[특허]Rider transaxle having hydrostatic transmission

Rider transaxle having hydrostatic transmission 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16H-039/16
출원번호	US-0727463 (1991-07-09)
발명자 / 주소	Johnson Alan W. (Ames IA) Hauser Ray M. (Decatur IL)
출원인 / 주소	Hydro-Gear Limited Partnership (Sullivan IL 02)
인용정보	피인용 횟수 : 148 인용 특허 : 0

초록 ▼

A transaxle with a hydrostatic transmission which is compact, reliable and economical to manufacture, including a novel means for hydraulically reducing the speed of the input to the transaxle; an improved differential which is stronger and less complicated than prior art designs; a longer lasting, more effective means of preventing oil leakage from the axle shafts in the transaxle housing; a center section for the hydrostatic transmission supporting the output drive shaft, eliminating the need for additional bearing support; an improved means for hydraulically bypassing the hydrostatic transmission and a unique check valve arrangement for maintaining oil pressure within the hydrostatic transmission. The hydrostatic transmission also includes a pump and a motor whose orientation to one another may be varied according to the space requirements dictated by the size and configuration of the vehicle through the use of a helical gear.

대표청구항 ▼

A transaxle including a hydrostatic transmission for use in a vehicle to convert rotational power from the vehicle engine to output axle means, comprising (a) a housing for said transaxle providing a sump cavity and separate axle cavities; (b) a hydrostatic transmission including: (1) a first hydraulic displacement unit mounted in said sump cavity and having a rotatable cylinder block containing a plurality of chambers for holding reciprocal pistons and receiving a displacement unit mounted in said sump cavity and having a rotatable cylinder block containing a plurality of chambers for holding reciprocal pistons and engaging one end of a rotatable drive shaft to drive said rotatable drive shaft, said rotatable drive shaft supported and arranged within said housing so as not to extend through said thrust bearing; (2) a center section mounted in said sump cavity and having means for rotatably mounting said first hydraulic displacement unit and said second hydraulic displacement unit, said means including means for hydraulically connecting said first and second hydraulic displacement units, a first running surface positioned to rotatably mount said first hydraulic displacement unit, a second running surface positioned to rotatably mount said second hydraulic displacement unit and a bottom face, porting means for hydraulically connecting said first displacement unit to said second hydraulic displacement unit integrally formed therein, and bearing means integrally formed in said center section for receiving and fully supporting said rotatable drive shaft; (3) a thrust bearing mounted in and fully supported by said housing so as to engage said reciprocal pistons of said second hydraulic displacement unit; (4) means for reducing the speed of said rotatable input shaft, wherein at least a portion of said speed reduction is accomplished through said porting means and said piston chambers of said first and said second hydraulic displacement units; (5) a check valve mechanism comprising valve openings formed into the bottom face of said center section and extending to s id porting means, a plate mounted on said bottom face of said center section and plurality of plate openings formed therein and corresponding to said valve openings, a raised annular surface formed on the top surface of said plate around each said plate opening, said raised annular surface acting to form a seal between said plate and said bottom face of said center section, a plurality of balls, one of said balls being mounted in each of said valve openings and said plate openings, and means for releasably securing said balls against said plate openings; (c) a differential gear mechanism connected to said rotatable drive shift comprising a ring gear engaged to and driven by said input drive means, a plurality of planet gears securely connected to said ring gear in a manner to allow rotation of said planet gears around an axis perpendicular to the axis of rotation of said ring gear, a plurality of bevel gears engaged and driven by said planet gears, said bevel gears being mounted on and driving said output axle means; and clamping means for securing said bevel gears such that said bevel gears are solely supported by said planet gear unit and said clamping means, said output axle means being connected to and driven by said (d) means for diverting said hydraulic fluid out of said porting means and said first displacement means and said second displacement means to enable said vehicle to be moved with minimal resistance from said hydraulic fluid; and (e) said sump cavity containing said hydraulic fluid for said hydrostatic transmission and said output drive means, and said axle cavities formed within said housing separate from said sump cavity for enclosing said output axle means and a lubricating fluid for said drive axles.

이 특허를 인용한 특허 (148)

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Langenfeld, Thomas J., Differential lock mechanism.
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Hauser Raymond ; Wigness Craig ; Langenfeld Thomas ; Ward William Herbert, Hydrostatic transmission.
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Hauser, Ray M.; Johnson, Alan W., Hydrostatic transmission.
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Hauser, Ray M.; Johnson, Alan W., Hydrostatic transmission.
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Hauser, Ray M.; Johnson, Alan W., Hydrostatic transmission.
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Hauser, Ray M.; Johnson, Alan W., Hydrostatic transmission.
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Hauser,Ray M.; Johnson,Alan W., Hydrostatic transmission.
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Hauser,Raymond; Johnson,Alan W., Hydrostatic transmission.
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Schreier, John, Hydrostatic transmission.
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Schreier John ; Hansen Matthew ; Horton Todd ; Sporrer Ron, Integrated hydrostatic transaxle with controlled traction differential.
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Schreier John ; Hansen Matthew ; Horton Todd ; Sporrer Ron, Integrated hydrostatic transaxle with controlled traction differential.
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Phanco, Eric S.; Rawski, Kenneth J.; Ward, William H., Internal expansion tank for hydrostatic transaxle.
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Phanco,Eric S.; Rawski,Kenneth J.; Ward,William H., Internal expansion tank for hydrostatic transaxle.
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Czekansky Edward S. (North Canton OH) Otto Dennis L. (Malvern OH), Lip seal separating oil and grease.
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Hauser Ray M. ; Johnson Alan W., Method and apparatus for improved hydrostatic transmission having bypass.
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Jolliff,Norman E; Ruebusch,Richard T; Dowen,Gordon C; Twaddle,Gary G., Method for manufacturing transaxles.
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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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Langenfeld, Thomas J., Pump and center section for hydrostatic transmission.
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Hauser Ray M. ; Johnson Alan W., Rider transaxle having improved hydrostatic transmission.
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Hauser Ray M. ; Johnson Alan W., Rider transaxle having improved hydrostatic transmission.
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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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Keusch, Rene; Hauser, Raymond, Transaxle with differential lock mechanism.
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Sporrer Ronald, Transmission and transaxle casing.
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Sporrer, Ronald, Transmission and transaxle casing.
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Hauser, Raymond; Wyatt, Christopher K.; Holder, Lonnie E.; Keller, Scott W., Vehicle drive and control system.
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Hauser, Raymond; Wyatt, Christopher K.; Holder, Lonnie E.; Keller, Scott W., Vehicle drive and control system.
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Brookens,Joseph L.; Keller,Scott W., Zero turn hydrostatic transmission bypass linkage.
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Langenfeld, Thomas J.; Roney, Matthew C.; Deters, Shane A.; Hauser, Raymond, Zero turn transaxle.
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Sporrer Ronald ; Hauser Raymond, Zero turn transaxle.
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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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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

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Rider transaxle having hydrostatic transmission 원문보기

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Rider transaxle having hydrostatic transmission 원문보기

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