WHITE HYDRAULICS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0173,515 DISK SPRING HYDRAULIC RELEASE BRAKEAbandonedJan 09, 08Jul 24, 08[F16D]
2007/0210,643 Hydraulic Motor and Brake Control System and Method of Controlling the SameAbandonedMar 30, 07Sep 13, 07[B60T]
2006/0081,423 Disk spring hydraulic clutch/brakeAbandonedNov 30, 05Apr 20, 06[F16D]
4940401 Lubrication fluid circulation using a piston valve pump with bi-directional flowExpiredFeb 14, 89Jul 10, 90[F04C, F03C]
4875841 Staggered rotor gerotor deviceExpiredFeb 01, 89Oct 24, 89[F03C]
4858714 Hydrostatic steering deviceExpiredMar 17, 88Aug 22, 89[F16K, B62D, F15B]
4717320 Gerotor motor balancing plateExpiredNov 15, 85Jan 05, 88[F01C]
4697997 Rotary gerotor hydraulic device with fluid control passageways through the rotorExpiredMar 14, 86Oct 06, 87[B23P, F03C]
4592173 Hone for gerotor stators, and honing methodExpiredJun 29, 84Jun 03, 86[B23F]
4552519 Hydrostatic steering unit with cylindrical slide member within cylindrical valve sleeveExpiredDec 30, 83Nov 12, 85[F15B, B62D, F04C]
4527054 Optical fiber sensing device for hydraulic motorsExpiredJun 10, 82Jul 02, 85[G02B]
4494915 Hydrostatic steering unit with cylindrical slide member within clindrical valve sleeveExpiredNov 02, 81Jan 22, 85[F15B, F04C]
4494916 Hydrostatic steering unit with cylindrical slide member within cylindrical valve sleeveExpiredNov 04, 82Jan 22, 85[F15B, F04C]
4474544 Rotary gerotor hydraulic device with fluid control passageways through the rotorExpiredMar 23, 82Oct 02, 84[F03C]
4451217 Rotary fluid pressure deviceExpiredJul 16, 81May 29, 84[F04C]
4357133 Rotary gerotor hydraulic device with fluid control passageways through the rotorExpiredJan 18, 80Nov 02, 82[F04C, F03C]
4285643 Rotary fluid pressure deviceExpiredApr 12, 79Aug 25, 81[F04C]

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