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US3812890A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for transmitting predetermined volumes of liquid from one container to another container

Assignee: Siemens AG
•
Filing: 1972-07-25
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Granted: 1974-05-28
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Expires: 1992-07-25
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Abstract

Abstract A device for transmitting predetermined volumes of liquid from one container to another container consists of a pipe leading from the first container to the second container and immersed into the liquid in the first container, means sealing the first container, a pressure transmitting tube introduced into the first container for producing pressure means pressing the liquid through the pipe and means measuring a predetermined liquid volume. The invention is particularly characterized in that there is a substantially constant super pressure in the first container and there are two signalling devices spaced from each other and located in the path of the flowing liquid. When the liquid front passes them they transmit a signal to a calculator which determines from these signals the volume of liquid passing through the pipe per time unit. Closure means for the liquid are connected to the calculator. They receive a closing signal formed by the incoming signals after the passing of time required for the transmission of desired liquid volume set at the calculator.

Inventors

  • 👤 W Haas
  • 👤 K Isensee

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 15:40
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0289; B01L3/0293; G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 158 words
A device for transmitting predetermined volumes of liquid, comprising a first container adapted to contain a liquid, means sealing said container, means supplying constant pressure into the interior of said container, a second container, a pipe having one end extending into the first container and an opposite end extending toward the second container for the flow of a liquid from the first container to the second container, two spaced signalling devices for determining the passage of the liquid front located in the path of liquid flowing through said pipe, a calculator connected with said signalling devices and receiving their signals, a setting device for a desired amount of liquid connected with the calculator, said calculator determining from said signals the volume of liquid passing through said pipe per time unit, and means connected with said calculator for closing said pipe when the time runs out during which the liquid volume set by the setting device has been transmitted.
Claim 2
Independent Claim 158 words
A device for transmitting predetermined volumes of liquid, comprising a first container adapted to contain a liquid, means sealing said container, means supplying constant pressure into the interior of said container, a second container, a pipe having one end extending into the first container and an opposite end extending toward the second container for the flow of a liquid from the first container to the second container, two spaced signalling devices for determining the passage of the liquid front located in the path of liquid flowing through said pipe, a calculator connected with said signalling devices and receiving their signals, a setting device for a desired amount of liquid connected with the calculator, said calculator determining from said signals the volume of liquid passing through said pipe per time unit, and means connected with said calculator for closing said pipe when the time runs out during which the liquid volume set by the setting device has been transmitted.
Claim 3
Dependent Claim 22 words
A device in accordance with claim 1, wherein said pipe is an elastic hose and wherein said pipe closing means are clamps.
Claim 4
Dependent Claim 36 words
A device in accordance with claim 1, wherein the signalling device which is last in the direction of the flow of the liquid is located upon said opposite end of the pipe facing the second container.
Claim 5
Dependent Claim 53 words
A device in accordance with claim 1, comprising a disturbance indicator connected with said calculator, said calculator forming a disturbance signal from the first-mentioned signals when the flow of liquid in said pipe is interrupted prior to the expiration of the set time required for the flow of the desired amount of liquid.

References Cited (Backward Citations)

US3015957A Cited
US3163176A Cited
US3596673A Cited
US3700904A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-05-27 1977-11-26 1978-05-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-05-27 1981-11-26 1982-05-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-05-27 1985-11-26 1986-05-28 $7700.00 Window Closed / Lapsed

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