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. 19, 1991
Filed:
Oct. 03, 1990
Larry E Chlebina, Akron, OH (US);
Norbert Majerus, Akron, OH (US);
John S Rambacher, Akron, OH (US);
Stephen L Felder, Mesquite, TX (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A method and apparatus for automatically removing an annular grooved tread from an initially closed segmented mold is described. The segmented mold has an annular cavity and a central core, and has both an axial direction and a radial direction. The method includes the steps of withdrawing a first plurality of segments, restraining radial movement of the tread at a plurality of locations from which segments have been withdrawn, withdrawing a second plurality of segments, retracting the restraint, and then removing the tread from the core by using an axially movable annular ring located above the upper half of the mold. The annular ring includes a plurality of push off devices, each device having a spring loaded radially retractable tread pusher component.