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:
Nov. 24, 1992
Filed:
Jan. 14, 1991
Yves Lecorre, St. Nazaire, FR;
Polytec, Saint-Nazaire, FR;
Abstract
An apparatus for displacing an article or a person in parallel with the curvature of and in proximity to a surface of variable profile possessing convex and/or concave parts, as the case may be, comprising a support for the article to be displaced in the vicinity of the surface, having at least two guide rollers, engaged respectively in each of two separate rail-forming grooves made in a structure for bearing on the ground which is moveable and which is located as near as possible to the surface, this structure having a profile corresponding substantially to that of this surface, the two rollers being arranged in their respective grooves in such a way that they are always separated by an invariable distance, a motor being provided for displacing the rollers in their grooves, wherein the grooves receiving the rollers are open outwards and provided on either side of a upright belonging to the bearing structure, these grooves having different profiles which are a function of the curvature of the surface and which are arranged in such a way that the line connecting the rollers always remains parallel to itself when these rollers follow the grooves under the effect of the a motor, at the same time forming a constant angle with a given reference line of the support of the article.