US 7,513,763 B1
	Tire press center mechanism
Anand Pal Singh, Akron, Ohio (US); Deane Robert Hamilton, Louisville, Ohio (US); Thomas Anthony Wasik, Akron, Ohio (US); Sivaram Addanki Krishnayya, Hudson, Ohio (US); and William Forte Franchim, Youngstown, Ohio (US)
Assigned to McNeil & NRM, Inc., Akron, Ohio (US)
Filed on Jun. 04, 2007, as Appl. No. 11/809,648.
Int. Cl. B29C 35/02 (2006.01)

U.S. Cl. 425—48  [425/29; 425/171]

17 Claims

8. A center mechanism for manipulating a bladder in a tire curing press comprising a lower plate ring for carrying a lower bead of the bladder, an upper plate ring for carrying an upper bead of the bladder, an outer piston assembly operative to selectively raise said lower plate ring, an inner piston assembly, positioned inside said outer piston assembly and operative to selectively raise said upper plate ring relative to said lower plate ring, and a guide coupled to said outer piston assembly and adapted to slidingly contact said inner piston assembly to prevent relative rotation therebetween.