Mid-West Conveyor Company, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5632206 Adjustable cushioned tow bar for power and free conveyorExpiredJul 14, 95May 27, 97[B61B]
5544590 Automatic seal crossover system for power and free conveyor on-floor carriagesExpiredSep 14, 95Aug 13, 96[B61B]
5517922 Power and free conveyor transfer systemExpiredFeb 17, 95May 21, 96[B61B]
5303655 Automatic stabilizer unit for free trolley having vertically movable wheels resonsive to trackside railsExpiredSep 28, 92Apr 19, 94[E01B]
5085150 Trolley body with embedded inserts for axles having a peripheral groove cast into bodyExpiredMar 20, 90Feb 04, 92[B61B]
5080220 Accumulating pallet conveyorExpiredOct 24, 90Jan 14, 92[B65G]
5067414 Self-adjusting shock absorbing carrierExpiredDec 13, 90Nov 26, 91[B61B]
5048426 Integrated conveyor system with transfer of trolliesExpiredMar 20, 90Sep 17, 91[B61K]
5033394 Floor conveyor junction seal gap closureExpiredOct 06, 89Jul 23, 91[B61B]
5027715 Shock absorbing carrierExpiredFeb 12, 90Jul 02, 91[B61B]
4981081 Center link pusher dog for power and free conveyorsExpiredMay 24, 89Jan 01, 91[B61B]
4964344 Side link pusher dog with lubrication passageExpiredApr 28, 89Oct 23, 90[B61B]
4939999 Integrated conveyor system with constant speed drive chainExpiredAug 30, 88Jul 10, 90[B61J, B65G, B61B]
4919053 Conveyor with twin bias accumulationExpiredAug 01, 89Apr 24, 90[B61B, E01B]
4901648 Trolley braking method and apparatus for use with conveyorsExpiredApr 15, 88Feb 20, 90[B61H]
4898099 Positive retraction trolley stop for power and free conveyorsExpiredDec 13, 88Feb 06, 90[B61K, B61B]
4790247 Trolley stop for power and free conveyorsExpiredNov 04, 86Dec 13, 88[B61K, B61B]
4729467 Transport assembly for use with storage conveyor, and combinationExpiredMay 20, 86Mar 08, 88[B65G]
4619575 Apparatus for storage and retrieval of thin trays and sheetsExpiredJan 28, 85Oct 28, 86[B65G]
4605120 Shaft driven accumulation conveyor arrangementExpiredNov 29, 83Aug 12, 86[B65G]

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