GB720211A - Improvements in or relating to valves - Google Patents

Improvements in or relating to valves

Info

Publication number
GB720211A
GB720211A GB999552A GB999552A GB720211A GB 720211 A GB720211 A GB 720211A GB 999552 A GB999552 A GB 999552A GB 999552 A GB999552 A GB 999552A GB 720211 A GB720211 A GB 720211A
Authority
GB
United Kingdom
Prior art keywords
polythene
april
valves
relating
reheating
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
GB999552A
Inventor
James Francis Duncan
Donovan Teighe Warren
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB999552A priority Critical patent/GB720211A/en
Publication of GB720211A publication Critical patent/GB720211A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
    • F16K7/16—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being mechanically actuated, e.g. by screw-spindle or cam

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

720,211. Springs. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 21, 1953 [April 21, 1952; Nov. 7, 1952], Nos. 9995/52 and 28048/52. Drawings to Specification. Class 108 (3). [Also in Group XXIX] A helical steel spring loading a valve closure member is coated with polythene by heating it to a temperature above the softening point of polythene, immersing it in powdered polythene, and reheating it to obtain an adherent layer.
GB999552A 1952-04-21 1952-04-21 Improvements in or relating to valves Expired GB720211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB999552A GB720211A (en) 1952-04-21 1952-04-21 Improvements in or relating to valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB999552A GB720211A (en) 1952-04-21 1952-04-21 Improvements in or relating to valves

Publications (1)

Publication Number Publication Date
GB720211A true GB720211A (en) 1954-12-15

Family

ID=9882627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB999552A Expired GB720211A (en) 1952-04-21 1952-04-21 Improvements in or relating to valves

Country Status (1)

Country Link
GB (1) GB720211A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833512A (en) * 1955-12-22 1958-05-06 Nat Lab Inc Faucet assembly
US4860793A (en) * 1986-08-19 1989-08-29 Hewlett-Packard Mixing valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833512A (en) * 1955-12-22 1958-05-06 Nat Lab Inc Faucet assembly
US4860793A (en) * 1986-08-19 1989-08-29 Hewlett-Packard Mixing valve

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