US3730144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water tank
Assignee: Jet Spray Cooler Inc
•
Filing: 1972-02-17
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Granted: 1973-05-01
•
Expires: 1992-02-17
Abstract
Abstract A hot beverage dispenser is provided with an improved tank for storing water and for maintaining the water at the proper hot temperature. The tank is formed in a pair of separable components including a metallic bottom section and a transparent upper plastic section. An internal heating element is disposed within the bottom section together with an adjacent thermostatic control. The bottom metal tank section is insulated.
Inventors
- 👤 W Arzberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:46
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/44; A47J31/54
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A hot water tank comprising: an upper plastic tank section having an outlet formed at its upper end; a lower metal tank section having an inlet formed at its lower end; means for detachably connecting said lower end of said upper tank section to said upper end of said lower tank section to define said complete tank volume, said upper tank section being larger than said lower tank section and defining a larger proportion of total tank volume; sealing means for sealing said connected ends of said upper and lower tank sections; and heat transfer means disposed within said lower tank section.
Claim 2
Dependent Claim
102 words
A hot water tank comprising: an upper plastic tank section having an outlet formed at its upper end; a lower metal tank section having an inlet formed at its lower end; means for detachably connecting said lower end of said upper tank section to said upper end of said lower tank section to define said complete tank volume, said upper tank section being larger than said lower tank section and defining a larger proportion of total tank volume; sealing means for sealing said connected ends of said upper and lower tank sections; and heat transfer means disposed within said lower tank section.
Claim 3
Dependent Claim
16 words
A water tank as defined in claim 1 wherein said heat transfer means comprises heating means.
Claim 4
Dependent Claim
33 words
A water tank as defined in claim 1 wherein said upper tank section is formed from a transparent plastic thereby to enable the interior of said tank to be inspected without disassembly thereof.
Claim 5
Dependent Claim
22 words
A water tank as defined in claim 2 further comprising: means encasing said lower section of said tank within an insulative shell.
Claim 6
Dependent Claim
61 words
A water tank as defined in claim 1 further comprising: temperature sensing means mounted to said lower tank section, so that the responsive sensing element thereof is disposed in heat conducting proximity to said heat transfer means thereby to control operation of said heat transfer means within a minimum time after said heat transfer means has begun operation beyond predetermined limits.
Claim 7
Dependent Claim
69 words
A water tank as defined in claim 1 wherein said means connecting said upper and lower tank sections to each other comprises: the mating ends of each of said upper and lower tank sections having an outwardly extending circumferential collar formed integrally therewith; means for supporting a sealing O-ring between said collars when said tank sections are brought together at said collars; and means for securing said flanges together.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |