HYDRAULIC POWER SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E02D FOUNDATIONS; EXCAVATIONS; EMBANKMENTS 221
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL268
 
  
 
B25D PERCUSSIVE TOOLS 119
 
  
 
B66D CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS 120

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0090,469 Vibratory Hammer with Passive Lubrication System for BearingsDec 09, 14Apr 02, 15[B25D, E02D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5988297 Variable eccentric vibratory hammerMar 24, 98Nov 23, 99[E02D]
5938183 Braking assembly for use on a hydraulic winchAug 04, 98Aug 17, 99[B66D]
5353840 Pressure response type pulsation damper noise attenuator and accumulatorAug 10, 93Oct 11, 94[F16L]
5205326 Pressure response type pulsation damper noise attenuator and accumulatorAug 23, 91Apr 27, 93[F16L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5662462 Sealing arrangement for a hydraulic motor and pumpExpiredJun 07, 95Sep 02, 97[F01C]
5210382 Belleville washer spring type pulsation damper, noise attenuator and accumulatorExpiredAug 23, 91May 11, 93[F16F]

Top Inventors for This Owner

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