GB1488199A - Drainage system - Google Patents

Drainage system

Info

Publication number
GB1488199A
GB1488199A GB3336675A GB3336675A GB1488199A GB 1488199 A GB1488199 A GB 1488199A GB 3336675 A GB3336675 A GB 3336675A GB 3336675 A GB3336675 A GB 3336675A GB 1488199 A GB1488199 A GB 1488199A
Authority
GB
United Kingdom
Prior art keywords
probe
pump
aug
immersed
switches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3336675A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pynford Ltd
Original Assignee
Pynford Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pynford Ltd filed Critical Pynford Ltd
Priority to GB3336675A priority Critical patent/GB1488199A/en
Publication of GB1488199A publication Critical patent/GB1488199A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

1488199 Liquid level control PYNFORD Ltd 27 Aug 1976 [11 Aug 1975 18 Aug 1975] 33366/75 and 34232/75 Heading G1H A waste water discharge system comprises a tank 1 and an electric pump 5 controlled by a contact at the end of a downwardly projecting probe 10 in a sheath 13 sealed at the top to form an air lock to keep the upper portion of the probe dry; the pump being switched on when water reaches the end of the probe. The system includes a second sheathed probe 9 in the tank which switches the pump off when the water level 18 falls below it and a probe 14 in a branch 16 of the pump outlet. The probe 10 switches the pump on for a short time and is then turned off unless probe 14 is immersed. Probe 9 may be omitted if the pump is energized for a predetermined period after either probe 10 or 14 is immersed. Sheaths 12, 13, and pipe 16 are of liquid repellant insulating material to assist in maintaining the upper portions of rods 9, 10, 14 dry and preventing short circuits.
GB3336675A 1976-08-27 1976-08-27 Drainage system Expired GB1488199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3336675A GB1488199A (en) 1976-08-27 1976-08-27 Drainage system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3336675A GB1488199A (en) 1976-08-27 1976-08-27 Drainage system

Publications (1)

Publication Number Publication Date
GB1488199A true GB1488199A (en) 1977-10-05

Family

ID=10351999

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3336675A Expired GB1488199A (en) 1976-08-27 1976-08-27 Drainage system

Country Status (1)

Country Link
GB (1) GB1488199A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002401A1 (en) * 1982-12-17 1984-06-21 Kevyn Barry Moore Water level monitor and/or alarm system for bilges
GB2137349A (en) * 1983-03-28 1984-10-03 Elvio Bernardi Discharge valve controlled by liquid level sensor
GB2149112A (en) * 1983-10-27 1985-06-05 Lucas Ind Plc Liquid level detector
GB2166870A (en) * 1984-07-30 1986-05-14 Dominic N Loiacono Liquid level detection
US4849739A (en) * 1984-07-30 1989-07-18 Ala Inc., A New Jersey Corporation Liquid detector for air pressure type fire sprinkler system
EP2874038A1 (en) * 2013-11-19 2015-05-20 Po-Hui Chen Automatic drainage device with a level controller

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002401A1 (en) * 1982-12-17 1984-06-21 Kevyn Barry Moore Water level monitor and/or alarm system for bilges
GB2137349A (en) * 1983-03-28 1984-10-03 Elvio Bernardi Discharge valve controlled by liquid level sensor
GB2149112A (en) * 1983-10-27 1985-06-05 Lucas Ind Plc Liquid level detector
GB2166870A (en) * 1984-07-30 1986-05-14 Dominic N Loiacono Liquid level detection
US4849739A (en) * 1984-07-30 1989-07-18 Ala Inc., A New Jersey Corporation Liquid detector for air pressure type fire sprinkler system
GB2166870B (en) * 1984-07-30 1989-07-19 Dominic N Loiacono Liquid detector for air pressure type fire sprinkler system
EP2874038A1 (en) * 2013-11-19 2015-05-20 Po-Hui Chen Automatic drainage device with a level controller

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee