SULLAIR CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161
 
  
 
F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED 113

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5388967 Compressor start control and air inlet valve thereforMar 10, 93Feb 14, 95[F04B]
5246349 Variable reluctance electric motor driven vacuum pumpDec 18, 92Sep 21, 93[F04F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0284,850 Cantilevered wagon running gearAbandonedJun 08, 06Dec 13, 07[B62D]
2007/0241,627 Lubricant cooled integrated motor/compressor designAbandonedApr 12, 06Oct 18, 07[H02K]
2006/0127,252 Reciprocating pump systemAbandonedDec 13, 04Jun 15, 06[F04B]
5222874 Lubricant cooled electric drive motor for a compressorExpiredJan 09, 91Jun 29, 93[F04B]
5223779 High efficiency switching circuit for transferring energy stored within a snubbing circuit to an electrical loadExpiredOct 31, 90Jun 29, 93[H02P]
5170059 Optically coupled fast turn off load switch driveExpiredOct 31, 90Dec 08, 92[G02B]
5150028 Two Zener diode one power supply fast turn offExpiredOct 31, 90Sep 22, 92[H02P]
5096598 Pressurized purging of a liquid drain for a vacuum systemExpiredFeb 26, 90Mar 17, 92[B01D]
5028220 Cooling and lubrication system for a vacuum pumpExpiredAug 13, 90Jul 02, 91[F04C]
4964790 Automatic regulation of balancing pressure in a screw compressorExpiredOct 10, 89Oct 23, 90[F01C]
4842501 Device for controlling the internal compression in a screw compressorExpiredMar 04, 85Jun 27, 89[F04C]
4611976 Capacity and internal compression control device in a screw compressorExpiredApr 29, 83Sep 16, 86[F01C]
RE32055 Method of operation for an oil-injected screw-compressorExpiredJan 22, 85Dec 24, 85[F04C]
4498849 Valve arrangement for capacity control of screw compressorsExpiredSep 14, 83Feb 12, 85[F04C]
4462769 Method at an oil-injected screw-compressorExpiredDec 02, 81Jul 31, 84[F04C]
4460322 Rotors for a rotary screw machineExpiredDec 22, 82Jul 17, 84[F04C, F01C]
4453900 Valve system for capacity control of screw compressorsExpiredMay 06, 82Jun 12, 84[F01C]
4443170 Arrangement at oil-injected high-pressure screw compressorExpiredNov 24, 82Apr 17, 84[F04C, F03C, F01C]

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