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US3170180A
Expired / Lapsed
US
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Swimming pool cleaning aid
Assignee: Marengo Inventions Inc
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Filing: 1963-01-14
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Granted: 1965-02-23
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Milton D Winston
- 👤 John A Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:22
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A SWIMMING POOL CLEANING AID COMPRISING: A FIRST FLOAT FOR PLACEMENT AT A SUBSTANTIALLY STATIONARY POSITION WITHIN A POOL; A SECOND FLOAT; MEANS FOR CONTINUALLY MOVING SAID SECOND FLOAT ALONG THE SIDE WALLS OF SAID POOL, AND IN CONSTANT CONTACT THEREWITH, IN A SINGLE DIRECTION ONLY ABOUT SAID FIRST FLOAT; AND FLUID CONDUIT MEANS COUPLED BETWEEN SAID FIRST AND SAID SECOND FLOATS.
Claim 2
Dependent Claim
62 words
A SWIMMING POOL CLEANING AID COMPRISING: A FIRST FLOAT FOR PLACEMENT AT A SUBSTANTIALLY STATIONARY POSITION WITHIN A POOL; A SECOND FLOAT; MEANS FOR CONTINUALLY MOVING SAID SECOND FLOAT ALONG THE SIDE WALLS OF SAID POOL, AND IN CONSTANT CONTACT THEREWITH, IN A SINGLE DIRECTION ONLY ABOUT SAID FIRST FLOAT; AND FLUID CONDUIT MEANS COUPLED BETWEEN SAID FIRST AND SAID SECOND FLOATS.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |