Railway Engineering Associates, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5174218 Self-steering trucks with side bearings supporting the entire weight of the vehicleExpiredMar 18, 91Dec 29, 92[B61F]
5000097 Self-steering railway truckExpiredDec 22, 89Mar 19, 91[B61F]
4938152 Flexible railway car truckExpiredDec 15, 88Jul 03, 90[B61F]
4889054 Steering arms for self-steering trucks and truck retrofitting methodExpiredDec 02, 87Dec 26, 89[B61D]
4781124 Articulated trucksExpiredAug 21, 86Nov 01, 88[B61F]
4706571 Self-steering trucksExpiredJan 27, 86Nov 17, 87[B61D]
4655143 Articulated trucksExpiredJun 21, 84Apr 07, 87[B61F]
4483253 Flexible railway car truckExpiredFeb 16, 82Nov 20, 84[B61F]
4455946 Articulated trucksExpiredOct 05, 78Jun 26, 84[B61F]

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