Ply folding bladder

Details Ply folding bladder Ply folding bladder

1979-05-07

1981-02-10

Kittle, John E.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156401, 156416, B29H 1700

Patent

active

042499798

ABSTRACT:
There is disclosed an inflatable bladder for axially folding a ply at the shoulder of a drum, the body of which bladder carries ply-lifting fingers, as well as a ply-folding wedge in its surface. Inflating means causes the fingers and wedge, after initial expansion of the bladder, to establish and maintain fixed positions against the ply, whereupon the wedge turns a corner carrying the fabric with it. The method of operation is similarly disclosed.

REFERENCES:
patent: 3111443 (1963-11-01), Vanzo et al.
patent: 3154455 (1964-10-01), Nebout
patent: 3560301 (1971-02-01), Cantarutti
patent: 3562062 (1971-02-01), Bryant
patent: 3831657 (1974-08-01), Dillenschneider
patent: 3966536 (1976-06-01), Schmitt
patent: 4063987 (1977-12-01), Irie et al.
patent: 4087306 (1978-05-01), Head et al.

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