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US3565338A Expired / Lapsed US ⏱️ 0.0 years remaining

Antisurge flow control device for a drinking fountain or the like

Assignee: Haws Drinking Faucet Co
•
Filing: 1969-06-13
•
Granted: 1971-02-23
•
Expires: 1989-06-13
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Abstract

Abstract A flow-control device to prevent surging of the water discharge from a drinking fountain or the like. The device is particularly useful in association with freeze-proof drinking fountains that necessarily have a relatively long supply conduit extending between the elevated discharge nozzle of the fountain and the control valve thereof which is buried within the ground at a depth below the frostline. In fountains of this type, the supply conduit is substantially drained of water following each use, thereby causing it to contain a long column of air at the initiation of each cycle of use that tends to be compressed in front of and entrained within the water flowing upwardly toward the nozzle. Such compressed and entrained air causes surging or irratic behavior of the water discharge from the fountain. The flow-control device is located along such water supply conduit and provides a relatively long chamber having an inlet communicating with the supply conduit on the valve side thereof, and an outlet through which a flow tube extends into the chamber toward adjacency with the inlet but not in direct alignment therewith. The flow tube also communicates with the supply conduit but on the nozzle side thereof. Water discharging from the inlet into the chamber tends to have trapped and entrained air removed therefrom so that the flow of water leaving the chamber via the flow tube is substantially surgeless.

Inventors

  • 👤 Allen C Wright

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 07:26
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; E03B9/20; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3118

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 171 words
An antisurge flow-control device for a freeze-proof drinking fountain or the like having a relatively long liquid supply conduit extending between the discharge port of such fountain and the valve controlling the flow of liquid thereto, comprising a casing defining a chamber therein adapted to be interposed in such supply conduit generally adjacent such discharge port and having an inlet connectable with such supply conduit on the side thereof leading to such valve and an outlet connectable with such supply conduit on the side thereof leading to such discharge port, and a flow tube projecting into said chamber from said outlet thereof toward adjacency with said inlet so as to have an inner end portion immersed in liquid delivered to said chamber through said inlet and provide a substantially surgeless flow of liquid to such supply conduit for transmission therethrough to such discharge port, said flow tube having the inner end portion thereof offset from said inlet so that substantially no airentrained liquid is ejected directly therefrom into said flow tube.
Claim 2
Dependent Claim 171 words
An antisurge flow-control device for a freeze-proof drinking fountain or the like having a relatively long liquid supply conduit extending between the discharge port of such fountain and the valve controlling the flow of liquid thereto, comprising a casing defining a chamber therein adapted to be interposed in such supply conduit generally adjacent such discharge port and having an inlet connectable with such supply conduit on the side thereof leading to such valve and an outlet connectable with such supply conduit on the side thereof leading to such discharge port, and a flow tube projecting into said chamber from said outlet thereof toward adjacency with said inlet so as to have an inner end portion immersed in liquid delivered to said chamber through said inlet and provide a substantially surgeless flow of liquid to such supply conduit for transmission therethrough to such discharge port, said flow tube having the inner end portion thereof offset from said inlet so that substantially no airentrained liquid is ejected directly therefrom into said flow tube.
Claim 3
Dependent Claim 47 words
The flow-control device of claim 1 and further comprising a flow regulator seated within said inlet and operative to provide a relatively uniform flow volume into said chamber over a relatively large range of pressures provided by the source of any liquid delivered to such supply conduit.
Claim 4
Dependent Claim 27 words
The flow-control device of claim 1 in which said flow tube comprises a part of such supply conduit and extends through said outlet in sealing relation therewith.
Claim 5
Dependent Claim 44 words
The flow-control device of claim 1 in which said casing is longitudinally elongated and defines a relatively long chamber therein adapted to be vertically oriented, said inlet being at the lower end of said chamber and said outlet being at the upper end thereof.
Claim 6
Dependent Claim 48 words
The flow control device of claim 4 and further comprising a flow regulator seated within said inlet and operative to provide a relatively uniform flow volume into said chamber over a relatively large range of pressures provided by the source of aNy liquid delivered to such supply conduit.
Claim 7
Dependent Claim 25 words
The flow-control device of claim 5 in which said flow regulator is a pressure compensated flow-control device enabling liquid to drain therethrough from said chamber.
Claim 8
Dependent Claim 27 words
The flow-control device of claim 5 in which said flow tube comprises a part of such supply conduit and extends through said outlet in sealing relation therewith.
Claim 9
Dependent Claim 24 words
The flow-control device of claim 7 in which said flow regulator is a pressure-compensated flow-control device enabling liquid to drain therethrough from said chamber.

References Cited (Backward Citations)

US799657A Cited
US1022572A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-02-22 1974-08-24 1975-02-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-22 1978-08-24 1979-02-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-22 1982-08-24 1983-02-23 $7700.00 Window Closed / Lapsed

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