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:
Aug. 10, 1982
Filed:
Jul. 18, 1980
George E Enders, Salem, OH (US);
NRM Corporation, Akron, OH (US);
Abstract
The tire building machine comprises a tire building drum or shaper, annular bladders adjacent each end and a bead setter and bladder pusher mechanism movable axially of the drum selectively to set a tire bead in proper position and to push and effectively roll the bladder when inflated to cause the ply edges of the tire to be wrapped about the bead without air entrapment and stitched securely. Such mechanism includes a bead setting and pushing ring mounted for axial movement and hydraulic actuators are provided for effecting such movement. The ring has a flat face, a short axially extending radially inner annular surface or shelf for restricting expansion of a portion of the bladder rearwardly of the face when inflated thereunder, and a rounded inner peripheral edge or bead projecting beyond the shelf which grips the bladder when inflated to prevent relative sliding movement of the bladder and ring during bladder push. There is further provided a movable stop for precisely locating bead set and bladder pick-up positions of the ring and bead clamps for holding the tire bead to the ring during the bead set operation.