GB868278A - A signalling device for connection into a conduit of a fluid system to detect fluid flow therein - Google Patents

A signalling device for connection into a conduit of a fluid system to detect fluid flow therein

Info

Publication number
GB868278A
GB868278A GB43858/59A GB4385859A GB868278A GB 868278 A GB868278 A GB 868278A GB 43858/59 A GB43858/59 A GB 43858/59A GB 4385859 A GB4385859 A GB 4385859A GB 868278 A GB868278 A GB 868278A
Authority
GB
United Kingdom
Prior art keywords
vane
conduit
water
pressure
shank
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
GB43858/59A
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.)
American District Telegraph Co
Original Assignee
American District Telegraph Co
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 American District Telegraph Co filed Critical American District Telegraph Co
Publication of GB868278A publication Critical patent/GB868278A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/0026—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using deflection of baffle-plates
    • G01P13/0033—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using deflection of baffle-plates with electrical coupling to the indicating device

Abstract

868,278. Fluid flow indicators. AMERICAN DISTRICT TELEGRAPH CO. Dec. 24, 1959 [Dec. 31, 1958], No. 43858/59. Class 69 (1). [Also in Group XXXVIII] In a sprinkler supervisory system a flexible vane 70 with a thickened or semi-rigid portion preferably formed as ribs 72 is inserted into a water supply conduit through a composite water-tight housing 10, 22 secured to the conduit 16 by a U-bolt. Any substantial flow of water, due, for example, to the opening of a sprinkler head, causes the vane 70 to be displaced about its pivot 64 until its shank 62 abuts against the neck 26 of the housing 22, the vane itself bending under the water-pressure until it lies against the side of the conduit, as shown at 60. The displacement of the shank 62 moves a rod 42 and thus releases a delay switch 56 which, after a predetermined time, closes contacts 57 to send a signal to a central station. Small pressure changes in the supply mains cause a flow which is insufficient to cause the delay switch 56 to close its contacts 57 before pressure on both sides of the vane 70 is equalized and a spring 44 restores the vane 70 to its normal vertical position. The speedy equalization of pressure is aided by a slight clearance between the vane 70 and the conduit 16 and by the flexibility, particularly of the edge portion, of the vane 70. The vane 70 is preferably made of polyethylene and because of its flexibility may be withdrawn for inspection without removing the housings 10, 22.
GB43858/59A 1958-12-31 1959-12-24 A signalling device for connection into a conduit of a fluid system to detect fluid flow therein Expired GB868278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US868278XA 1958-12-31 1958-12-31

Publications (1)

Publication Number Publication Date
GB868278A true GB868278A (en) 1961-05-17

Family

ID=22201180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43858/59A Expired GB868278A (en) 1958-12-31 1959-12-24 A signalling device for connection into a conduit of a fluid system to detect fluid flow therein

Country Status (1)

Country Link
GB (1) GB868278A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549231A1 (en) * 1982-03-22 1985-01-18 Emhart Ind MECHANISM FOR DETECTING THE FLOW OF A FLUID IN A CONDUIT
FR2575553A1 (en) * 1984-12-31 1986-07-04 Emhart Ind APPARATUS FOR DETECTING A FLUID FLOW
WO2000062081A1 (en) * 1999-04-08 2000-10-19 Interactive Technologies, Inc. Flow condition detector for a fluid flow system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549231A1 (en) * 1982-03-22 1985-01-18 Emhart Ind MECHANISM FOR DETECTING THE FLOW OF A FLUID IN A CONDUIT
FR2575553A1 (en) * 1984-12-31 1986-07-04 Emhart Ind APPARATUS FOR DETECTING A FLUID FLOW
WO2000062081A1 (en) * 1999-04-08 2000-10-19 Interactive Technologies, Inc. Flow condition detector for a fluid flow system

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