US3384914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool vacuum
Assignee: Individual
•
Filing: 1966-11-16
•
Granted: 1968-05-28
•
Expires: 1986-11-16
Abstract
No abstract record available.
Inventors
- 👤 Paul C Wilhelmsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/14; E04H4/16; E04H4/1654
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN AUTOMATIC POOL CLEANING DEVICE FOR CLEANING DEBRIS FROM THE BOTTOM OF WATER-FILLED POOLS TO BE USED IN COMBINATION WITH A FILTER PUMP COMPRISING A HOUSING HAVING A VARIABLE SIZE BUOYANCY CHAMBER THEREIN, A CLEANING NOZZLE MEANS FIXED TO SAID HOUSING, FLUID COMMUNICATION MEANS INTERCONNECTING SAID NOZZLE AND THE INSIDE OF SAID HOUSING, VALVE MEANS WITHIN SAID FLUID COMMUNICATING MEANS TO CONTROL FLUID FLOW THERETHROUGH, CONDUIT
Claim 2
Dependent Claim
66 words
AN AUTOMATIC POOL CLEANING DEVICE FOR CLEANING DEBRIS FROM THE BOTTOM OF WATER-FILLED POOLS TO BE USED IN COMBINATION WITH A FILTER PUMP COMPRISING A HOUSING HAVING A VARIABLE SIZE BUOYANCY CHAMBER THEREIN, A CLEANING NOZZLE MEANS FIXED TO SAID HOUSING, FLUID COMMUNICATION MEANS INTERCONNECTING SAID NOZZLE AND THE INSIDE OF SAID HOUSING, VALVE MEANS WITHIN SAID FLUID COMMUNICATING MEANS TO CONTROL FLUID FLOW THERETHROUGH, CONDUIT
References Cited (Backward Citations)
US3321787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |