Patent US3221666A successfully refreshed from Google Patents.
US3221666A
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Display apparatus
Assignee: Hankscraft Co
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Filing: 1964-02-17
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Granted: 1965-12-07
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Sheldon M Wengel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
APPARATUS FOR CONTINUOUSLY MOVING A VISUAL DISPLAY DEVICE BACK FOURTH ALONG A PREDETERMINED PATH BETWEEN TWO SPACED-APART LOCATIONS, COMPRISING FIXED TRACK MEANS EXTENDING BETWEEN SAID SPACED-APART LOCATIONS, A DISPLAY CARRIAGE MOVABLY MOUNTED UPON SAID TRACK MEANS AND ADAPTED TO RIDGE THEREALONG, A PAIR OF PULLEYS RESPECTIVELY MOUNTED ADJACENT SAID SPACED-APART LOCATIONS WITH THE SPACE BETWEDEN SAID PULLEYS AND SAID TRACK MEANS BEING UNOBSTRUCTED AT SAID LOCATIONS, AN ENDLESS CONVEYOR LINE EXTENDING BETWEEN AND ENTRAINED ABOUT SAID PULLEYS, MOTOR MEANS FOR CONTINUOUSLY DRIVING SAID ENDLESS CONVEYOR LINE IN A SINGLE DIRECTION ABOUT SAID PULLEYS, A FLEXIBLE TOW LINE HAVING ONE OF ITS END FIXED TO SAID DISPLAY CARRIAGE, CONNECTING MEANS SECURING THE OTHER END OF SAID TOW LINE TO SAID CONVEYOR LINE, SAID CONNECTING MEANS BEING ADAPTED TO PASS AROUND SAID PULLEYS WITHOUT INTERFERENCE, AND SWIVEL MEANS IN SAID TOW LINE TO PREVENT TWISTING OF SAID TOW LINE AS SAID CONNECTING MEANS PASSES AROUND SAID PULLEYS DURING THE CONTINUOUS MOVEMENT OF SAID ENDLESS CONVEYOR LINE, SAID CONTINUOUS MOVEMENT OF SAID ENDLESS
Claim 2
Dependent Claim
170 words
APPARATUS FOR CONTINUOUSLY MOVING A VISUAL DISPLAY DEVICE BACK FOURTH ALONG A PREDETERMINED PATH BETWEEN TWO SPACED-APART LOCATIONS, COMPRISING FIXED TRACK MEANS EXTENDING BETWEEN SAID SPACED-APART LOCATIONS, A DISPLAY CARRIAGE MOVABLY MOUNTED UPON SAID TRACK MEANS AND ADAPTED TO RIDGE THEREALONG, A PAIR OF PULLEYS RESPECTIVELY MOUNTED ADJACENT SAID SPACED-APART LOCATIONS WITH THE SPACE BETWEDEN SAID PULLEYS AND SAID TRACK MEANS BEING UNOBSTRUCTED AT SAID LOCATIONS, AN ENDLESS CONVEYOR LINE EXTENDING BETWEEN AND ENTRAINED ABOUT SAID PULLEYS, MOTOR MEANS FOR CONTINUOUSLY DRIVING SAID ENDLESS CONVEYOR LINE IN A SINGLE DIRECTION ABOUT SAID PULLEYS, A FLEXIBLE TOW LINE HAVING ONE OF ITS END FIXED TO SAID DISPLAY CARRIAGE, CONNECTING MEANS SECURING THE OTHER END OF SAID TOW LINE TO SAID CONVEYOR LINE, SAID CONNECTING MEANS BEING ADAPTED TO PASS AROUND SAID PULLEYS WITHOUT INTERFERENCE, AND SWIVEL MEANS IN SAID TOW LINE TO PREVENT TWISTING OF SAID TOW LINE AS SAID CONNECTING MEANS PASSES AROUND SAID PULLEYS DURING THE CONTINUOUS MOVEMENT OF SAID ENDLESS CONVEYOR LINE, SAID CONTINUOUS MOVEMENT OF SAID ENDLESS
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |