Patent US3333621A successfully refreshed from Google Patents.
US3333621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosure for swimming pool
Assignee: Individual
•
Filing: 1965-11-05
•
Granted: 1967-08-01
•
Expires: 1985-11-05
Abstract
No abstract record available.
Inventors
- 👤 William F Elder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:56
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/14; E04H3/16; E04H3/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN EXTENDABLE AND RETRACTABLE COVER FOR A SWIMMING POOL COMPRISING, A PLURALITY OF TRANSVERSE PANELS EACH HINGEABLY CONNECTED TO THE ADJACENT PANEL TO FORM AN ARRAY DISPOSED IN ACCORDION FOLD ARRANGEMENT WITH ALTERNATE RIDGES AND VALLEYS; A PLURALITY OF GROOVE LOWER WHEELS ROTATABLY MOUNTED UPON SAID PANELS AND ARRANGED TO SUPPORT SAID ARRAY UPON A PAIR OF LONGITUDINAL TRACKS ABOVE SAID POOL; A PAIR OF CABLES ENGAGING THE TOP OF THE GROOVES OF SAID LOWER WHEELS TO RETAIN SAME UPON SAID TRACKS; A PLURALITY OF GROOVE UPPER WHEELS ROTATABLY MOUNTED UPON SAID PANELS ABOVE SAID LOWER WHEELS; A SPRING-LOADED CABLE ENGAGING THE BOTTOM OF THE GROOVES OF SAID UPPER WHEELS AND DISPOSED TO YIELDINGLY URGE SAID PANELS TOWARD AN UPRIGHT POSITION; AND MEANS FOR DRAWING SAID PANELS IN ONE DIRECTION TO EXTEND SAID ARRAY AND TO COVER SAID POOL, AND FOR WITHDRAWING SAID PANELS IN AN OPPOSITE DIRECTION TO RETRACT SAID ARRAY AND TO UNCOVER SAID POOL.
Claim 2
Dependent Claim
157 words
AN EXTENDABLE AND RETRACTABLE COVER FOR A SWIMMING POOL COMPRISING, A PLURALITY OF TRANSVERSE PANELS EACH HINGEABLY CONNECTED TO THE ADJACENT PANEL TO FORM AN ARRAY DISPOSED IN ACCORDION FOLD ARRANGEMENT WITH ALTERNATE RIDGES AND VALLEYS; A PLURALITY OF GROOVE LOWER WHEELS ROTATABLY MOUNTED UPON SAID PANELS AND ARRANGED TO SUPPORT SAID ARRAY UPON A PAIR OF LONGITUDINAL TRACKS ABOVE SAID POOL; A PAIR OF CABLES ENGAGING THE TOP OF THE GROOVES OF SAID LOWER WHEELS TO RETAIN SAME UPON SAID TRACKS; A PLURALITY OF GROOVE UPPER WHEELS ROTATABLY MOUNTED UPON SAID PANELS ABOVE SAID LOWER WHEELS; A SPRING-LOADED CABLE ENGAGING THE BOTTOM OF THE GROOVES OF SAID UPPER WHEELS AND DISPOSED TO YIELDINGLY URGE SAID PANELS TOWARD AN UPRIGHT POSITION; AND MEANS FOR DRAWING SAID PANELS IN ONE DIRECTION TO EXTEND SAID ARRAY AND TO COVER SAID POOL, AND FOR WITHDRAWING SAID PANELS IN AN OPPOSITE DIRECTION TO RETRACT SAID ARRAY AND TO UNCOVER SAID POOL.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |