The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 1990
Filed:
Nov. 16, 1988
Francis Carmes, Voisins le Bretonneux, FR;
Societe Anonyme dite: ALSTHOM, Cedex, FR;
Abstract
The system includes a motor and stepdown gear unit (17) which drives a central body (22) of a moving equipment longitudinally by means of a ball screw (20) and a nut. The moving equipment includes two slides (24, 25) sandwiching the central body (22). The two slides mesh with a common gear wheel mounted to rotate freely in the central body (22). Each of the slides drives a corresponding control bar (9, 10) connected to an operating rod (7, 8) in turn connected to one of the blades of a railroad switch, with said drive taking place via a vertical cylindrical floating peg (34, 35, 38, 39). The control bars (9, 10) are locked at the ends of the stroke of the central body (22) by respective ones of the floating pegs being positioned in a corresponding locking groove (40 to 43) of a fixed locking plate (30, 31). Any mechanical fault in the transmission linkage gives rise to relative displacement between the slides (24, 25) about the central body (22) and this is detected by the common gear wheel rotating, said gear wheel being fixed to means (27) for actuating a contact (29) for indicating anomalous operation.