Title: Tire building apparatus for large tires

Abstract: A first stage radial ply carcass and an endless breaker belt are built conventionally about horizontal axes. Carcass and belt separately are upended, to axis-vertical positions. The respective mid-circumferential planes of the carcass and the belt are made coplanar and coincident about the vertical axis of a shaping and curing core, without fixed reference to the vertical axis. The core is raised, into and through the carcass and expanded, first to support the carcass without significant radial deformation due to gravity, and then to expand the carcass to adhere the belt therearound. The assembly of core and belted carcass is then returned to horizontal orientation to receive tread therearound. The tire is cured conventionally while the shaping core remains in the tire, still inflated, preferably with an inert gas.

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Inventors: Rudder, Walter H. (Gadsden, AL, US)
Braden, deceased, William D. (late of Stow, OH, US)
McEvoy, Charles J. (Topeka, KS, US)
Dodson, Jr., Stokes R. (Topeka, KS, US)
Thiele, John R. (Topeka, KS, US)
Livgren, Allen L. (Topeka, KS, US)

Application Number: 473119
Filing Date: 1974-05-24
Publication_date: 1976-03-23
Assignee: The Goodyear Tire & Rubber Company (Akron, OH)
Primary Class(es): 156/126 156/127, 156/133, 156/396, 156/406
Other Classes:
US Patent Ref:

2824336	Feb, 1958	Weigold et al.	425/31.
2974714	Mar, 1961	Kraft	156/127.
3244575	Apr, 1966	Sabo et al.	156/132.
3380115	Apr, 1968	Soderquist	425/38.
3396221	Aug, 1968	Balle et al.	264/315.
3550196	Dec, 1970	Gazuit	425/29.
3738893	Jun, 1973	Edler	156/394.
R19895	Mar, 1936	State	156/126.

Other Refs: 239,897

Jul, 1962	AU

Primary Examiner: Powell, William A.
Assistant Examiner: Kittle, John E.
Attorney: Brunner; F. W., Washburn; R. S.