[특허]Servo-control valve

[미국특허] Servo-control valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F15B-013/044
출원번호	US-0133079 (1980-03-24)
우선권정보	FR-0007577 (1979-03-26)
발명자 / 주소	Bouvet Jean M. (Boulogne-Billancourt FRX) Berthou Claude (Fontenay le Fleury FRX) Jallas Michel (Garches FRX)
출원인 / 주소	Regie Nationale des Usines Renault (Boulogne-Billancourt FRX 07)
인용정보	피인용 횟수 : 30 인용 특허 : 2

초록 ▼

An electromagnetically controlled hydraulic servo-control valve includes a hydraulic slide activated by an electromagnet with a plunger. The distributed pressure hydraulically pushes the slide and the plunger toward each other. Constrictions in the hydraulic conduits attenuate oscillations. The plunger and the slide have slightly different cross-sections to provide a control loop for the distributed pressure, affecting the position of the side. Use of a polarized electromagnetic supplied by a current that ranges from a negative value to a positive value doubles the regulating capacity. To prevent hysteresis of the pressure curves, as a function of the current, the electro-magnet can be supplied by a pulsed current or an alternating current with a continuous component. The servo-control valve might be used in connection with an automatic gear box control.

대표청구항 ▼

A hydraulic servo-control valve comprising: a polarized electromagnet adapted for connection to an electric current source and having a movable shaft with a first plunger member on one end thereof and a second plunger member on the second end thereof and responsive to electric current of one polarity from the source for urging said shaft, said first plunger member and said second plunger member to move in a first direction and to electric current of opposite polarity for urging said shaft, said first plunger member and said second plunger member to move in the opposite direction; a slide member with a third plunger member on one end thereof and a fourth plunger member on the second end thereof, said first plunger member and said fourth plunger member being of different cross-sections; and means defining a housing having: (a) a first chamber with said first plunger member therein; (b) a second chamber with said second and third plunger members therein and in contact with each other; (c) a third chamber with said fourth plunger member therein; (d) said slide member aligned with said movable shaft; (e) spring means acting to oppose movement of said shaft and said slide members in the direction of the smaller cross-section plunger; (f) an inlet adapted for connection to a source of hydraulic fluid; (g) an outlet adapted for connection to a utilizer of pressurized hydraulic fluid; and (h) a plurality of conduits interconnecting said chambers, said inlet, and said outlet, for flow of hydraulic fluid therebetween, and subjecting said outlet to the hydraulic fluid pressure of said first and third chambers while substantially isolating said second chamber therefrom.

이 특허에 인용된 특허 (2) 인용/피인용 타임라인 분석

Bernhoft Gerald W. (Milwaukee WI), Air-oil amplifier.
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Lombard ; Claude Edmond ; Bouvet ; Jean-Marie, Electromagnetic actuator, notably for hydraulic servo-control valve.
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이 특허를 인용한 특허 (30) 인용/피인용 타임라인 분석

Fujitsugu Yutaka (Katsuta JPX) Ito Tomoo (Katsuta JPX) Uchida Tadao (Yamagata JPX), Closed loop type proportional electromagnetic valve for hydraulic control.
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Perach, Asi, Control valve assembly.
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Hfner Gnther (Stuttgart DEX) Noreikat Karl-Ernst (Esslingen DEX) Schmidt Hans-Dieter (Wendlingen DEX) Letsche Ulrich (Stuttgart DEX) Bauer Bernhard (Stuttgart DEX), Control valve, in particular an electrohydraulic control valve.
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Park,Jungho, Electro-magnetic actuator for torque coupling with variable pressure-control spool valve.
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Alexander Dan, Electrohydraulic proportional pressure reducing-relieving valve.
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Muruyama Jun (Kawasaki JPX) Yamashita Koji (Kawasaki JPX), Flow rate control valve device and flow force reduction structure.
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Miki Nobuaki,JPX ; Yamamoto Haruki,JPX, Linear solenoid valve.
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Wang Jia ; Tackes John N. ; Alexander Dan, Low pressure solenoid valve.
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Sato Makoto (Wako JPX), Method and apparatus for controlling hydraulic braking pressure for a vehicle.
상세보기
Sato Makoto (Wako JPX), Method for controlling hydraulic braking pressure for a vehicle.
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Dekhtyar Iosif, Pressure compensated flow control valve.
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Suzuki Akira (Aichi JPX) Tanaka Katsuya (Aichi JPX), Pressure control valve.
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Suzuki Akira (Aichi JPX) Tanaka Katsuya (Aichi JPX), Pressure control valve.
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Loup Ronald L. (Clarkson MI), Pressure reducing and regulating valve.
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Bartholomaus Reiner (Neuendorf DEX), Pressure reducing valve.
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Imhof Rainer (Frammersbach DEX), Pressure regulating valve.
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Inokuchi Iwane (Kanagawa JPX), Proportional pressure reducing valve.
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Hamid Najmolhoda ; David L. Seid ; David A. Nezwek ; John A. Cruden, Jr., Proportional variable force solenoid control valve with armature damping.
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Najmolhoda Hamid ; Seid David L. ; Nezwek David A. ; Cruden ; Jr. John A., Proportional variable force solenoid control valve with armature damping.
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Abel Stephen G. (Mesa AZ), Servo system method and apparatus, servo valve apparatus therefor and method of making same.
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Anderson, Robert Alan, Solenoid controlled valve.
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Robert Alan Anderson GB, Solenoid controlled valve.
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Zheng David Lou, Solenoid operated hydraulic control valve.
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Segi, Masaya; Suzuki, Mikio; Suzuki, Masaru, Solenoid valve.
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Kobayashi Kouji (Toyota JPX) Miki Nobuaki (Kariya JPX) Suzuki Akira (Obu JPX), Solenoid-operated pressure control valve.
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Garcia Gary L. (Newark NY), Spool drive for pressure regulating, proportional solenoid valve.
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Hilzendegen, Philipp; Bruck, Peter, Valve, and the use thereof for a clutch.
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Bruck, Peter; Hillesheim, Thorsten, Valve, especially a pressure control valve.
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Bruck, Peter; Albert, Hermann, Valve, especially proportional pressure control valve.
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Miller Ellsworth S. (Rochester Hills MI) Slavin Michael (Caseville MI) Ling Ching C. (Plymouth MI), Variable force solenoid pressure regulator for electronic transmission controller.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Servo-control valve 원문보기