US3921855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drink dispenser with level control for supply tank
Assignee: FOUNTAIN INDUSTRIES
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Filing: 1975-01-10
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Granted: 1975-11-25
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Expires: 1995-01-10
Abstract
Abstract A water holding tank includes inlet and outlet valves. A float is carried on a rod having an elongated portion extending at its lower end through the bottom wall of the tank and an upper end extending above the upper water level and merges into a return bend portion connected to the float. The bottom end of the rod has a circular disc movable in the path of a switch connected to the inlet water valve. A tube is sealingly connected to the bottom wall of the tank and includes an upper open end extending above the upper water level. The float rod is positioned in the tube to isolate the rod from the water and to allow the float to freely move about the tube and vertically in the tank.
Inventors
- 👤 Martelle J Syverson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:29
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/60; A; A47; A47J; A47J31/00; A47J31/40; A47J31/401
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A hot drink dispensing machine comprising, a water tank having a bottom wall, inlet and outlet valve means connected to said tank, a float in said tank carried on a rod, said rod having an elongated portion extending from below the tank bottom wall to above the water upper level, said rod including a return bend portion at its upper end and said float being connected to the lower end of said return bend portion, a guide tube open at its top end sealingly connected at its lower end to the bottom wall of said tank and the top end extending above the top water level and said elongated portion of said float rod being positioned in said tube for isolating said rod from the water in said tank, and a switch in the path of the lower end of said rod for actuation by said rod as said float moves up and down with the rise and fall of water in said tank and said switch being operatively connected to said inlet valve.
Claim 2
Dependent Claim
174 words
A hot drink dispensing machine comprising, a water tank having a bottom wall, inlet and outlet valve means connected to said tank, a float in said tank carried on a rod, said rod having an elongated portion extending from below the tank bottom wall to above the water upper level, said rod including a return bend portion at its upper end and said float being connected to the lower end of said return bend portion, a guide tube open at its top end sealingly connected at its lower end to the bottom wall of said tank and the top end extending above the top water level and said elongated portion of said float rod being positioned in said tube for isolating said rod from the water in said tank, and a switch in the path of the lower end of said rod for actuation by said rod as said float moves up and down with the rise and fall of water in said tank and said switch being operatively connected to said inlet valve.
Claim 3
Dependent Claim
39 words
The structure of claIm 1 wherein said rod is freely rotatable and vertically movable in said tube to allow said float to freely move relative to said tube and said tank in response to water movement in said tank.
Claim 4
Dependent Claim
53 words
The structure of claim 2 wherein said elongated rod includes a circular disc on the lower end and said disc is free to turn with said rod as said float and rod move relative to said tube and said disc is positioned to actuate said switch at all angular positions of said float.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |