Leesona Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4608009 Thermoforming equipment for differential pressure forming products in thermoplastic materialExpiredMay 23, 84Aug 26, 86[B29C]
4566646 Take-up machine motor controlExpiredMay 11, 84Jan 28, 86[B65H]
4555377 Thermoforming methods and apparatusExpiredAug 24, 83Nov 26, 85[B23B]
4529372 Hollow article forming apparatusExpiredSep 16, 82Jul 16, 85[B29C]
4528556 Defective motor brush detectorExpiredFeb 14, 83Jul 09, 85[G08B]
4518126 Take-up mechanismExpiredJul 06, 83May 21, 85[B65H]
4509909 Clamp mechanism for differential pressure thermoformerExpiredApr 14, 83Apr 09, 85[B29C]
4502588 Apparatus and methods for transferring nested stacks of plastic articles from an elevated chute to an underlying conveyor surfaceExpiredJun 13, 83Mar 05, 85[B65G]
4471817 Fluid weft insertion loom monitoring systemExpiredOct 25, 82Sep 18, 84[D03D]
4471818 Fluid weft insertion loom monitoring systemExpiredOct 25, 82Sep 18, 84[D03D]
4466469 Air weft insertion nozzle control systemExpiredJan 07, 81Aug 21, 84[B03B, B65H]
4464329 Differential pressure synthetic plastic forming machine and method with formed article carrier meansExpiredJul 01, 82Aug 07, 84[B29C]
4454997 Inlet guide means for strand user devicesExpiredMar 04, 82Jun 19, 84[B65H]
4454084 Extrusion die control systemExpiredJun 09, 82Jun 12, 84[B29F]
4450874 Yarn clampExpiredOct 25, 82May 29, 84[D03D]
4396040 Quality monitoring system for loomsExpiredJan 07, 81Aug 02, 83[D03D]
4391768 Methods and apparatus for curling lips about the open mouths of stacked thermoplastic containersExpiredMar 23, 81Jul 05, 83[B29C]
4384596 Means and method for sensing loom conditions indicative of potential fabric defectsExpiredJan 07, 81May 24, 83[D03D, G01N]
4380183 Plastics trim press sheet feeding mechanismsExpiredMay 20, 81Apr 19, 83[B65H, B26F]
4380254 Weft guidance tube for loomsExpiredSep 08, 81Apr 19, 83[D03D]

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