GB1286808A - Improvements in or relating to pressure indicating devices - Google Patents

Improvements in or relating to pressure indicating devices

Info

Publication number
GB1286808A
GB1286808A GB4863268A GB4863268A GB1286808A GB 1286808 A GB1286808 A GB 1286808A GB 4863268 A GB4863268 A GB 4863268A GB 4863268 A GB4863268 A GB 4863268A GB 1286808 A GB1286808 A GB 1286808A
Authority
GB
United Kingdom
Prior art keywords
pressure
annulus
spring
oct
fed
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
GB4863268A
Inventor
Janusz Gutkowski
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.)
BTR Industries Ltd
Original Assignee
BTR Industries 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 BTR Industries Ltd filed Critical BTR Industries Ltd
Priority to GB4863268A priority Critical patent/GB1286808A/en
Publication of GB1286808A publication Critical patent/GB1286808A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/16—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of pistons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1286808 Pressure indicator BTR INDUSTRIES Ltd 14 Oct 1969 [14 Oct 1968] 48632/68 Heading G1L In a pressure gauge a low pressure is fed through an orifice 28 to operate on the end face 29 of a magnetic member 25 which acts on one side of a spring loaded annulus 5 and a higher pressure is fed through bores 30, 31 to act on the other side of the annulus 5 and the arrangement is such that when the higher pressure acting on the annulus 5 exceeds the combined pressure force on face 29, the spring 8 and magnetic attraction between a pole piece 7 and a circuit through magnet 4, the member 25 and pole pieces 18, 20, move the assembly to the left and a spring 9 moves the pole 7 and a member 3 to the right indicating pressure once a cylindrical bi-metallic strip reaches a predetermined temperature to release a frictional grip on a collar 26 on member 3.
GB4863268A 1968-10-14 1968-10-14 Improvements in or relating to pressure indicating devices Expired GB1286808A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4863268A GB1286808A (en) 1968-10-14 1968-10-14 Improvements in or relating to pressure indicating devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4863268A GB1286808A (en) 1968-10-14 1968-10-14 Improvements in or relating to pressure indicating devices

Publications (1)

Publication Number Publication Date
GB1286808A true GB1286808A (en) 1972-08-23

Family

ID=10449336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4863268A Expired GB1286808A (en) 1968-10-14 1968-10-14 Improvements in or relating to pressure indicating devices

Country Status (1)

Country Link
GB (1) GB1286808A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499716A1 (en) * 1981-02-09 1982-08-13 Facet Enterprises DIFFERENTIAL PRESSURE INDICATOR DEVICE WITH THERMAL COMPENSATION
GB2152670A (en) * 1984-01-12 1985-08-07 Facet Enterprises Differential pressure indicating device
GB2189603A (en) * 1986-04-21 1987-10-28 Facet Enterprises Pressure differential indicator with non-mechanical thermal lockout

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499716A1 (en) * 1981-02-09 1982-08-13 Facet Enterprises DIFFERENTIAL PRESSURE INDICATOR DEVICE WITH THERMAL COMPENSATION
GB2152670A (en) * 1984-01-12 1985-08-07 Facet Enterprises Differential pressure indicating device
GB2189603A (en) * 1986-04-21 1987-10-28 Facet Enterprises Pressure differential indicator with non-mechanical thermal lockout
GB2189603B (en) * 1986-04-21 1989-11-29 Facet Enterprises Pressure differential indicator with non-mechanical thermal lockout

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Legal Events

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