Patent US3415344A successfully refreshed from Google Patents.
US3415344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for producing speed reduction signals for an elevator car
Assignee: Individual
•
Filing: 1965-12-20
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Granted: 1968-12-10
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Abe Akira
- 👤 Takahashi Jukichi
- 👤 Morita Shosuke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:41
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/02; B66B1/06; B66B1/14; B66B1/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A SYSTEM FOR PRODUCING A SPEED REDUCTION SIGNAL FOR AN ELEVATOR CAR SERVING A PLURALITY OF FLOORS, A COMPRISING: A PROXIMITY DETECTOR PROVIDED ON SAID ELEVATOR CAR; A MEMBER PROVIDED AT THE CENTER OF THE DISTANCE BETWEEN EACH ADJACENT PAIR OF SAID FLOORS AND ADAPTED TO BE DETECTED BY SAID PROXIMITY DETECTOR AS SAID ELEVATOR CAR MOVES UP OR DOWN; TIME-DELAYING MEANS COMPRISING ELECTRICAL STATIC COMPONENTS AND ADAPTED TO BE TRIGGERED BY THE OUTPUT SIGNAL OF SAID PROXIMITY DETECTOR TO PRODUCE A FIRST SIGNAL A PREDETERMINED PERIOD OF TIME AFTER SAID DETECTOR HAS DETECTED SAID MEMBER; MEANS FOR PRODUCING A SECOND SIGNAL CORRESPONDING TO THAT ONE OF SAID FLOORS WHICH SAID ELEVATOR CAR HAS BEEN CALLED TO SERVE; MEANS FOR PRODUCING A THIRD SIGNAL CORRESPONDING TO THE POSITION OF SAID ELEVATOR CAR RELATIVE TO SAID FLOORS; AND MEANS FOR PRODUCING A FOURTH SIGNAL UPON RECEPTION OF SAID FIRST, SECOND AND THIRD SIGNALS AT THE SAME TIME, AND FOURTH SIGNAL BEING UTILIZED TO REDUCE THE SPEED OF SAID ELEVATOR CAR.
Claim 2
Independent Claim
169 words
A SYSTEM FOR PRODUCING A SPEED REDUCTION SIGNAL FOR AN ELEVATOR CAR SERVING A PLURALITY OF FLOORS, A COMPRISING: A PROXIMITY DETECTOR PROVIDED ON SAID ELEVATOR CAR; A MEMBER PROVIDED AT THE CENTER OF THE DISTANCE BETWEEN EACH ADJACENT PAIR OF SAID FLOORS AND ADAPTED TO BE DETECTED BY SAID PROXIMITY DETECTOR AS SAID ELEVATOR CAR MOVES UP OR DOWN; TIME-DELAYING MEANS COMPRISING ELECTRICAL STATIC COMPONENTS AND ADAPTED TO BE TRIGGERED BY THE OUTPUT SIGNAL OF SAID PROXIMITY DETECTOR TO PRODUCE A FIRST SIGNAL A PREDETERMINED PERIOD OF TIME AFTER SAID DETECTOR HAS DETECTED SAID MEMBER; MEANS FOR PRODUCING A SECOND SIGNAL CORRESPONDING TO THAT ONE OF SAID FLOORS WHICH SAID ELEVATOR CAR HAS BEEN CALLED TO SERVE; MEANS FOR PRODUCING A THIRD SIGNAL CORRESPONDING TO THE POSITION OF SAID ELEVATOR CAR RELATIVE TO SAID FLOORS; AND MEANS FOR PRODUCING A FOURTH SIGNAL UPON RECEPTION OF SAID FIRST, SECOND AND THIRD SIGNALS AT THE SAME TIME, AND FOURTH SIGNAL BEING UTILIZED TO REDUCE THE SPEED OF SAID ELEVATOR CAR.
References Cited (Backward Citations)
US3225869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |