Railways: surface track – Portable track – Simulated roadbeds
Patent
1975-03-27
1976-06-08
Pinkham, Richard C.
Railways: surface track
Portable track
Simulated roadbeds
272 565SS, E01B 2300
Patent
active
039617513
ABSTRACT:
A cross-country skiing path has a pair of side-by-side elongated tracks each formed as an upwardly open and longitudinally extending channel in turn each formed of a longitudinal succession of separate track elements that each have a separate web and inside and outside flanges flanking this web. Each inside flange of each element of each row is turned toward an inside flange of a corresponding element of the other row and is provided with an ear extending toward the other row and having a longitudinal length equal to approximately half the overall longitudinal length of the element. Each ear is longitudinally offset from the corresponding ear of the corresponding element of the other row and extends transversely beyond the longitudinal midline of the path. An elongated longitudinally extending connector member, such as a cable, passes through the ears at the midline and interconnects the elements into a chain. Similar connecting members extend through the outside flanges.
REFERENCES:
patent: 344704 (1886-06-01), Whiteley
patent: 488371 (1892-12-01), Smith
patent: 3233893 (1966-02-01), Meyer
patent: 3363583 (1968-01-01), Greenberg
patent: 3385229 (1968-05-01), Ahern
patent: 3406617 (1968-10-01), Randazzo
patent: 3443493 (1969-05-01), Del Piano et al.
patent: 3557668 (1971-01-01), See
patent: 3809391 (1974-05-01), See
Dubno Herbert
Kramer Arnold W.
Pinkham Richard C.
Ross Karl F.
Societe Kessler S.A.
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