Inventor
POLLMAN FREDERIC W
US38 patents
⚠️ This page may combine multiple inventors who share the name “POLLMAN FREDERIC W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUNDSTRAND CORP
15 patentsUS4399886AAug 23, 1983
Controls for variable displacement motor and motors
SUNDSTRAND CORP111 citations96
US4478041AOct 23, 1984
Hydraulic motor control
SUNDSTRAND CORP47 citations92
US4401182AAug 30, 1983
Variable displacement hydraulic drive with disconnect
SUNDSTRAND CORP44 citations92
US4341131AJul 27, 1982
Hydromechanical transmissions
SUNDSTRAND CORP34 citations92
US4306467ADec 22, 1981
Hydromechanical transmissions
SUNDSTRAND CORP34 citations92
US4476680AOct 16, 1984
Pressure override control
SUNDSTRAND CORP35 citations91
US4537364AAug 27, 1985
Constant tension cable reel drive
SUNDSTRAND CORP36 citations88
US4419610ADec 6, 1983
Reversible regenerating electric vehicle drive
SUNDSTRAND CORP21 citations82
US4232572ANov 11, 1980
Engine-transmission control system
SUNDSTRAND CORP22 citations82
US4102131AJul 25, 1978
Integrated transmission-engine control
SUNDSTRAND CORP20 citations81
US4426194AJan 17, 1984
Viscosity compensating circuits
SUNDSTRAND CORP17 citations74
US4352367AOct 5, 1982
Electro-hydraulic control structure
SUNDSTRAND CORP8 citations74
US4246806AJan 27, 1981
Multi-mode hydromechanical transmission shift system
SUNDSTRAND CORP18 citations73
US4462210AJul 31, 1984
Input torque control for a variable displacement hydraulic transmission
SUNDSTRAND CORP12 citations71
US4111003ASep 5, 1978
Hydraulic transmission drive assembly with noise attenuation means
SUNDSTRAND CORP17 citations67
SAUER DANFOSS INC
12 patentsUS7354368B2Apr 8, 2008
Method and means for shifting a hydromechanical transmission
SAUER DANFOSS INC38 citations92
US6932733B2Aug 23, 2005
Hydromechanical transmission with differential steer
SAUER DANFOSS INC19 citations92
US6626785B2Sep 30, 2003
Hydromechanical transmission
SAUER DANFOSS INC18 citations92
US6575872B2Jun 10, 2003
Method and apparatus for making smooth shifts during mode changes of an HMT when using mechanical clutches
SAUER DANFOSS INC22 citations91
US6533695B2Mar 18, 2003
Hydromechanical transmission
SAUER DANFOSS INC25 citations85
US6338689B1Jan 15, 2002
Hydromechanical transmission
SAUER DANFOSS INC16 citations84
US6904997B2Jun 14, 2005
Compact vehicle transmission
SAUER DANFOSS INC8 citations74
US7594868B1Sep 29, 2009
Split-power transmission with mode shift
SAUER DANFOSS INC2 citations63
US6966859B2Nov 22, 2005
Hydromechanical transmission with differential steer
SAUER DANFOSS INC4 citations63
US6939261B1Sep 6, 2005
Compact vehicle transmission
SAUER DANFOSS INC5 citations63
US7578362B1Aug 25, 2009
Vehicles with dual path hydromechanical transmissions
SAUER DANFOSS INC6 citations56
US7717245B2May 18, 2010
Self-actuating clutch
SAUER DANFOSS INC0 citations52
POLLMAN FREDERIC W
5 patentsUS6988959B2Jan 24, 2006
Golf putter
POLLMAN FREDERIC W45 citations95
US7175537B2Feb 13, 2007
Golf putter with lift angle
POLLMAN FREDERIC W18 citations92
US7399233B2Jul 15, 2008
Golf putter with aiming mark
POLLMAN FREDERIC W9 citations83
US7156759B2Jan 2, 2007
Method for selecting a golf putter
POLLMAN FREDERIC W8 citations73
US8387738B1Mar 5, 2013
Electro-mechanical transmission for compact vehicles
POLLMAN FREDERIC W0 citations45
HYDRO GEAR LTD PARTNERSHIP
5 patentsUS6860358B1Mar 1, 2005
Utility vehicle having hydrostatic drive
HYDRO GEAR LTD PARTNERSHIP15 citations92
US7201250B1Apr 10, 2007
Utility vehicle having hydrostatic drive
HYDRO GEAR LTD PARTNERSHIP4 citations73
US6994180B1Feb 7, 2006
Utility vehicle having hydrostatic drive
HYDRO GEAR LTD PARTNERSHIP4 citations73
US7093685B1Aug 22, 2006
Utility vehicle having hydrostatic drive
HYDRO GEAR LTD PARTNERSHIP1 citations62
US7080709B1Jul 25, 2006
Utility vehicle having hydrostatic drive
HYDRO GEAR LTD PARTNERSHIP0 citations52