US3207133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming pool heater
Assignee: HW Andersen Products Inc
•
Filing: 1962-08-27
•
Granted: 1965-09-21
•
Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Harold W Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:32
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PORTABLE SWIMMING POOL RECIRCULATING WATER HEATER DESIGNED AND ADAPTED FOR RAISING THE TEMPERATURE OF THE WATER IN THE POOL COMPRISING, A CASING PROVIDED WITH A BURNER IN ITS LOWER PORTION AND A COMBUSTION CHAMBER THEREABOVE, A WATER CIRCULATING COIL WITHIN SAID CASING POSITIONED ABOVE THE BURNER AND HAVING AN INLET FOR RECEIVING WATER FROM THE POOL AND AN OUTLET FOR RETURNING HEATED WATER TO THE POOL, A FLUE FOR THE COMBUSTION CHAMBER FITTED IN THE SIDE OF THE CASING AND EXTENDING HORIZONTALLY OUTWARD AND VERTICALLY UPWARD, A MOTOR DRIVEN DRAFT-
Claim 2
Dependent Claim
91 words
A PORTABLE SWIMMING POOL RECIRCULATING WATER HEATER DESIGNED AND ADAPTED FOR RAISING THE TEMPERATURE OF THE WATER IN THE POOL COMPRISING, A CASING PROVIDED WITH A BURNER IN ITS LOWER PORTION AND A COMBUSTION CHAMBER THEREABOVE, A WATER CIRCULATING COIL WITHIN SAID CASING POSITIONED ABOVE THE BURNER AND HAVING AN INLET FOR RECEIVING WATER FROM THE POOL AND AN OUTLET FOR RETURNING HEATED WATER TO THE POOL, A FLUE FOR THE COMBUSTION CHAMBER FITTED IN THE SIDE OF THE CASING AND EXTENDING HORIZONTALLY OUTWARD AND VERTICALLY UPWARD, A MOTOR DRIVEN DRAFT-
References Cited (Backward Citations)
GB379244A
Cited
US1318355A
Cited
US1298254A
Cited
US1236416A
Cited
US1869939A
Cited
US1770588A
Cited
US2186802A
Cited
US2453985A
Cited
US2584326A
Cited
US2634712A
Cited
US2841124A
Cited
US2827268A
Cited
US2906258A
Cited
US2884197A
Cited
US2989185A
Cited
US2987259A
Cited
US3118430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |