GB1283950A - A reciprocable spool valve with means for preventing sticking - Google Patents

A reciprocable spool valve with means for preventing sticking

Info

Publication number
GB1283950A
GB1283950A GB5986369A GB5986369A GB1283950A GB 1283950 A GB1283950 A GB 1283950A GB 5986369 A GB5986369 A GB 5986369A GB 5986369 A GB5986369 A GB 5986369A GB 1283950 A GB1283950 A GB 1283950A
Authority
GB
United Kingdom
Prior art keywords
spool valve
grooves
spool
dec
preventing sticking
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
GB5986369A
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.)
Sumitomo Precision Products Co Ltd
Original Assignee
Sumitomo Precision Products Co 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 Sumitomo Precision Products Co Ltd filed Critical Sumitomo Precision Products Co Ltd
Publication of GB1283950A publication Critical patent/GB1283950A/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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0708—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising means to avoid jamming of the slide or means to modify the flow

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

1283950 Valves SUMITOMO PRECISION PRODUCTS CO Ltd 8 Dec 1969 [28 Dec 1968] 59863/69 Heading F2V A reciprocable spool valve has a series of annular grooves 12 separated by lands, each having a width of less than 0À5 mm. so that there is a sufficient number of grooves per unit length to prevent the spool sticking. The grooves may have any of the cross-sectional shapes shown in Fig. 4 and may alternatively be formed in the spool bore. The valve may control the oil supply to a cylinder 14 and be actuated by an electromagnet against the action of centralizing springs.
GB5986369A 1968-12-28 1969-12-08 A reciprocable spool valve with means for preventing sticking Expired GB1283950A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP105468 1968-12-28

Publications (1)

Publication Number Publication Date
GB1283950A true GB1283950A (en) 1972-08-02

Family

ID=11490818

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5986369A Expired GB1283950A (en) 1968-12-28 1969-12-08 A reciprocable spool valve with means for preventing sticking

Country Status (2)

Country Link
CH (1) CH493771A (en)
GB (1) GB1283950A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158557A (en) * 1984-05-07 1985-11-13 Smith International Low noise valve
GB2180627A (en) * 1981-11-12 1987-04-01 Mac Valves Inc Direct solenoid operated valve with minimal tolerance accumulation
USRE33053E (en) * 1984-05-07 1989-09-12 Cameron Iron Works Usa Inc. Low noise valve
GB2325725A (en) * 1997-05-23 1998-12-02 Smiths Industries Plc Hydraulic valves and systems
CN103511678A (en) * 2013-09-26 2014-01-15 番禺珠江钢管（珠海）有限公司 Direct-acting overflow valve and method for establishing and releasing pressure thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807454A (en) * 1972-12-15 1974-04-30 Gen Signal Corp Low effort plunger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180627A (en) * 1981-11-12 1987-04-01 Mac Valves Inc Direct solenoid operated valve with minimal tolerance accumulation
GB2180627B (en) * 1981-11-12 1989-08-23 Mac Valves Inc Direct solenoid operated valve with minimal tolerance accumulation
GB2158557A (en) * 1984-05-07 1985-11-13 Smith International Low noise valve
USRE33053E (en) * 1984-05-07 1989-09-12 Cameron Iron Works Usa Inc. Low noise valve
GB2325725A (en) * 1997-05-23 1998-12-02 Smiths Industries Plc Hydraulic valves and systems
US5992294A (en) * 1997-05-23 1999-11-30 Smiths Industries Public Limited Company Hydraulic valves and systems
GB2325725B (en) * 1997-05-23 2001-06-27 Smiths Industries Plc Hydraulic valves and systems
CN103511678A (en) * 2013-09-26 2014-01-15 番禺珠江钢管（珠海）有限公司 Direct-acting overflow valve and method for establishing and releasing pressure thereof

Also Published As

Publication number Publication date
CH493771A (en) 1970-07-15

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Legal Events

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