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:
Dec. 02, 1986
Filed:
Sep. 24, 1984
William R Casey, Akron, OH (US);
Robert P Loser, Akron, OH (US);
Michael W Smith, Brimfield, OH (US);
Terry J Waibel, Seville, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A tire carcass (55) is built on a generally cylindrical drum (10) rotatable about an axis (12) by applying green tire components (50) to the cylindrical surface (14) and curved shoulder surfaces (32,34) of the drum (10). The radially inner surfaces (58) of the lower sidewalls (56) of the tire carcass (55) are formed on the surfaces (32,34) of the curved shoulders (28,30) which have a curvature which can be generated as a segment of a conic section which is at an angle other than a right angle to the axis of a cone. The curvature for each of the lower sidewall inner surfaces (58) as measured along a line of intersection (36) of a shoulder surface (32,34) of the drum (10) and a radial plane (A--A) containing the drum axis (12) is decreased from positions (38) adjacent the axially outer edges (40) of the drum (10) to positions (42) on the cylindrical surface (14 ) of the drum. As a result, there is minimum change in the shape of the lower sidewalls (56) during shaping of the tire carcass (55) to the cured shape of the tire.