P.L. PORTER CO.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2003/0182,043 Smart system seat controllerAbandonedMar 22, 02Sep 25, 03[G06F]
6557941 Memory system for seat back reclinerExpiredJan 07, 00May 06, 03[B60N]
2002/0101,106 No-back drive mechanism for use with aircraft seat actuatorsAbandonedFeb 01, 01Aug 01, 02[B60N]
5819881 Dual locking linear mechanical lock for high loadsExpiredJul 24, 95Oct 13, 98[B65H]
5217195 Seat position adjustment mechanismExpiredFeb 16, 89Jun 08, 93[B60N]
5150771 Coil spring or friction-lock mechanismsExpiredMay 11, 90Sep 29, 92[B65H]
4759587 Manual override for power recliner seat screw jackExpiredAug 27, 87Jul 26, 88[B60N]
4685736 Infinitely positionable lock for reclining seatExpiredApr 30, 86Aug 11, 87[A47C]
4634182 Seatback recliner mechanism and inertia operated lockExpiredAug 09, 85Jan 06, 87[B60N]
4577730 Mechanical lockExpiredAug 30, 83Mar 25, 86[B65H]
4515034 Control mechanism for hydraulic locking deviceExpiredAug 27, 82May 07, 85[F16C]
4480729 Anti-surge valve for hydraulic locking deviceExpiredOct 03, 79Nov 06, 84[F16F]
4457406 Improved friction lockExpiredMay 28, 81Jul 03, 84[B65H]
4425987 Dual rotating mechanical lockExpiredJun 16, 80Jan 17, 84[B65H]
4411339 Friction lock mechanismsExpiredSep 10, 82Oct 25, 83[B65H]
4354398 Control mechanism for hydraulic locking deviceExpiredJun 09, 80Oct 19, 82[F16C]

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