Inventor
JOHNSON ALAN W
US43 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON ALAN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SAUER INC
12 patentsUS5156576AOct 20, 1992
Compact integrated transaxle
SAUER INC138 citations98
US5505279AApr 9, 1996
Hydrostatic transmission and axle assembly
SAUER INC71 citations97
US5626204AMay 6, 1997
Hydrostatic transaxle
SAUER INC54 citations96
US5542494AAug 6, 1996
Hydrostatic transmission and axle assembly
SAUER INC24 citations96
US5513717AMay 7, 1996
Hydrostatic transmission and axle assembly
SAUER INC21 citations96
US5634526AJun 3, 1997
Hydrostatic transmission center section
SAUER INC20 citations93
US5921151AJul 13, 1999
Axle driving apparatus
SAUER INC20 citations92
US5218886AJun 15, 1993
Hydrostatic transmission center section
SAUER INC36 citations92
US5211077AMay 18, 1993
Hydrostatic transmission center section
SAUER INC26 citations92
US5979271ANov 9, 1999
Axle driving apparatus
SAUER INC10 citations82
US5593000AJan 14, 1997
Hydrostatic transaxle
SAUER INC12 citations82
US5577572ANov 26, 1996
Hydrostatic transmission center section
SAUER INC3 citations74
HYDRO GEAR LP
10 patentsUS5314387AMay 24, 1994
Hydrostatic transmission
HYDRO GEAR LP231 citations99
US5201692AApr 13, 1993
Rider transaxle having hydrostatic transmission
HYDRO GEAR LP190 citations99
US5616092AApr 1, 1997
Transaxle having hydrostatic transmission with expansion chamber
HYDRO GEAR LP29 citations96
US5501640AMar 26, 1996
Transaxle having hydrostatic transmission with hydraulic reduction
HYDRO GEAR LP48 citations96
US5330394AJul 19, 1994
Rider transaxle having improved hydrostatic transmission
HYDRO GEAR LP44 citations96
US6014861AJan 18, 2000
Hydrostatic transmission
HYDRO GEAR LP14 citations82
US5768892AJun 23, 1998
Rider transaxle having improved hydrostatic transmission
HYDRO GEAR LP15 citations82
US5497623AMar 12, 1996
Hydrostatic pump and motor unit
HYDRO GEAR LP18 citations82
US5689955ANov 25, 1997
Hydrostatic transaxle having improved brake design
HYDRO GEAR LP6 citations74
US5423182AJun 13, 1995
Improved hydrostatic transmission
HYDRO GEAR LP12 citations74
HYDRO GEAR LTD PARTNERSHIP
10 patentsUS6550243B2Apr 22, 2003
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP21 citations96
US6256989B1Jul 10, 2001
Method and apparatus for improved hydrostatic transmission having bypass
HYDRO GEAR LTD PARTNERSHIP17 citations92
US7036311B2May 2, 2006
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP11 citations84
US6526749B1Mar 4, 2003
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP7 citations82
US6301884B1Oct 16, 2001
Brake design for a hydrostatic transaxle
HYDRO GEAR LTD PARTNERSHIP9 citations82
US6261201B1Jul 17, 2001
Differential gear mechanism
HYDRO GEAR LTD PARTNERSHIP12 citations82
US6941753B1Sep 13, 2005
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP5 citations74
US6672057B1Jan 6, 2004
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP2 citations74
US6256988B1Jul 10, 2001
Rider transaxle having improved hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP4 citations74
US7065964B2Jun 27, 2006
Hydrostatic transmission
HYDRO GEAR LTD PARTNERSHIP0 citations52
SAUER DANFOSS INC
5 patentsUS6250206B1Jun 26, 2001
Hydraulic piston filling
SAUER DANFOSS INC18 citations84
US6338293B1Jan 15, 2002
Reduced oil volume piston assembly for a hydrostatic unit
SAUER DANFOSS INC10 citations68
US7299629B2Nov 27, 2007
Charge/auxiliary circuit for reducing power losses in hydrostatic systems
SAUER DANFOSS INC6 citations61
US6857862B2Feb 22, 2005
Roller vane pump
SAUER DANFOSS INC3 citations55
US7537078B1May 26, 2009
Axle driving apparatus
SAUER DANFOSS INC1 citations52