US3134008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled immersion heater
Assignee: Electro Therm Inc
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Filing: 1961-04-20
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Granted: 1964-05-19
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Expires: 1981-04-20
Abstract
No abstract record available.
Inventors
- 👤 John J Finn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:36
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; H05B3/00; H05B3/02; H05B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A THERMOSTATICALLY CONTROLLED ELECTRICAL HEATING UNIT COMPRISING A SUPPORTING FLANGE, A HEATING ELEMENT MOUNTED ON SAID FLANGE, A THERMOSTAT BULB MOUNTED ADJACENT THE ELEMENT, A SLEEVE MEMBER OPEN AT ITS ENDS AND RIGIDLY SECURED IN AND EXTENDING THROUGH THE FLANGE IN WATERTIGHT RELATIONSHIP THEREWITH, A CAPILLARY TUBE CONNECTED TO THE BULB AND EXTENDING THROUGH THE SLEEVE MEMBER, SAID BULB BEING OUTSIDE THE SLEEVE MEMBER AND BEING ARRANGED TO BE IN DIRECT CONTACT WITH THE FLUID BEING HEATED BY SAID HEATING ELEMENT, A MASS OF RELATIVELY HEAT RESISTANT POTTING COMPOUND IN THE SLEEVE MEMBER SURROUNDING THE TUBE AND SEALING THE TUBE WITH RESPECT TO SAID SLEEVE MEMBER, AND A THERMOSTATIC CONTROL MEANS MOUNTED ON THE FLANGE AND CONNECTED TO THE THERMOSTAT BULB BY SAID CAPILLARY TUBE, SAID CONTROL MEANS BEING OPERATIVELY ASSOCIATED WITH THE HEATING ELEMENT TO CONTROL THE LATTER.
Claim 2
Dependent Claim
139 words
A THERMOSTATICALLY CONTROLLED ELECTRICAL HEATING UNIT COMPRISING A SUPPORTING FLANGE, A HEATING ELEMENT MOUNTED ON SAID FLANGE, A THERMOSTAT BULB MOUNTED ADJACENT THE ELEMENT, A SLEEVE MEMBER OPEN AT ITS ENDS AND RIGIDLY SECURED IN AND EXTENDING THROUGH THE FLANGE IN WATERTIGHT RELATIONSHIP THEREWITH, A CAPILLARY TUBE CONNECTED TO THE BULB AND EXTENDING THROUGH THE SLEEVE MEMBER, SAID BULB BEING OUTSIDE THE SLEEVE MEMBER AND BEING ARRANGED TO BE IN DIRECT CONTACT WITH THE FLUID BEING HEATED BY SAID HEATING ELEMENT, A MASS OF RELATIVELY HEAT RESISTANT POTTING COMPOUND IN THE SLEEVE MEMBER SURROUNDING THE TUBE AND SEALING THE TUBE WITH RESPECT TO SAID SLEEVE MEMBER, AND A THERMOSTATIC CONTROL MEANS MOUNTED ON THE FLANGE AND CONNECTED TO THE THERMOSTAT BULB BY SAID CAPILLARY TUBE, SAID CONTROL MEANS BEING OPERATIVELY ASSOCIATED WITH THE HEATING ELEMENT TO CONTROL THE LATTER.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |