[특허]Axial piston pump

[미국특허] Axial piston pump 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04B-001/12
출원번호	US-0357093 (1999-07-19)
우선권정보	JP0027747 (1999-02-04)
발명자 / 주소	Umeda Tokihiko,JPX Kawabata Sachio,JPX Matsuda Kazuhide,JPX Sakai Ryuji,JPX
출원인 / 주소	Kawasaki Jukogyo Kabushiki Kaisha, JPX
인용정보	피인용 횟수 : 4 인용 특허 : 12

초록 ▼

An axial piston pump has a structure in which an opening of one of the piston chambers starts overlapping with an opening portion when a pressure of another piston chamber reaches a pressure of a discharge port, and an opening of one of the piston chambers starts overlapping with an opening when a p

대표청구항 ▼

[ We claim:] [1.] An axial piston pump comprising a plurality of pistons, a cylinder block provided with a plurality of piston chambers in which the pistons slide, a valving element having a suction port and a discharge port formed therein, and a casing accommodating the cylinder block,the axial piston pump causing the pistons to reciprocate while relatively rotating the cylinder block with respect to the valving element, thereby receiving a fluid from the suction port into the piston chamber and discharging the fluid to the discharge port, the axial piston pump comprising:a first opening portion formed in the valving element connected to the discharge port configured for making a pressure fluctuation curve of each of the piston chambers smooth in an early stage of a pressure rise process, a second opening portion formed in the valving element to be connected to at least one of the suction port and an inside of the casing, for making the pressure fluctuation curve of the piston chamber smooth in an early stage of a pressure drop process, a first bypass port formed in the valving element communicating with at least one of the suction port and the inside of the casing, and a second bypass port formed in the valving element communicating with the discharge port, whereinan opening of the first bypass port is positioned so as to start overlapping with an opening of the piston chamber before a pressure of the piston chamber reaches that of the discharge port after the opening of the piston chamber starts to overlap with the first opening portion,an opening of the second bypass port is positioned at such a place as to start overlapping with an opening of the piston chamber before a pressure of the piston chamber reaches that of the suction port after the opening of the piston chamber starts to overlap with the second opening portion,an opening of one of the piston chambers starts overlapping with the second opening portion when a pressure of another piston chamber substantially reaches that of the discharge port, andan opening of one of the piston chambers starts overlapping with the first opening portion when a pressure of another piston chamber substantially reaches that of the suction port.

이 특허에 인용된 특허 (12) 인용/피인용 타임라인 분석

Berthold Heinz (Horb DEX) Beck Josef (Haigerloch DEX) Lotter Manfred (Neu-Ulm DEX), Axial piston machine of the swashplate or bent axis type having slot control and pressure balancing passages.
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Suzuki Shigeru (Kariya JPX) Goto Kunifumi (Kariya JPX) Minami Wataru (Kariya JPX), Axial piston pump having fixed slant cam plate for causing reciprocation of pistons.
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Watts Thomas A. (Ottawa IL), Hydraulic axial piston unit with multiple valve plates.
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Stephens ; William T., Hydraulic pump or motor.
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Takai Kazuhiko,JPX, Piston-type compressor with a lubricating system.
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Tovey Peter (Jackson MS), Power transmission.
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Kimura Kazuya (Kariya JPX) Hidaka Shigeyuki (Kariya JPX) Mizutani Hideki (Kariya JPX) Takeichi Toru (Kariya JPX), Reciprocating-piston type refrigerant compressor with an improved rotary-type suction-valve mechanism.
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Skinner Timothy J. (E. Amherst NY), Refrigerant compressor having variable restriction pressure pulsation attenuator.
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Kazahaya Yukio (Saitama JPX) Ishikawa Masakuni (Saitama JPX), Swash plate type axial piston pump.
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Fujii Toshiro (Kariya JPX) Iwama Kazuaki (Kariya JPX) Inukai Hitoshi (Kariya JPX), Swash plate type compressor.
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Pandzik Richard T. (Dayton OH), Variable capacity positive displacement type compressor.
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Black Dennis A. (Dayton OH), Variable capacity radial-4 compressor.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Gray, Jr.,Charles L.; Brusstar,Matthew J., Hydraulic machine having pressure equalization.
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Ishikawa, Ryunosuke; Oobayashi, Yoshihiro, Piston pump and valve plate of piston pump.
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Glezer, Ari; Mahalingam, Raghavendran; Heffington, Samuel, Synthetic jet heat pipe thermal management system.
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Mahalingam, Raghavendran; Glezer, Ari, Thermal management of batteries using synthetic jets.
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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] Axial piston pump 원문보기