TL

Thomas J. Langenfeld

HP Hydro-Gear Limited Partnership: 94 patents #2 of 96Top 3%
📍 Sullivan, IL: #2 of 51 inventorsTop 4%
🗺 Illinois: #194 of 84,256 inventorsTop 1%
Overall (All Time): #16,128 of 4,157,543Top 1%
95
Patents All Time

Issued Patents All Time

Showing 51–75 of 95 patents

Patent #TitleCo-InventorsDate
8132588 Valve Scott E. Windhorst 2012-03-13
8057335 Brake actuation assembly 2011-11-15
8001883 Return to neutral device for a hydraulic apparatus 2011-08-23
7927245 Hydraulic motor apparatus Raymond Hauser 2011-04-19
7926266 Hydraulic drive apparatus Craig Wigness, Shane A. Deters 2011-04-19
7841176 Zero turn transaxle Matthew C. Roney, Shane A. Deters, Raymond Hauser 2010-11-30
7568497 Combined check valve and pressure relief valve Matthew C. Roney, Robert E. Trimble 2009-08-04
7487636 Hydraulic drive apparatus Craig Wigness, Shane A. Deters 2009-02-10
7476172 Motor apparatus including brake mechanism Shane A. Deters 2009-01-13
7476171 Hydraulic motor apparatus including brake mechanism Shane A. Deters 2009-01-13
7454908 Zero turn transaxle Matthew C. Roney, Shane A. Deters, Raymond Hauser 2008-11-25
7412828 Adjustable hydraulic motor apparatus Michael L. Bennett, Matthew C. Roney, Raymond Hauser 2008-08-19
7409890 Hydraulic motor apparatus Raymond Hauser 2008-08-12
7396310 Hydrostatic transaxle 2008-07-08
7367353 Combined check valve and pressure relief valve Matthew C. Roney, Robert E. Trimble 2008-05-06
7328576 Zero turn transaxle Shane A. Deters, Daryl Smothers, J. David Pratt 2008-02-12
7308790 Adjustable hydraulic motor apparatus Michael L. Bennett, Matthew C. Roney, Scott E. Windhorst, Raymond Hauser 2007-12-18
7258134 Combination check valve and pressure rise rate valve Matthew C. Roney 2007-08-21
7234300 Fastener and valve for a hydraulic apparatus Scott W. Keller 2007-06-26
7225617 Bypass mechanism for a hydraulic drive apparatus Matthew C. Roney, Shane A. Deters, Daryl Smothers, J. David Pratt, Raymond Hauser 2007-06-05
7210294 Hydrostatic transaxle Scott W. Keller, Shane A. Deters 2007-05-01
7134276 Cylinder block brake for a hydrostatic drive apparatus Shane A. Deters 2006-11-14
7127889 Zero turn transaxle Michael L. Bennett, Matthew C. Roney, Shane A. Deters 2006-10-31
7111457 Diagnostic system for a hydrostatic transmission or transaxle Scott W. Keller 2006-09-26
7111545 Return to neutral device for a hydraulic apparatus 2006-09-26