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:
Feb. 02, 1993
Filed:
Apr. 22, 1991
Alberto Ruffini, Chieti, IT;
Nicolino Mammarella, Chieti, IT;
Pirelli Trasmissioni Industriali S.p.A., Chieti, IT;
Abstract
A method and apparatus for producing splined driving belts from a flexible annular element of vulcanized rubber, having a flattened rectangular section and mounted around two support rollers operated in rotation so as to move the annular element according to the direction of its longitudinal extension. A first set of knives transversely penetrates into the annular element for producing one series of longitudinal cuts parallel to the annular element according to a predetermined depth and in an inclined direction relative to the perpendicular line of an operating surface of the annular element itself and a second set of knives produces a second series of longitudinal mutually-parallel cuts inclined with respect to the cuts of the first series so as to form a series of longitudinal grooves in the annular element.