US3248630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-operators
Assignee: Individual
•
Filing: 1962-06-15
•
Granted: 1966-04-26
•
Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:04
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/686; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A DOOR-OPERATOR COMPRISING, A DOOR, A MOTOR FOR DRIVING SAID DOOR INTO OPENED AND CLOSED POSITIONS, POWER MEANS CONNECTED TO SAID MOTOR, A POWER SWITCH INTERMEDIATE SAID POWER MEANS AND SAID MOTOR, A REVERSING SWITCH IN SAID POWER MEANS FOR DELIVERING POWER TO SAID MOTOR TO DRIVE SAID MOTOR IN A FIRST DIRECTION TO OPEN SAID DOOR AND IN A SECOND DIRECTION TO CLOSE SAID DOOR, MEANS CONNECTING SAID MOTOR TO SAID DOOR, AND MEANS ON SAID CONNECTING MEANS FOR CONTROLLING SAID REVERSING SWITCH TO POSITION SAID REVERSING SWITCH IN A FIRST POSITION TO DRIVE SAID MOTOR IN SAID FIRST DIRECTION TO OPEN SAID DOOR AND TO A SECOND POSITION TO DRIVE SAID MOTOR IN SAID SECOND DIRECTION TO CLOSE SAID DOOR, SAID MEANS ON SAID CONNECTING MEANS INCLUDING MEANS FOR HOLDING SAID POWER SWITCH IN CLOSED POSITION AND MAINTAINING SAID POWER MEANS CONNECTED TO SAID MOTOR WHILE SAID MOTOR IS DRIVING SAID DOOR AND FOR RELEASING SAID POWER SWITCH AND DISCONNECTING SAID POWER MEANS FROM SAID MOTOR AS SAID CONNECTING MEANS REPOSITIONS SAID REVERSING SWITCH.
Claim 2
Dependent Claim
176 words
A DOOR-OPERATOR COMPRISING, A DOOR, A MOTOR FOR DRIVING SAID DOOR INTO OPENED AND CLOSED POSITIONS, POWER MEANS CONNECTED TO SAID MOTOR, A POWER SWITCH INTERMEDIATE SAID POWER MEANS AND SAID MOTOR, A REVERSING SWITCH IN SAID POWER MEANS FOR DELIVERING POWER TO SAID MOTOR TO DRIVE SAID MOTOR IN A FIRST DIRECTION TO OPEN SAID DOOR AND IN A SECOND DIRECTION TO CLOSE SAID DOOR, MEANS CONNECTING SAID MOTOR TO SAID DOOR, AND MEANS ON SAID CONNECTING MEANS FOR CONTROLLING SAID REVERSING SWITCH TO POSITION SAID REVERSING SWITCH IN A FIRST POSITION TO DRIVE SAID MOTOR IN SAID FIRST DIRECTION TO OPEN SAID DOOR AND TO A SECOND POSITION TO DRIVE SAID MOTOR IN SAID SECOND DIRECTION TO CLOSE SAID DOOR, SAID MEANS ON SAID CONNECTING MEANS INCLUDING MEANS FOR HOLDING SAID POWER SWITCH IN CLOSED POSITION AND MAINTAINING SAID POWER MEANS CONNECTED TO SAID MOTOR WHILE SAID MOTOR IS DRIVING SAID DOOR AND FOR RELEASING SAID POWER SWITCH AND DISCONNECTING SAID POWER MEANS FROM SAID MOTOR AS SAID CONNECTING MEANS REPOSITIONS SAID REVERSING SWITCH.
References Cited (Backward Citations)
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US2424385A
Cited
US2532722A
Cited
US2882044A
Cited
US2752150A
Cited
US2909718A
Cited
US2923541A
Cited
US3060361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |