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US 4,728,031 AGranted
Apparatus for fastening rails to railroad ties
AssigneesSchwihag Gesellschaft fur Eisenbahnoberbau mbH, Firma Karl Richtberg KG
InventorsArmin Heim, Johannes Horn, Karl-H. Schwiede
Life of this patent
Estimating the term…
Abstract
Apparatus for fastening rails on ties of a railroad comprising four rail screws for flushly mounting an abutment face of a bedplate against the upper surface of the tie and a pre-stressed, elastically deformable bedplate having a convex curved abutment face for frictionally engaging the upper surface of the tie and for applying a spring force against the rail screws when the rail screws are used to brace the curved abutment face flush against the tie.
Claims13
Apparatus for fastening rails on ties in railroad permanent way, comprising:
- (a) at least two rail screws for flushly mounting an abutment face of a bedplate against the upper surface of a tie, and
- (b) a pre-stressed, elastically deformable bedplate having a convex curved abutment face for frictionally engaging said upper surface of a tie, for applying a spring force against said rail screws when said rail screws are used to brace said curved abutment face flush against said tie and for preventing relative movement between said bedplated and tie.
Dependencies are inferred from the claim text.