GB1444613A – Control valve with flow control means
– Google Patents
GB1444613A – Control valve with flow control means
– Google Patents
Control valve with flow control means
Info
Publication number
GB1444613A
GB1444613A
GB4490073A
GB4490073A
GB1444613A
GB 1444613 A
GB1444613 A
GB 1444613A
GB 4490073 A
GB4490073 A
GB 4490073A
GB 4490073 A
GB4490073 A
GB 4490073A
GB 1444613 A
GB1444613 A
GB 1444613A
Authority
GB
United Kingdom
Prior art keywords
valve
passage
spool
pressure
inlet
Prior art date
1972-10-30
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
GB4490073A
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.)
HYDRAULIC INDUSTRIES
Original Assignee
HYDRAULIC INDUSTRIES
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.)
1972-10-30
Filing date
1973-09-25
Publication date
1976-08-04
1973-09-25
Application filed by HYDRAULIC INDUSTRIES
filed
Critical
HYDRAULIC INDUSTRIES
1976-08-04
Publication of GB1444613A
publication
Critical
patent/GB1444613A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F15B13/02—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
F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/00—Fluid handling
Y10T137/8593—Systems
Y10T137/87169—Supply and exhaust
Y10T137/87177—With bypass
Y10T137/87185—Controlled by supply or exhaust valve
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T137/00—Fluid handling
Y10T137/8593—Systems
Y10T137/87169—Supply and exhaust
Y10T137/87233—Biased exhaust valve
Abstract
1444613 Valves HYDRAULIC INDUSTRIES Inc 25 Sept 1973 [30 Oct 1972] 44900/73 Heading F2V A spool valve which is operable to divert fluid normally flowing from an inlet 13 to a passage 18 downstream of the valve bore and thence via a return line 20 or 21 to a reservoir 15, to either of motor ports M1 or M2 is provided with a regulating valve 35 which controls the flow from passage 18 to the reservoir depending on the pressure in the inlet 13 as well as the pressure in the passage 18 in order to maintain a uniform pressure drop between inlet 13 and passage 18 and hence a constant rate of fluid to the motor independent of load variations. Since the valve 35 in the Fig. 1 embodiment has equal areas, a relief valve 36 is provided to produce a desired pressure difference. A valve of unequal area is described which does not require a relief valve. The valve 35 may be biased by a spring to the fully open position. In another embodiment the regulating valve member is spool-shaped (Fig. 4) and may be spring-biased. In a further embodiment (Fig. 6) the pressure from the downstream passage is fed to the end of a spool adjacent a biasing spring by a spool passage 114. The regulating valve and associated passages may be formed as a unitary block adapted to be mated with and be attached to a standard spool valve block.
GB4490073A
1972-10-30
1973-09-25
Control valve with flow control means
Expired
GB1444613A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US05/302,594
US4178962A
(en)
1972-10-30
1972-10-30
Control valve with flow control means
Publications (1)
Publication Number
Publication Date
GB1444613A
true
GB1444613A
(en)
1976-08-04
Family
ID=23168421
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4490073A
Expired
GB1444613A
(en)
1972-10-30
1973-09-25
Control valve with flow control means
Country Status (4)
Country
Link
US
(1)
US4178962A
(en)
JP
(1)
JPS5817901B2
(en)
DE
(1)
DE2308376A1
(en)
GB
(1)
GB1444613A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2185092A
(en)
*
1986-01-08
1987-07-08
Trans Nordic Hydraulics Limite
Directional control spool valve
Families Citing this family (11)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4036245A
(en)
*
1975-12-29
1977-07-19
Sundstrand Corporation
Pressure compensated hydraulic control valve
DE2908018A1
(en)
*
1979-03-01
1980-09-11
Barmag Barmer Maschf
HYDRAULIC CONTROL DEVICE FOR LOAD-INDEPENDENT FLOW CONTROL
JPS5623705U
(en)
*
1979-08-01
1981-03-03
JPS57116917A
(en)
*
1981-01-13
1982-07-21
Toshiba Mach Co Ltd
Compound control valve with valve for attachment
EP0135751B1
(en)
*
1983-09-20
1986-12-03
HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG
Hydraulic device
JPS6189404U
(en)
*
1984-11-15
1986-06-11
US4569367A
(en)
*
1985-01-14
1986-02-11
Commercial Shearing, Inc.
Hydraulic valve inlet unloaders
US6244158B1
(en)
1998-01-06
2001-06-12
Fps, Inc.
Open center hydraulic system with reduced interaction between branches
CN102166836B
(en)
*
2011-01-25
2012-12-26
枣庄天源气动液压制造有限公司
Hydraulic system of single face machine
JP6338428B2
(en)
*
2014-04-11
2018-06-06
Ｋｙｂ株式会社
Valve structure
CN109268332B
(en)
*
2018-11-15
2020-06-09
广西柳工机械股份有限公司
High-low pressure unloading valve and hydraulic system of loader
Family Cites Families (14)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CA718255A
(en)
*
1965-09-21
Borg-Warner Corporation
Pressure compensated directional control valve
US2255787A
(en)
*
1941-03-06
1941-09-16
Manly Corp
Fluid pressure device and system
GB656622A
(en)
*
1947-08-26
1951-08-29
Bendix Aviat Corp
Improvements in or relating to control valves
US2837107A
(en)
*
1955-12-27
1958-06-03
Allis Chalmers Mfg Co
Multiple speed hydraulic valve
US2965133A
(en)
*
1959-01-08
1960-12-20
New York Air Brake Co
Valve
US3145734A
(en)
*
1961-10-06
1964-08-25
Borg Warner
Pressure compensated flow control valve
US3229717A
(en)
*
1963-03-21
1966-01-18
New York Air Brake Co
Combined directional control and priority valve
US3304953A
(en)
*
1964-01-02
1967-02-21
Ohio Brass Co
Fluid power system and valve mechanisms therefor
CH444601A
(en)
*
1966-12-13
1967-09-30
Beringer Hydraulik Gmbh
Control device for hydraulically operated equipment
US3613711A
(en)
*
1969-12-23
1971-10-19
Koehring Co
Fluid motor control mechanism
US3675676A
(en)
*
1971-04-09
1972-07-11
Sperry Rand Corp
Power transmission
US3788077A
(en)
*
1972-07-13
1974-01-29
Borg Warner
Open center control of variable pumps
US4139021A
(en)
*
1972-07-19
1979-02-13
Cross Manufacturing, Inc.
Hydraulic control instrumentality
US3771558A
(en)
*
1972-07-20
1973-11-13
Cross Manuf Inc
Combined open-center pressure control and regeneration valve
1972
1972-10-30
US
US05/302,594
patent/US4178962A/en
not_active
Expired – Lifetime
1973
1973-02-21
DE
DE19732308376
patent/DE2308376A1/en
not_active
Withdrawn
1973-05-07
JP
JP48050548A
patent/JPS5817901B2/en
not_active
Expired
1973-09-25
GB
GB4490073A
patent/GB1444613A/en
not_active
Expired
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2185092A
(en)
*
1986-01-08
1987-07-08
Trans Nordic Hydraulics Limite
Directional control spool valve
GB2185092B
(en)
*
1986-01-08
1990-07-04
Trans Nordic Hydraulics Limite
Directional control spool valve
Also Published As
Publication number
Publication date
JPS5817901B2
(en)
1983-04-09
US4178962A
(en)
1979-12-18
DE2308376A1
(en)
1974-05-09
JPS4977232A
(en)
1974-07-25
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Legal Events
Date
Code
Title
Description
1976-12-15
PS
Patent sealed [section 19, patents act 1949]
1978-07-12
PLE
Entries relating assignments, transmissions, licences in the register of patents
1979-12-28
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1981-04-29
PCNP
Patent ceased through non-payment of renewal fee
