GB2181519B - Spool valve - Google Patents

Spool valve

Info

Publication number
GB2181519B
GB2181519B GB8623938A GB8623938A GB2181519B GB 2181519 B GB2181519 B GB 2181519B GB 8623938 A GB8623938 A GB 8623938A GB 8623938 A GB8623938 A GB 8623938A GB 2181519 B GB2181519 B GB 2181519B
Authority
GB
United Kingdom
Prior art keywords
spool valve
spool
valve
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
GB8623938A
Other versions
GB8623938D0 (en
GB2181519A (en
Inventor
Michael David Baxter
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
Priority claimed from GB858524522A external-priority patent/GB8524522D0/en
Application filed by Individual filed Critical Individual
Priority to GB8623938A priority Critical patent/GB2181519B/en
Publication of GB8623938D0 publication Critical patent/GB8623938D0/en
Publication of GB2181519A publication Critical patent/GB2181519A/en
Application granted granted Critical
Publication of GB2181519B publication Critical patent/GB2181519B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/021—Valves for interconnecting the fluid chambers of an actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • F15B13/0403—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves a secondary valve member sliding within the main spool, e.g. for regeneration flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B2013/0413—Valve members; Fluid interconnections therefor with four or more positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
GB8623938A 1985-10-04 1986-10-06 Spool valve Expired GB2181519B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8623938A GB2181519B (en) 1985-10-04 1986-10-06 Spool valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858524522A GB8524522D0 (en) 1985-10-04 1985-10-04 Spool valve
GB8623938A GB2181519B (en) 1985-10-04 1986-10-06 Spool valve

Publications (3)

Publication Number Publication Date
GB8623938D0 GB8623938D0 (en) 1986-11-12
GB2181519A GB2181519A (en) 1987-04-23
GB2181519B true GB2181519B (en) 1989-11-29

Family

ID=26289849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8623938A Expired GB2181519B (en) 1985-10-04 1986-10-06 Spool valve

Country Status (1)

Country Link
GB (1) GB2181519B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2199115A (en) * 1986-11-27 1988-06-29 Michael David Baxter Spool valve
GB2227295B (en) * 1989-01-03 1993-01-13 Michael David Baxter Hydraulic directional control valve with regenerative flow check valve
DE69021706T2 (en) * 1989-06-26 1996-03-07 Komatsu Mfg Co Ltd HYDRAULIC CIRCUIT FOR OPERATING A MACHINE.
DE102006002920A1 (en) * 2006-01-20 2007-07-26 Robert Bosch Gmbh Hydraulic load control arrangement for operating tool, has area in which pressurizing medium flows from reverse to forward feed and provided with regeneration, and area of pressurizing medium provided without regeneration
DE102009021831A1 (en) 2009-05-19 2010-11-25 Robert Bosch Gmbh Way valve arrangement
US9810245B2 (en) 2013-03-15 2017-11-07 Habonim Industrial Valves & Actuators Ltd. Spring return actuator
US11473598B2 (en) 2019-10-25 2022-10-18 Woodward, Inc. Failsafe electro-hydraulic servo valve

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032908A (en) * 1964-07-17 1966-06-15 New York Air Brake Co Fluid distributing valves
GB1096610A (en) * 1965-08-26 1967-12-29 New York Air Brake Co Fluid flow control valves
GB1178093A (en) * 1967-10-20 1970-01-14 Gen Signal Corp Regenerative Valve Plunger
GB1373339A (en) * 1972-07-20 1974-11-13 Cross Mfg Inc Combined open-centre pressure control and regeneration valve
GB1421037A (en) * 1972-02-25 1976-01-14 Nordhydraulic Ab Valve assembly
GB1452486A (en) * 1972-07-19 1976-10-13 Cross Mfg Inc Hydraulic fluid flow control valve
GB1452886A (en) * 1973-09-02 1976-10-20 Corss Mfg Inc End section for a hydraulic fluid flow control valve
EP0088406A2 (en) * 1982-03-05 1983-09-14 General Signal Corporation Control valve for double-acting piston and cylinder assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032908A (en) * 1964-07-17 1966-06-15 New York Air Brake Co Fluid distributing valves
GB1096610A (en) * 1965-08-26 1967-12-29 New York Air Brake Co Fluid flow control valves
GB1178093A (en) * 1967-10-20 1970-01-14 Gen Signal Corp Regenerative Valve Plunger
GB1421037A (en) * 1972-02-25 1976-01-14 Nordhydraulic Ab Valve assembly
GB1452486A (en) * 1972-07-19 1976-10-13 Cross Mfg Inc Hydraulic fluid flow control valve
GB1373339A (en) * 1972-07-20 1974-11-13 Cross Mfg Inc Combined open-centre pressure control and regeneration valve
GB1452886A (en) * 1973-09-02 1976-10-20 Corss Mfg Inc End section for a hydraulic fluid flow control valve
EP0088406A2 (en) * 1982-03-05 1983-09-14 General Signal Corporation Control valve for double-acting piston and cylinder assembly

Also Published As

Publication number Publication date
GB8623938D0 (en) 1986-11-12
GB2181519A (en) 1987-04-23

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Legal Events

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

Effective date: 19961006