Patent US3247434A successfully refreshed from Google Patents.
US3247434A
Expired / Lapsed
US
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Electrical control means
Assignee: Individual
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Filing: 1961-12-06
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Granted: 1966-04-19
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Expires: 1981-12-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Littwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:31
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN APPARATUS OF THE CHARACTER DISCLOSED, A MEMBER RECIPROCABLE BODILY THROUGHOUT A MAXIMUM RANGE OF MOVEMENT, A REVERSIBLE ELECTRIC MOTOR FOR DRIVING THE RECIPROCABLE MEMBER, A PAIR OF OPPOSED SWITCHES SPACED APART ON A LINE CORRESPONDING TO THE LINE OF MOVEMENT OF THE RECIPROCABLE MEMBER, AND EACH SWITCH BEING OPERABLE, ON ACTUATION THEREOF, FOR REVERSING THE ELECTRIC MOTOR, THE SWITCHES BEING ADJUSTABLE TOWARD AND FROM EACH OTHER, AND AN ACTUATOR RECIPROCABLE ALONG SAID LINE BETWEEN THE SWITCHES AND OPERABLE FOR ALTERNATELY ACTUATING THEM, AND MEANS OPERABLY INTERCONNECTING THE RECIPROCABLE MEMBER AND ACTUATOR FOR DRIVING THE ACTUATOR BY THE RECIPROCABLE MEMBER ALONG ITS LINE OF MOVEMENT BETWEEN THE SWITCHES A DISTANCE PROPORTIONAL TO THE AMOUNT OF MOVEMENT OF THE RECIPROCABLE MEMBER IN EACH OF OPPOSITE DIRECTIONS.
Claim 2
Dependent Claim
125 words
IN APPARATUS OF THE CHARACTER DISCLOSED, A MEMBER RECIPROCABLE BODILY THROUGHOUT A MAXIMUM RANGE OF MOVEMENT, A REVERSIBLE ELECTRIC MOTOR FOR DRIVING THE RECIPROCABLE MEMBER, A PAIR OF OPPOSED SWITCHES SPACED APART ON A LINE CORRESPONDING TO THE LINE OF MOVEMENT OF THE RECIPROCABLE MEMBER, AND EACH SWITCH BEING OPERABLE, ON ACTUATION THEREOF, FOR REVERSING THE ELECTRIC MOTOR, THE SWITCHES BEING ADJUSTABLE TOWARD AND FROM EACH OTHER, AND AN ACTUATOR RECIPROCABLE ALONG SAID LINE BETWEEN THE SWITCHES AND OPERABLE FOR ALTERNATELY ACTUATING THEM, AND MEANS OPERABLY INTERCONNECTING THE RECIPROCABLE MEMBER AND ACTUATOR FOR DRIVING THE ACTUATOR BY THE RECIPROCABLE MEMBER ALONG ITS LINE OF MOVEMENT BETWEEN THE SWITCHES A DISTANCE PROPORTIONAL TO THE AMOUNT OF MOVEMENT OF THE RECIPROCABLE MEMBER IN EACH OF OPPOSITE DIRECTIONS.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |