[특허]Non-jamming actuator system

[미국특허] Non-jamming actuator system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64C-013/42
출원번호	US-0932878 (1986-11-20)
발명자 / 주소	Jones Teddy L. (Cherry Valley IL)
출원인 / 주소	Sundstrand Corporation (Rockford IL 02)
인용정보	피인용 횟수 : 23 인용 특허 : 8

초록 ▼

A non-jamming electro-mechanical hydrostatic actuator system includes one embodiment in which a ballscrew assembly has a rotatable nut and an axially movable ballscrew. A motor rotates the nut to axially move the ballscrew. An actuator is operatively connected to a load to be actuated. A hydraulic system is coupled between the ballscrew and the actuator and includes a closed hydraulic circuit for statically trapping fluid in the circuit to effect movement of the actuator in response to movement of the ballscrew. The closed circuit is selectively opened to allow fluid flow in the circuit in the event of failure or jamming of the ballscrew assembly to allow reaction movement of the actuator in response to load forces. In another embodiment a rotary vaned assembly includes a cylinder housing a rotary vane, with the motor rotating the cylinder. The hydraulic system is coupled between the cylinder and the vane and includes a closed hydraulic circuit for statically trapping fluid in the circuit on opposite sides of the vane to effect conjoint rotation of the cylinder and the van. When the closed circuit is opened to allow fluid flow in the circuit the vane can rotate independently of the cylinder to allow reaction movement of the actuator in response to load forces.

대표청구항 ▼

A non-jamming actuator system, comprising: a ballscrew assembly including a rotatable nut and an axially movable ballscrew, said ballscrew having means thereon for cooperating with the nut and for producing axial movement of the ballscrew upon the nut being rotated, the ballscrew comprising a cylinder of a double-acting piston and cylinder device; drive means for rotating the nut; axially moveable actuator means operatively associated with a load to be actuated, the actuator means being coupled to a piston within a chamber defined by said cylinder, at least part of said cooperating means on said ballscrew axially overlapping said cylinder chamber; and a closed hydraulic circuit, including selectively operable valve means, communicating with the cylinder on opposite sides of the piston, whereby a closed condition of the valve means traps fluid in the circuit to effect movement of the actuator means in response to movement of the ballscrew and an open condition of the valve means allows fluid flow in the circuit in the event of failure or jamming of the ballscrew assembly to allow reaction movement of the actuator means in response to load forces.

이 특허에 인용된 특허 (8) 인용/피인용 타임라인 분석

Cronin Michael J. (Sherman Oaks CA), Electric actuator system with hydraulic coupling as protection against mechanical jamming.
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Conner Gary E. (San Jose CA), Fail safe redundant actuator.
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Kuroda Takeshi (Kure JPX), Fluid pressure actuator.
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Peruzzi Armando (Rome ITX), Hydraulic jack with mechanical safety lock.
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Gronbech Robert W. (Sheffield GB2) Lister Michael (Sheffield GB2), Hydro-mechanical actuator.
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Copperwheat Cyril (Ampthill GB2), Mechanical link members.
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Masclet Jean (Paris FRX), Mechanical-hydraulic damper for a load subject to shocks and vibrations.
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Crosser Jeffrey A. (Hampton IA), Mechanically lockable hydraulic cylinder jack.
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이 특허를 인용한 특허 (23) 인용/피인용 타임라인 분석

Jones, Teddy L.; Wallen, Gregory T.; Gibbons, Kevin; Villano, William E., Actuation system.
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Buerger,Stephen P.; Hogan,Neville, Actuation system with fluid transmission for interaction control and high force haptics.
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Hudson, Timothy; Tucker, Benjamin Thomas; Maxwell, Carl James, Actuator.
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Wildman, Eric, Actuator.
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Collins, Andrew John, Aircraft landing gear unlock actuator.
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Collins, Andrew John, Aircraft landing gear unlock actuator.
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Russ David E., Aircraft spoiler blow-down mechanism.
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Good, Mark Steven; Lassen, Matthew August; Renzelmann, Michael E.; Gardner, Mark J.; Lesyna, Mark William; Hill, Brian Curtis; Tyler, Nicholas Seth, Backup system.
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Falcou, G?rard; Mothier, G?rard Yves; Thieffry, Bruno Robert; Coda, Jean-Marie, Compensated actuator with optimized power.
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Nagai,Shigekazu; Saitoh,Akio; Yumiba,Hiroshi, Electric actuator.
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Mochizuki, Hiroaki; Kuribayashi, Hiroomi, Electric actuator with shock absorbing mechanism.
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Ueyama, Masayoshi; Higuchi, Ryoichi, Electromechanical actuator.
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Rodrigues Fernand,FRX, Electromechanical actuator of the type having a screw-and-nut system.
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Wingett, Paul T.; Hanlon, Casey; Potter, Calvin C., Flight control surface actuator assembly including a free trial mechanism.
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Durandeau Michel,FRX ; Foch Etienne,FRX, Hybrid control system for an aircraft aerodynamic surface.
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Buerger,Stephen P.; Hogan,Neville, Impedance shaping element for a control system.
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Allwein, Michael; Moore, Joseph; Daria, Aron Howard, Landing gear deployment systems and methods.
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Nagai Shigekazu (Yawara-mura JPX), Loading positioning apparatus.
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Quenerch'du, Marc; Charuel, Hervé; Jubert, Xavier, Mechanically-operating actuator with hydraulic damping.
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Sohn, John; Bree, Gary; Crociata, Paul, Method and apparatus of active dampening a powered closure system.
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Kimura Kunimasa,JPX ; Toyoda Shigehiro,JPX ; Murata Isao,JPX, Motor-operated cylinder.
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Cahayla, Jason R., Pneumatically actuated control surface for airframe body.
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Bucheton, Daniel; Charuel, Hervé, Telescopic actuator with a main rod and an auxiliary rod, and a method making use thereof.
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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] Non-jamming actuator system 원문보기