EP0056024A4 - Soupape de reduction de pression avec tige flottante pour event d'appoint. - Google Patents

Soupape de reduction de pression avec tige flottante pour event d'appoint.

Info

Publication number: EP0056024A4
Authority: EP; European Patent Office
Prior art keywords: valve; spool; fluid; recess; valve member
Prior art date: 1980-06-16
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.): Granted

Application number

EP19810900691

Other languages

German (de)

English (en)

Other versions

EP0056024A1 (fr

EP0056024B1 (fr

Inventor

Kurt B Melocik

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.)

Caterpillar Inc

Original Assignee

Caterpillar Tractor Co

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.)

1980-06-16

Filing date

1980-06-16

Publication date

1983-10-06

1980-06-16 Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co

1982-07-21 Publication of EP0056024A1 publication Critical patent/EP0056024A1/fr

1983-10-06 Publication of EP0056024A4 publication Critical patent/EP0056024A4/fr

1985-08-14 Application granted granted Critical

1985-08-14 Publication of EP0056024B1 publication Critical patent/EP0056024B1/fr

Status 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
- F15B13/02—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
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
- F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks

Definitions

the improved pressure regulating pilot valve 10 is arranged to provide an improved means for permitting the system to operate in a float condition wherein the piston 13 may float in the cylinder 14.
-the pilot valve 10 is arranged to vent the make-up valve 84 and maintain spool 68 in its shifted position so that psurized fluid can move past the make ⁇ up valve and allow intercommuncation between the pum , tank and cylinder lines.
spool 26 is provided with an annular, radially outwardly opening recess 98 which is in communication with a flow passage 99 in the valve body 24 to which conduit 92 is connected.

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Fluid Mechanics (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Multiple-Way Valves (AREA)
Servomotors (AREA)
Safety Valves (AREA)

EP81900691A 1980-06-16 1980-06-16 Soupape de reduction de pression avec tige flottante pour event d'appoint Expired EP0056024B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/US1980/000765 WO1981003686A1 (fr)	1980-06-16	1980-06-16	Soupape de reduction de pression avec tige flottante pour event d'appoint

Publications (3)

Publication Number	Publication Date
EP0056024A1 EP0056024A1 (fr)	1982-07-21
EP0056024A4 true EP0056024A4 (fr)	1983-10-06
EP0056024B1 EP0056024B1 (fr)	1985-08-14

Family

ID=22154399

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP81900691A Expired EP0056024B1 (fr)	1980-06-16	1980-06-16	Soupape de reduction de pression avec tige flottante pour event d'appoint

Country Status (9)

Country	Link
EP (1)	EP0056024B1 (fr)
JP (1)	JPH0139482B2 (fr)
BE (1)	BE888847A (fr)
BR (1)	BR8009084A (fr)
DE (1)	DE3070995D1 (fr)
IT (1)	IT1189018B (fr)
MX (1)	MX155968A (fr)
SG (1)	SG17287G (fr)
WO (1)	WO1981003686A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3333745A1 (de) *	1983-09-17	1985-04-04	P.A. Rentrop Hubbert & Wagner Fahrzeugausstattungen GmbH & Co KG, 3060 Stadthagen	Druckmittel-verteiler
FR2793532B1 (fr) *	1999-05-12	2001-08-03	Mannesmann Rexroth Sa	Dispositif distributeur de fluide notamment pour telecommande hydraulique
EP2951442B1 (fr)	2013-01-31	2018-12-26	Parker Hannifin Corporation	Distributeur avec bypass pour une augmentation de débit en cas de conditions de pression réduite
CN117249130B (zh) *	2023-08-29	2024-11-12	湖南凯恩利液压机械制造有限公司	一种先导阀体总成及液压机械

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3817153A (en) *	1971-09-29	1974-06-18	Rexroth Gmbh G L	Hydraulic control circuit
US3987703A (en) *	1974-08-12	1976-10-26	Caterpillar Tractor Co.	Combined restrictor and dead engine lowering valve
GB1494400A (en) *	1974-11-07	1977-12-07	Nordhydraulic Ab	Device for hydraulic control of a centered multiposition directional control valve

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1939293A1 (de) *	1969-08-01	1971-02-11	Kracht Pumpen Motoren	Druckregler
DE2152133B1 (de) *	1971-10-20	1973-02-22	Rexroth Gmbh G L	Hydraulisch betaetigtes steuerventil
FR2236101A1 (en) *	1973-07-05	1975-01-31	Sigma Diesel	Hydraulic actuator arm - spring system and valve ports gives balance and sense of feel to operator
US3840049A (en) *	1973-08-08	1974-10-08	Caterpillar Tractor Co	Compact fluid motor control system with float position
FR2376978A1 (fr) *	1977-01-06	1978-08-04	Rexroth Sigma	Perfectionnements aux dispositifs distributeurs de fluide, notamment pour telecommande hydraulique

1980
- 1980-06-16 WO PCT/US1980/000765 patent/WO1981003686A1/fr not_active Ceased
- 1980-06-16 DE DE8181900691T patent/DE3070995D1/de not_active Expired
- 1980-06-16 BR BR8009084A patent/BR8009084A/pt unknown
- 1980-06-16 JP JP56500969A patent/JPH0139482B2/ja not_active Expired
- 1980-06-16 MX MX187596A patent/MX155968A/es unknown
- 1980-06-16 EP EP81900691A patent/EP0056024B1/fr not_active Expired
1981
- 1981-05-19 BE BE1/10225A patent/BE888847A/nl not_active IP Right Cessation
- 1981-06-02 IT IT22087/81A patent/IT1189018B/it active
1987
- 1987-02-20 SG SG172/87A patent/SG17287G/en unknown

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3817153A (en) *	1971-09-29	1974-06-18	Rexroth Gmbh G L	Hydraulic control circuit
US3987703A (en) *	1974-08-12	1976-10-26	Caterpillar Tractor Co.	Combined restrictor and dead engine lowering valve
GB1494400A (en) *	1974-11-07	1977-12-07	Nordhydraulic Ab	Device for hydraulic control of a centered multiposition directional control valve

Also Published As

Publication number	Publication date
SG17287G (en)	1987-07-24
IT1189018B (it)	1988-01-28
DE3070995D1 (en)	1985-09-19
IT8122087A1 (it)	1982-12-02
IT8122087A0 (it)	1981-06-02
JPH0139482B2 (fr)	1989-08-22
EP0056024A1 (fr)	1982-07-21
JPS57500842A (fr)	1982-05-13
MX155968A (es)	1988-06-03
WO1981003686A1 (fr)	1981-12-24
BR8009084A (pt)	1982-04-27
BE888847A (nl)	1981-11-19
EP0056024B1 (fr)	1985-08-14

Legal Events

Date	Code	Title	Description
1982-05-19	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1982-07-21	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE FR GB
1982-09-08	17P	Request for examination filed	Effective date: 19820624
1982-11-24	RBV	Designated contracting states (corrected)	Designated state(s): DE FR GB
1985-06-14	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1985-08-14	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB
1985-09-19	REF	Corresponds to:	Ref document number: 3070995 Country of ref document: DE Date of ref document: 19850919
1985-10-04	ET	Fr: translation filed
1986-06-10	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1986-06-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1986-07-30	26N	No opposition filed
1986-08-06	REG	Reference to a national code	Ref country code: GB Ref legal event code: 732
1987-11-13	REG	Reference to a national code	Ref country code: FR Ref legal event code: TP
1993-05-04	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19930504 Year of fee payment: 14
1993-05-11	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19930511 Year of fee payment: 14
1993-06-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19930609 Year of fee payment: 14
1994-06-16	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19940616
1995-02-15	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19940616
1995-02-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19950228
1995-03-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19950301
1995-04-28	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
CA2119616C (fr)	1998-09-01	Distributeur selectif avec flotteur
EP0545925B1 (fr)	1995-05-10	Soupape de compensation de pression et de controle de charge
EP0900962A2 (fr)	1999-03-10	Electrovanne pilote et système hydraulique utilisant la même
US4354527A (en)	1982-10-19	Control system for pilot operated valve
US4509406A (en)	1985-04-09	Pressure reducing valve for dead engine lowering
US4088151A (en)	1978-05-09	Cylinder locking apparatus
US3911942A (en)	1975-10-14	Compensated multifunction hydraulic system
US4341243A (en)	1982-07-27	Pressure reducing valve with floating stem for make-up vent
US4498847A (en)	1985-02-12	Control system for variable displacement hydraulic pumps
JP3549126B2 (ja)	2004-08-04	方向制御弁
US4362089A (en)	1982-12-07	Valve system
WO1981003686A1 (fr)	1981-12-24	Soupape de reduction de pression avec tige flottante pour event d'appoint
EP0147392B1 (fr)	1987-04-08	Assemblage de soupape de commande d'ecoulement a reponse rapide
US3861145A (en)	1975-01-21	Multiple hydraulic control circuits with pressure compensated flow control and a single variable delivery pump
US3924656A (en)	1975-12-09	Direction control valve having float mode
US3160076A (en)	1964-12-08	Fluid system and relief valve assembly therefor
US3862645A (en)	1975-01-28	Pilot control valve
WO1979000907A1 (fr)	1979-11-15	Soupape de commande avec by-pass
EP0056369B1 (fr)	1985-08-07	Soupape de reduction de pression pour l'abaissement d'une charge en cas de panne
CA1154349A (fr)	1983-09-27	Detendeur a tige libre pour prise d'air
EP0402355B1 (fr)	1993-02-03	Soupape primaire de dosage a pression equilibree
USRE25147E (en)	1962-03-27	krehbiel
EP0053608B1 (fr)	1985-08-21	Systeme de vanne
US2653624A (en)	1953-09-29	Sequence valve
CA1170543A (fr)	1984-07-10	Soupape de detente pour abaisseur de charges a moteur cale