Grooved rail switch with a tongue rail device
Patent 4634087 Issued on January 6, 1987. Estimated Expiration Date: 
November 30, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 530201 705056 1049618 1301099 2231232 InventorAssigneeApplicationNo. 06/676544 filed on 11/30/1984US Classes:246/430, Sliding246/434, Flexible rail246/435R, Point246/453Chairs and platesExaminersPrimary: Reeves, Robert B.Assistant: Werny, Scott H. Attorney, Agent or FirmInternational ClassesE01B 7/00 (20060101)E01B 7/02 (20060101) Foreign Application Priority Data1983-11-30 DEAbstractA grooved rail switch with a tongue rail device includes a tongue rail displaceably supported on a torsion-stiff support box for movement between a stock rail and a switch rail. The support box is made up of an upper slide plate, a lower bottom plate and flat bars extending between and welded to the slide plate and bottom plate. High strength bolts secure the stock rail to one side of the support box and the switch rail to the other side. | |
