Patent US3638619A successfully refreshed from Google Patents.
US3638619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled liquid-heating tank
Assignee: VULCAN ELECTRIC COMPANY A CORP OF DE
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Filing: 1970-06-17
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Granted: 1972-02-01
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Expires: 1990-06-17
Abstract
Abstract An apparatus for heating a liquid for use in medical, dental and other services comprising a receptacle for heating the liquid, thermostatic means for determining the temperature of the liquid as it exits from the receptacle, inlet and outlet means for said receptacle, said inlet and outlet means extending into the interior of the receptacle for some distance. The thermostatic control means are located adjacent the outlet means, and the heater means for the liquid are disposed adjacent the inlet means.
Inventors
- 👤 Henry B Hall
- 👤 Norman W Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:06
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/0061; A61C1/0084
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A thermostatically controlled liquid-heating tank comprising: a receptaclE for holding a liquid; inlet and outlet means for said liquid, said inlet means being located on one side of the axis of said receptacle and said outlet means being located on the other side of said axis; heater means disposed inside said receptacle; first thermostatic control means disposed adjacent said outlet means to sense the temperature of said liquid at said outlet means; and second thermostatic control means disposed on the outside surface of said receptacle, said second thermostatic control means having a higher cutoff temperature than said first thermostatic control means.
Claim 2
Dependent Claim
101 words
A thermostatically controlled liquid-heating tank comprising: a receptaclE for holding a liquid; inlet and outlet means for said liquid, said inlet means being located on one side of the axis of said receptacle and said outlet means being located on the other side of said axis; heater means disposed inside said receptacle; first thermostatic control means disposed adjacent said outlet means to sense the temperature of said liquid at said outlet means; and second thermostatic control means disposed on the outside surface of said receptacle, said second thermostatic control means having a higher cutoff temperature than said first thermostatic control means.
Claim 3
Dependent Claim
34 words
A thermostatically controlled liquid-heating tank according to claim 1 wherein said inlet means comprises a first inlet on one side of the receptacle and extending for some distance into the interior of said receptacle.
Claim 4
Dependent Claim
28 words
A thermostatically controlled liquid-heating tank according to claim 1 wherein said outlet means comprises at least one outlet extending for some distance into the interior of said receptacle.
Claim 5
Dependent Claim
34 words
A thermostatically controlled liquid-heating tank according to claim 2 wherein said inlet means comprises a second inlet on the opposite side of said receptacle extending for some distance into the interior of said receptacle.
Claim 6
Dependent Claim
43 words
A thermostatically controlled liquid-heating tank according to claim 3 wherein said outlet means comprises a second outlet disposed on the opposite side of said tank from the side holding said first outlet means, said second outlet extending into the interior of said receptacle.
Claim 7
Dependent Claim
21 words
A thermostatically controlled liquid-heating tank according to claim 4, wherein said heater means are disposed adjacent said first and second inlet.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |