Clinton Joseph Covey

US Patent:

D499066, Nov 30, 2004

Filed:

Apr 21, 2004

Appl. No.:

29/203917

Inventors:

Clinton Joseph Covey - Stow OH

Assignee:

The Goodyear Tire Rubber Company - Akron OH

International Classification:

1215

US Classification:

D12579, D12901

US Patent:

20190016075, Jan 17, 2019

Filed:

Jul 17, 2017

Appl. No.:

15/651675

Inventors:

- Reynoldsburg OH, US
Clinton Covey - Stow OH, US

International Classification:

B29D 30/02
B29C 43/02
B29C 43/12
B29C 43/36

Abstract:

A NPT tread layer mold and molding process. The mold may include an inner mold portion that supports a built-up green NPT tread layer, and an outer mold portion that cooperates with the inner mold portion to cure the tread layer and to form a tread pattern in an outer surface thereof. The inner mold portion may comprise two halves, each having a plurality of wall segments that collectively cooperate to form a tread layer inner surface molding wall when the inner mold is closed. Sidewall molding portions may also be provided to form limited sidewalls of the NPT tread layer—with or without a tread pattern. An inflatable bladder may be located within the inner mold portion to apply pressure to the tread layer inner surface molding wall and, resultantly, to the NPT tread layer, during molding.