GB1287705A - A non-return valve - Google Patents

A non-return valve

Info

Publication number
GB1287705A
GB1287705A GB32371A GB32371A GB1287705A GB 1287705 A GB1287705 A GB 1287705A GB 32371 A GB32371 A GB 32371A GB 32371 A GB32371 A GB 32371A GB 1287705 A GB1287705 A GB 1287705A
Authority
GB
United Kingdom
Prior art keywords
valve
load
return
piston
supply pressure
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
GB32371A
Inventor
Friedrich-Wilhelm Hofer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1287705A publication Critical patent/GB1287705A/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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0433—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with vibration preventing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

1287705 Valves ROBERT BOSCH GmbH 4 Jan 1971 [3 Sept 1970] 323/71 Heading F2V [Also in Division G3] A non-return valve, adapted to be positioned between a supply pressure control valve 33, 39 and a load 49, has a closure member 8 loaded by a spring 9 which has a movable abutment constituted by a piston 11. This piston is of greater diameter than the seat opening 3 and is subject to the pressure in a return line 18. It also has a stem 12 which positively holds the closure member 8 seated when the supply pressure control valve is in a neutral position as shown and wherein the supply pressure is by-passed through a return chamber 31. To raise the load piston 51, hand lever 69 is turned clockwise, moving control pilot valve 33 to the left through diamond shaped linkage member 66. This vents the interior of the pilot valve to drain through ports 35, 36 and return line 27. Piston control valve 39 moves to the left, cutting off the return through passage 42, 42 and chamber 31. Check valve 6 now opens to supply the load. A positional feedback from the load through control linkage 73, 71 and linkage member 66.returns the valve to neutral. When hand lever 69 is moved in the reverse direction to lower the load, a tappet 61 on the pilot valve opens a poppet valve 62 which connect the load cylinder with return chamber 31 through passage 56.
GB32371A 1970-09-03 1971-01-04 A non-return valve Expired GB1287705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19707032850 DE7032850U (en) 1970-09-03 1970-09-03 CHECK VALVE.

Publications (1)

Publication Number Publication Date
GB1287705A true GB1287705A (en) 1972-09-06

Family

ID=6614112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32371A Expired GB1287705A (en) 1970-09-03 1971-01-04 A non-return valve

Country Status (5)

Country Link
AT (1) AT316238B (en)
BE (1) BE772109A (en)
DE (1) DE7032850U (en)
FR (1) FR2107190A5 (en)
GB (1) GB1287705A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201012A (en) * 1987-02-12 1988-08-17 Hans Schoen An electrohydraulic control system
CN111569165A (en) * 2020-05-26 2020-08-25 上海市嘉定区中心医院(上海健康医学院附属嘉定区中心医院、上海交通大学医学院附属仁济医院嘉定分院) Negative pressure suction apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201012A (en) * 1987-02-12 1988-08-17 Hans Schoen An electrohydraulic control system
GB2201012B (en) * 1987-02-12 1990-09-26 Hans Schoen An electrohydraulic control system
CN111569165A (en) * 2020-05-26 2020-08-25 上海市嘉定区中心医院(上海健康医学院附属嘉定区中心医院、上海交通大学医学院附属仁济医院嘉定分院) Negative pressure suction apparatus
CN111569165B (en) * 2020-05-26 2023-01-17 上海市嘉定区中心医院(上海健康医学院附属嘉定区中心医院、上海交通大学医学院附属仁济医院嘉定分院) Negative pressure suction apparatus

Also Published As

Publication number Publication date
DE7032850U (en) 1972-02-03
BE772109A (en) 1972-01-17
FR2107190A5 (en) 1972-05-05
AT316238B (en) 1974-06-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees