Mcneil & Nrm, Inc.

Mcneil Akron Inc.

Deane Robert Hamilton

Anand Pal Singh

William Forte Franchim

Bernard F Lesneski

Sivaram Addanki Krishnayya

Thomas Anthony Wasik

A center mechanism () for manipulating a bladder () in a tire curing press () includes a lower plate ring () for carrying a lower bead () of the bladder (), and an upper plate ring () for carrying an upper bead () of the bladder (). The center mechanism () may also include a first piston chamber () and a second piston chamber () positioned radially interior from the first piston chamber (). An outer piston assembly () is operative to selectively raise the lower plate ring () and an inner piston assembly () is positioned inside the outer piston assembly () and is operative to selectively raise the upper plate ring () relative to the lower plate ring (). A guide () is coupled to the outer piston assembly () and is adapted to slidingly contact the inner piston assembly () to prevent relative rotation therebetween. Operating fluid is provided through a single port () to selectively raise the outer piston assembly () and the inner piston assembly (). The port () is fluidly connected to the first chamber () and the second chamber ().

Tire press center mechanism

A modification to a multiple cavity tire press places a plurality of hydraulic cylinders beneath the lower mold half and heat platen of each mold in the press. The size of the side links of the press is adjusted so that in normal operation, the side links only bring the upper and lower mold halves into close registration and hydraulic pressure applied to the lower mold halves through the plurality of hydraulic cylinders gives the squeeze to the press halves, as well as eliminating or minimizing the malocclusion of the mold halves known in the prior art due to deflection of the respected upper and lower portions of the mold by application of mechanical squeeze.

Hydraulic squeeze for tire curing press

Growing community of inventors

Louisville, OH, United States of America

Deane Robert Hamilton