Patent US3074078A successfully refreshed from Google Patents.
US3074078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool cleaning method and apparatus
Assignee: Individual
•
Filing: 1959-07-06
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Granted: 1963-01-22
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Sigurd F Varian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:45
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD FOR CLEANING THE INTERIOR WALLS OF A SWIMMING POOL OF SLIT DEPOSITS INCLUDING THE STEPS OF: SUBMERGING AT LEAST A FREE END PORTION OF A HOSE ADJACENT TO THE INTERIOR WALLS OF THE SWIMMING POOL; DISCHARGING WATER THROUGH THE FREE END OF THE HOSE TO STIR UP SLIT DEPOSITS AND TO SELF-PROPEL THE HOSE DUE TO THE REACTIVE FORCE OF THE DISCHARGING WATER ON THE FREE END THEREOF; PROPORTIONING THE EFFECTIVE DENSITY OF THE HOSE, STIFFNESS OF THE HOSE, AND WATER FLOW THROUGH THE HOSE TO CAUSE THE FREE END OF THE HOSE TO TRACE A RANDOM CURVILINEAR TRACK OVER THE INTERIOR SURFACE OF THE POOL, A PREPONDERANCE OF THE TRACK HAVING A RADIUS OF CURVATURE IN EXCESS OF FOUR FEET WHEREBY THE SELF-PROPELLED HOSE WILL RANGE OVER RELATIVELY LARGE DISTANCES WITHIN THE POOL.
Claim 2
Independent Claim
136 words
THE METHOD FOR CLEANING THE INTERIOR WALLS OF A SWIMMING POOL OF SLIT DEPOSITS INCLUDING THE STEPS OF: SUBMERGING AT LEAST A FREE END PORTION OF A HOSE ADJACENT TO THE INTERIOR WALLS OF THE SWIMMING POOL; DISCHARGING WATER THROUGH THE FREE END OF THE HOSE TO STIR UP SLIT DEPOSITS AND TO SELF-PROPEL THE HOSE DUE TO THE REACTIVE FORCE OF THE DISCHARGING WATER ON THE FREE END THEREOF; PROPORTIONING THE EFFECTIVE DENSITY OF THE HOSE, STIFFNESS OF THE HOSE, AND WATER FLOW THROUGH THE HOSE TO CAUSE THE FREE END OF THE HOSE TO TRACE A RANDOM CURVILINEAR TRACK OVER THE INTERIOR SURFACE OF THE POOL, A PREPONDERANCE OF THE TRACK HAVING A RADIUS OF CURVATURE IN EXCESS OF FOUR FEET WHEREBY THE SELF-PROPELLED HOSE WILL RANGE OVER RELATIVELY LARGE DISTANCES WITHIN THE POOL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |