US3285241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water heater dip tube construction
Assignee: Robertshaw Controls Co
•
Filing: 1960-12-05
•
Granted: 1966-11-15
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Bordeaux Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/12; F24H9/13; F24H9/133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A WATER HEATER HAVING A THERMOSTATICALLY CONTROLLED BURNER, THE COMBINATION INCLUDING A TANK, A COLD WATER INLET IN THE TOP OF SAID TANK, A HOT WATER OUTLET IN THE TOP OF SAID TANK, A DIP TUBE ATTACHED TO SAID TANK AT SAID COLD WATER INLET EXTENDING TO THE LOWER PORTION OF SAID TANK, MEANS INCLUDING A VENTURI INSERT IN SAID TUBE FOR MIXING THE WATER AT THE TOP OF SAID TANK WITH THE INCOMING COLD WATER TO PREVENT EXCESSIVELY HIGH TEMPERATURES AT THE TOP OF SAID TANK, AND FASTENER MEANS MOUNTING SAID VENTURI INSERT IN SAID TUBE AND HAVING AN OPENING THEREIN CONNECTING THE INTERIOR OF SAID TUBE WITH THE SURROUNDING WATER
Claim 2
Dependent Claim
113 words
IN A WATER HEATER HAVING A THERMOSTATICALLY CONTROLLED BURNER, THE COMBINATION INCLUDING A TANK, A COLD WATER INLET IN THE TOP OF SAID TANK, A HOT WATER OUTLET IN THE TOP OF SAID TANK, A DIP TUBE ATTACHED TO SAID TANK AT SAID COLD WATER INLET EXTENDING TO THE LOWER PORTION OF SAID TANK, MEANS INCLUDING A VENTURI INSERT IN SAID TUBE FOR MIXING THE WATER AT THE TOP OF SAID TANK WITH THE INCOMING COLD WATER TO PREVENT EXCESSIVELY HIGH TEMPERATURES AT THE TOP OF SAID TANK, AND FASTENER MEANS MOUNTING SAID VENTURI INSERT IN SAID TUBE AND HAVING AN OPENING THEREIN CONNECTING THE INTERIOR OF SAID TUBE WITH THE SURROUNDING WATER
References Cited (Backward Citations)
US1334446A
Cited
US1681377A
Cited
GB282075A
Cited
US2012101A
Cited
US2115601A
Cited
US2062507A
Cited
US2065148A
Cited
US2025256A
Cited
US2176331A
Cited
US2294163A
Cited
US2504092A
Cited
US2592863A
Cited
US3019986A
Cited
US3027088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |