Infinitely variable hydrostatic transmission drive

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5159992
SERIAL NO

07759112

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An infinitely variable hydrostatic transmission drive for self-propelled machines having a plurality of transmission motors which are fed from a common displaceable transmission-drive pump, at least one variable displacement motor having a swashplate which can be swung back into a zero position and at least one fixed displacement motor are provided in hydraulic parallel circuit. The motors operate in at least one case via a common back gearing on a common output, a shift coupling being provided between the variable displacement motor and an output.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
O&K Orenstein und Koppel AGBERLIN, DE9

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Leidinger, Gustav Friedberg, DE 9 83
Reinecke, Udo Dortmund, DE 2 18

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
8001668 Connector installation tool 4 2008
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
CNH BAUMASCHINEN GMBH (2)
* 7356992 Hydrostatic multi-motor drive 4 2003
* 2006/0162,329 Hydrostatic multi-motor drive 0 2003
 
Other [Check patent profile for assignment information] (1)
* 2009/0288,901 Hydrostatic Transaxle and Hydraulically Driven Vehicle 0 2009
 
HITACHI CONSTRUCTION MACHINERY CO., LTD. (2)
7637101 Hydraulic power transmission device and work vehicle 6 2006
* 2008/0271,564 Hydraulic Power Transmission Device and Work Vehicle 1 2006
 
SAUER-DANFOSS INC. (1)
* 5207060 Tandem hydraulic motor 55 1991
 
BROOKSTONE PURCHASING, INC. (3)
D438308 Hand held massager with rotatable head 7 1999
D435913 Hand held percussive massager 10 1999
6432072 Hand held percussive massager with adjustable nodes 26 2000
 
KOMATSU LTD. (3)
6336518 Travel assisting hydraulic circuit for hydraulic drive type working vehicle 18 1999
* 7971434 Device and method for continuously variable transmission of traveling vehicle 3 2006
* 2009/0139,224 Device and method of continuously variable transmission of traveling vehicle 1 2006
 
KUBOTA CORPORATION (1)
* 6874319 Hydrostatic transmission apparatus 3 2003
 
Tigercat Industries Inc. (1)
* 9005079 Drive transmission system and method 0 2012
 
BRIGGS & STRATTON CORPORATION (2)
7739870 Hydrostatic transmission 6 2007
7614227 Rotary control valve for a hydrostatic transmission 2 2007
 
KANZAKI KOKYUKOKI MFG. CO., LTD. (3)
* 7588103 Hydrostatic transaxle and hydraulically driven vehicle 6 2005
* 2006/0042,839 Hydrostatic transaxle and hydraulically driven vehicle 7 2005
8109355 Hydrostatic transaxle and hydraulically driven vehicle 0 2009
 
ZF FRIEDRICHSHAFEN AG (5)
* 7243755 Drive mechanism for a mobile vehicle 3 2004
7299891 Hydraulic drive mechanism for mobile vehicles 10 2004
7201702 Drive mechanism for a mobile vehicle 2 2004
* 2006/0021,464 Drive mechanism for a mobile vehicle 0 2004
7614226 Hydraulic transmission 4 2005
* Cited By Examiner