The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 1977
Filed:
May. 28, 1975
Applicant:
Inventor:
Anthony Gerald Goodfellow, Maghull, near Liverpool, EN;
Assignee:
Dunlop Limited, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B29H / ;
U.S. Cl.
CPC ...
264258 ; 264275 ; 264326 ; 264328 ;
Abstract
In moulding the tread portion of a pneumatic tire to have a breaker structure incorporated therein the breaker is built in an annular mould cavity to have a radially outermost 90.degree. ply consisting of parallel cords extending axially of the cavity, and uncured rubber is introduced into the cavity through an annular gate surrounding the cavity so as to spread axially of the cavity. As the introduced uncured rubber does not move circumferentially of the cavity it has no tendency to displace the breaker cords.