Yale Materials Handling Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D346259 Fork lift truckExpiredSep 19, 90Apr 19, 94[]
5148107 Inductive proximity switch means and methodExpiredSep 20, 90Sep 15, 92[G01B]
5132598 High torque inhibitorExpiredJun 06, 90Jul 21, 92[H02P]
D327356 Fork lift truckExpiredApr 03, 90Jun 23, 92[]
5032999 Motion sensor useful for power assisted steering systemsExpiredNov 01, 89Jul 16, 91[G01B]
D309051 Industrial truck control handleExpiredOct 22, 87Jul 03, 90[]
4933611 High torque inhibitorExpiredApr 21, 88Jun 12, 90[H02P]
4513839 Disc brake arrangement for steering and traction unitExpiredMay 06, 83Apr 30, 85[B60K]
4446345 Seat switch assemblyExpiredMay 19, 82May 01, 84[H01H]
4411188 Device for speed control of cylinder piston, particularly useful for a firearmExpiredDec 18, 80Oct 25, 83[F41F]
4306180 Directional control systemExpiredFeb 29, 80Dec 15, 81[H02P]
4289221 Hydraulic control systemExpiredNov 17, 78Sep 15, 81[F16D]
4276961 Mast and carriage assemblyExpiredMar 12, 79Jul 07, 81[B66B]
4262958 Adjustable seat for an industrial vehicleExpiredSep 07, 79Apr 21, 81[B60N]
4241578 Fluid storage tank for an industrial vehicleExpiredJun 18, 79Dec 30, 80[F15B]
4222469 Inching control system for industrial lift trucksExpiredNov 22, 78Sep 16, 80[B60K, F16D]
4216847 Lift truck controlExpiredOct 11, 78Aug 12, 80[B66B]

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