[특허]Combination valve including improved neutral valve for use in hydrostatic transmission

Combination valve including improved neutral valve for use in hydrostatic transmission 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16D-031/02 F15B-011/08 G05D-011/00
출원번호	US-0392484 (1995-02-23)
발명자 / 주소	Horton Todd (Bethany IL) Bennett Michael (Bethany IL)
출원인 / 주소	Hydro-Gear Ltd. Partnership (Sullivan IL 02)
인용정보	피인용 횟수 : 75 인용 특허 : 0

초록 ▼

A valve mechanism for use in a hydrostatic transmission including a closed porting system for hydraulic fluid and a sump is provided. The valve mechanism includes a valve body mounted to the hydrostatic transmission whereby the valve body is open to the closed porting system at one end thereof and open to the sump at the other end thereof. The valve body has a first open position whereby hydraulic fluid is pulled into the closed system from the sump when the pressure of the fluid in the closed system is below a first pressure, a second open position whereby hydraulic fluid exists the closed system to the sump when the pressure of the fluid is at a second pressure higher than the first pressure, and a closed position when the pressure of the hydraulic fluid in the closed system is at a third pressure higher than the second pressure.

대표청구항 ▼

A valve mechanism for use in a hydrostatic transmission including a porting system for hydraulic fluid and a sump, comprising a valve body, hydraulically linked to said hydrostatic transmission, whereby said valve body has a first opening to said porting system formed at a first end thereof and a second opening to said sump formed at the second end thereof; a first spool slidably mounted in said valve body and having a passage for hydraulic fluid, said passage having a first end in communication with the first opening of said valve body and a second end in communication with the second opening of said valve body; a second spool slidably mounted in said first spool and having an internal passage for hydraulic fluid; and said first spool having an internal projection formed at said second end thereof and communicating with the internal passage of said second spool.

이 특허를 인용한 특허 (75)

Windhorst,Scott E.; Reid,Bruce E., Assembly for use with a return to neutral mechanism.
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Windhorst,Scott E.; Reid,Bruce E., Assembly for use with a return to neutral mechanism.
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Takada, Kenichi; Ohashi, Ryota; Sumomozawa, Hironori; Shimizu, Hiroaki, Axle driving apparatus.
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Takada, Kenichi; Ohashi, Ryota; Sumomozawa, Hironori; Shimizu, Hiroaki, Axle driving apparatus.
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Takada,Kenichi; Ohashi,Ryota; Sumomozawa,Hironori; Shimizu,Hiroaki, Axle driving apparatus.
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Takada,Kenichi; Ohashi,Ryota; Sumomozawa,Hironori; Shimizu,Hiroaki, Axle driving apparatus.
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Raymond Hauser ; John Schreier, Axle driving device having lobed bearings.
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Hauser Raymond ; Schreler John ; Houser Michael ; Oolnk Juan Pedro Roberto A., Bypass for a hydrostatic transmission.
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Yu, Gang; Ye, Zhongming; Li, Fugang, Bypass/flushing valve for closed hydraulic circuit.
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Phanco, Eric S.; Rawski, Kenneth J., Center section for a hydrostatic transaxle.
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Rawski, Kenneth J., Center section for hydraulic drive apparatus.
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Takada Kenichi,JPX ; Ohashi Ryota,JPX, Charge pump for a hydrostatic transmission.
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Phanco,Eric S., Combination check valve and neutral valve assembly for use in a hydraulic component.
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Langenfeld,Thomas J.; Roney,Matthew C., Combination check valve and pressure rise rate valve.
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Horton Todd ; Bennett Michael, Combination valve including improved neutral valve for use in a hydrostatic transmission.
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Horton Todd ; Bennett Michael, Combination valve including improved neutral valve for use in hydrostatic transmission.
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Langenfeld, Thomas J.; Roney, Matthew C.; Trimble, Robert E., Combined check valve and pressure relief valve.
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Langenfeld,Thomas J.; Roney,Matthew C.; Trimble,Robert E., Combined check valve and pressure relief valve.
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Langenfeld,Thomas J.; Roney,Matthew C.; Trimble,Robert E., Combined check valve and pressure relief valve.
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Trimble, Robert, Control device for hydraulic pump.
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Hauser Raymond M. ; Langenfeld Thomas J. ; Ward William H., Control device for hydrostatic apparatus.
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Wiley, Thomas D.; Poplawski, Herb, Control mechanism for hydraulic devices.
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Bonny, Nathan W., Drive system having a variable output gerotor pump.
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Bonny, Nathan W., Drive system having a variable output gerotor pump.
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Bonny, Nathan W., Drive system having a variable output pump.
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Hauser, Raymond; Holder, Lonnie E., Dual pump.
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Hauser, Raymond; Holder, Lonnie E., Dual pump.
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Bennett,Michael L., Dual pump apparatus.
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Hauser, Raymond; Bennett, Michael L., Dual pump apparatus with power take off.
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Hauser,Raymond; Holder,Lonnie E., Dual pump transmission.
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Holder, Lonnie E.; Trimble, Robert E.; Todd, Michael, Dual pump transmission.
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Holder,Lonnie E.; Todd,Michael; Trimble,Robert E., Dual pump transmission.
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Phanco, Eric S.; Given, Patricia J.; Wahner, Adam W., Filter assembly for a hydrostatic transaxle.
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Hauser, Raymond; Schreier, John, Filter for hydrostatic device.
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Hauser Raymond M. ; Holder Lonnie E. ; Schreier John D. ; Sporrer Ronald J. ; Bennett Michael Lee, Housing and center section for hydrostatic transmission.
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Brandenburg, Neil; Wilson, Jeffrey A.; Poplawski, Herb, Hydraulic apparatus with return to neutral mechanism.
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Poplawski, Herb; Taylor, Michael W.; Buescher, Ryan S., Hydraulic apparatus with return to neutral mechanism.
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Poplawski,Herb; Taylor,Michael; Buescher,Ryan S.; Wilson,Jeffrey A.; Brandenburg,Neil, Hydraulic apparatus with return to neutral mechanism.
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Hauser, Raymond; Schreier, John, Hydrostatic Transmission.
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Okada,Hideaki, Hydrostatic stepless transmission.
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Phanco, Eric S.; Rawski, Kenneth J., Hydrostatic transaxle.
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Phanco, Eric S.; Rawski, Kenneth J., Hydrostatic transaxle.
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Phanco, Eric S.; Rawski, Kenneth J.; Ward, William H., Hydrostatic transaxle.
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Hauser Raymond ; Wigness Craig ; Langenfeld Thomas ; Ward William Herbert, Hydrostatic transmission.
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Hauser,Raymond; Schreier,John, Hydrostatic transmission.
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Hauser,Raymond; Schreier,John D., Hydrostatic transmission.
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Kawakami, Manabu; Ohashi, Ryota, Hydrostatic transmission.
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Raymond Hauser ; John Schreier, Hydrostatic transmission.
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Raymond M. Hauser ; Lonnie E. Holder ; John D. Schreier ; Ronald J. Sporrer ; Michael Lee Bennett, Hydrostatic transmission.
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Sakikawa,Shigenori; Ohashi,Ryota, Hydrostatic transmission.
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Schreier, John, Hydrostatic transmission.
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Takada,Kenichi; Ohashi,Ryota, Hydrostatic transmission.
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Sumomozawa, Hironori; Sakikawa, Shigenori; Ohashi, Ryota, Hyrdaulic transmission.
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Horton Todd ; Bennett Michael, Method of making a hydrostatic transmission having controlled fluid pressure.
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Trimble,Robert E., Multifunction valve for use in a hydraulic component.
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Trimble Robert, Pump.
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Trimble, Robert, Pump.
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Trimble, Robert, Pump.
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Trimble, Robert, Pump.
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Trimble, Robert E., Pump.
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Trimble,Robert, Pump.
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Trimble,Robert E., Pump.
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Ward, William H., Tandem pump and interface for same.
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Ward, William H., Tandem pump and interface for same.
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William H. Ward, Tandem pump and interface for same.
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Trimble,Robert E.; Christiansen,Tage; Kryhlmand,Anders; Kopel,Thomas, Valve Assembly.
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Trimble,Robert E.; Christiansen,Tage; Kryhlmand,Anders; Kopel,Thomas, Valve assembly.
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Hauser, Raymond; Ward, William H., Valve for a hydraulic drive apparatus.
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Hauser, Raymond; Ward, William H., Valve for a hydraulic drive apparatus.
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Hauser,Raymond; Ward,William H., Valve for a hydraulic drive apparatus.
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Hauser,Raymond; Ward,William H., Valve for a hydraulic drive apparatus.
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Phanco, Eric S.; Rawski, Kenneth J.; Given, Patricia J.; Ward, William H.; Holder, Lonnie E., Zero-turn hydrostatic transaxle.
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Rawski,Kenneth J., Zero-turn hydrostatic transaxle.
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Herb Poplawski ; Michael W. Taylor ; Ryan S. Buescher, Zero-turn transaxle with mounted return to neutral mechanism.
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Poplawski, Herb; Taylor, Michael W.; Buescher, Ryan S., Zero-turn transaxle with mounted return to neutral mechanism.
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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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연합인증

Combination valve including improved neutral valve for use in hydrostatic transmission 원문보기

초록 ▼

대표청구항 ▼

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이 특허를 인용한 특허 (75)

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Combination valve including improved neutral valve for use in hydrostatic transmission 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (75)

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