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:
Jan. 13, 1987
Filed:
Feb. 05, 1985
Michael E Owen, Tettenhall, GB;
Mark S Byerley, Greenback, TN (US);
Wyko Equipment Limited, Dudley, GB;
Abstract
A radial collapse tire building drum having a hub, a plurality of axially extending cylindrical body segments disposed around the hub, a first radial support at one axial end of the hub and supporting one axial end of the segments, a second radial support at the other axial end of the hub and supporting the other axial ends of the segments, and a collapsing mechanism disposed within the drum between the first and second radial supports and operable to move the segments either radially outwardly with respect to the hub to form a cylindrical body concentric with the hub, or radially inwardly towards the hub to collapse the cylindrical body of the drum. A main drive shaft is secured to the hub with its axis co-extensive with the hub axis and there is a hollow shaft through which the main drive shaft extends. A drive transmission extends between the circumferentially adjacent, radially extending supports of the first radial support means to provide a drive connection between the hollow shaft and the collapsing mechanism for transmitting rotational movement of the hollow shaft relative to the main shaft to operate the collapsing mechanism.