GB337339A - Improvements in helical springs - Google Patents

Improvements in helical springs

Info

Publication number
GB337339A
GB337339A GB9948/30A GB994830A GB337339A GB 337339 A GB337339 A GB 337339A GB 9948/30 A GB9948/30 A GB 9948/30A GB 994830 A GB994830 A GB 994830A GB 337339 A GB337339 A GB 337339A
Authority
GB
United Kingdom
Prior art keywords
counter
sunk
ball valve
spring
helical springs
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
GB9948/30A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB337339A publication Critical patent/GB337339A/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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/042—Check valves with guided rigid valve members shaped as balls with a plurality of balls

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

337,339. Hesselman, K. J. E. April 22, 1929, [Convention date]. Helical springs used for example in connection with one-way ball valves are made with one or both ends counter-sunk slightly, the counter-sunk recess being concentric with the axis of the spring so that the ball valve when disengaged from its seat is not displaced laterally. The spring 11 used in connection with the lower ball valve 9 is counter-sunk at the ends in such a way that the ball remains concentric with its seat when not in contact therewith, while the upper spring 10, the ends of which are finished in the usual manner, tends to displace its ball valve laterally.
GB9948/30A 1929-04-22 1930-03-28 Improvements in helical springs Expired GB337339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE337339X 1929-04-22

Publications (1)

Publication Number Publication Date
GB337339A true GB337339A (en) 1930-10-30

Family

ID=20308268

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9948/30A Expired GB337339A (en) 1929-04-22 1930-03-28 Improvements in helical springs

Country Status (1)

Country Link
GB (1) GB337339A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493937A (en) * 1944-05-16 1950-01-10 Jeffrey Mfg Co Hydraulic reversing check valve
US2761468A (en) * 1951-06-27 1956-09-04 Gen Motors Corp Nonchattering fluid pressure relief valve
US3661167A (en) * 1970-05-25 1972-05-09 A & D Fabricating Co Chemical feed pump with improved valve means
WO2015079034A1 (en) * 2013-11-29 2015-06-04 Total Marketing Services Isolation valve having a vacuum chamber

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493937A (en) * 1944-05-16 1950-01-10 Jeffrey Mfg Co Hydraulic reversing check valve
US2761468A (en) * 1951-06-27 1956-09-04 Gen Motors Corp Nonchattering fluid pressure relief valve
US3661167A (en) * 1970-05-25 1972-05-09 A & D Fabricating Co Chemical feed pump with improved valve means
WO2015079034A1 (en) * 2013-11-29 2015-06-04 Total Marketing Services Isolation valve having a vacuum chamber
FR3014163A1 (en) * 2013-11-29 2015-06-05 Total Marketing Services STIRRUP TAP WITH DEAD CHAMBER
US10012317B2 (en) 2013-11-29 2018-07-03 Total Marketing Services Isolation valve with a dead chamber

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