW AND TO BLOCK CURRENT IN SAID ONE DIRECTION OF CURRENT FLOW.
Claim 2
Dependent Claim
156 words
IN A LINEARLY RECIPROCABLE ALTERNATING CURRENT ELECTRIC MOTOR, A FIRST ELECTROMAGNET HAVING AN ENERGIZEABLE FIRST COIL, A SECOND ELECTROMAGNET HAVING AN ENERGIZEABLE SECOND COIL, MEANS SUPPORTING SAID ELECTROMAGNETS IN SPACEDAPART RELATIONSHIP, SPACED ARMATURES DISPOSED BETWEEN SAID ELECTROMAGNETS, SPRING MEANS FOR SUPPORTING SAID ARMATURES SPACED FROM SAID ELECTROMAGNETS, ELONGATED KNIFE BLADE MEANS, MEANS FOR SECURING THE ENDS OF THE KNIFE BLADE MEANS, TO SAID ARMATURES FOR ENDWISE MOVEMENT BETWEEN SAID ELECTROMAGNETS, A CIRCUIT HAVING CONDUCTORS FOR CONNECTING BOTH SAID COILS TO A SOURCE OF ALTERNATING CURRENT SUPPLY, A FIRST ELECTRICAL ONE-WAY VALVE INTERPOSED IN THE CIRCUIT TO SAID FIRST COIL TO PASS CURRENT THERETO IN ONE DIRECTION OF CURRENT FLOW AND TO BLOCK CURRENT IN THE OPPOSITE DIRECTION OF CURRENT FLOW, AND A SECOND ELECTRICAL ONE-WAY VALVE INTERPOSED IN THE CIRCUIT TO SAID SECOND COIL TO PASS CURRENT THERETO IN SAID OPPOSITE DIRECTION OF CURRENT FLOW AND TO BLOCK CURRENT IN SAID ONE DIRECTION OF CURRENT FLOW.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |