US3374864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elevator control wherein car destination is registered by same switch which registers car call
Assignee: Individual
•
Filing: 1964-02-06
•
Granted: 1968-03-26
•
Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Port Leo Weiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:43
CPC Classifications
B; B66; B66B; B66B3/00; B66B3/02; B66B3/023; B66B1/00; B66B1/24; B66B1/2408; B66B1/2458; B66B2201/00; B66B2201/10; B66B2201/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN AN ELEVATOR SYSTEM COMPRISING AT LEAST TWO ELEVATOR CARS EACH SERVING AT LEAST THREE FLOORS, AN ARRAY OF FLOOR SELECTOR BUTTONS ADJACENT TO THE CAR LANDINGS AT EACH FLOOR, CIRCUIT MEANS WHICH ARE PRE-SET BY OPERATION OF ANY ONE OF SAID FLOOR SELECTOR BUTTONS, SAID CIRCUIT MEANS BEING ADAPTED, AFTER PRE-SETTING, TO CONTROL THE DRIVING MOTORS OF THE ELEVATOR CARS SO AS TO CONTROL ONE OF SAID ELEVATOR CARS TO HALT AT A FLOOR AT WHICH A FLOOR SELECTOR
Claim 2
Dependent Claim
80 words
IN AN ELEVATOR SYSTEM COMPRISING AT LEAST TWO ELEVATOR CARS EACH SERVING AT LEAST THREE FLOORS, AN ARRAY OF FLOOR SELECTOR BUTTONS ADJACENT TO THE CAR LANDINGS AT EACH FLOOR, CIRCUIT MEANS WHICH ARE PRE-SET BY OPERATION OF ANY ONE OF SAID FLOOR SELECTOR BUTTONS, SAID CIRCUIT MEANS BEING ADAPTED, AFTER PRE-SETTING, TO CONTROL THE DRIVING MOTORS OF THE ELEVATOR CARS SO AS TO CONTROL ONE OF SAID ELEVATOR CARS TO HALT AT A FLOOR AT WHICH A FLOOR SELECTOR
References Cited (Backward Citations)
US2148913A
Cited
US2578431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |