NATIONAL CASTINGS CORPORATION, A CORP. OF DE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4645085 Method of enhancing rigidity in a railway car coupler knuckleExpiredApr 08, 85Feb 24, 87[B61G]
4637518 Coupler for a railway car coupler assemblyExpiredApr 08, 85Jan 20, 87[B61G]
4635804 Yoke for railway car coupler assemblyExpiredApr 08, 85Jan 13, 87[B61G]
4597499 Biased pin retainer block for a rotary coupling systemExpiredJun 20, 84Jul 01, 86[B61G]
4593828 Rotary railroad car F couplerExpiredDec 27, 83Jun 10, 86[B61G]
4357880 Bolster for a railroad car truckExpiredAug 25, 80Nov 09, 82[B61F]
4350256 Rotary coupler with a specially configured pinholeExpiredSep 25, 80Sep 21, 82[B61G]
4328900 Rotary coupler with improved pin bearingExpiredSep 12, 80May 11, 82[B61G]
4310099 Rotary connectorExpiredApr 14, 80Jan 12, 82[B61G]
4305514 Plate-type friction draft gearExpiredNov 16, 79Dec 15, 81[B61G]
4304397 Two-shoe draft gearExpiredApr 21, 80Dec 08, 81[F16F]
4248354 Rotary locksetting mechanism for a rigid jaw couplerExpiredAug 03, 79Feb 03, 81[B61G]
4243149 Railroad car draft gear and coupler arrangementExpiredJun 19, 78Jan 06, 81[B61E]
4236644 Wearplate for the butt end of a coupler shankExpiredFeb 15, 80Dec 02, 80[B61G]
4236645 Wearplate for a coupler shank pinholeExpiredMar 30, 78Dec 02, 80[B61G]
4203523 Locksetting mechanism for a rigid jaw couplerExpiredJun 19, 78May 20, 80[B61G]

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