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:
Sep. 24, 1991
Filed:
May. 24, 1990
Ryutaro Ishii, Higashimurayama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A tire building apparatus includes a forming drum rotatably supported with its one end and having an outer circumference around which a tire constituting member is wound, and bead setters for setting beads in position on the tire constituting member. The apparatus further includes bead supply device having a holder fixed to a forward end of a main shaft of the forming drum and a plurality of grasping pawls supported by the holder and radially movable toward and away from an axis of the main shaft in synchronism with each other to be able to grasp the beads on inside thereof. With this arrangement, beads are brought into exact alignment with the forming drum to eliminate contact of the beads with the tire constituting member in setting the beads. As a result, damaging of the tire constituting member can be prevented to improve yield rate of tire building.