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:
Jan. 06, 1981
Filed:
Jul. 09, 1979
Applicant:
Inventor:
Michael J Kenney, Sutton Coldfield, GB;
Assignee:
Dunlop Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B60C / ; B60C / ;
U.S. Cl.
CPC ...
152370 ; 81 157 ; 156293 ; 1563031 ;
Abstract
A repair plug comprises an elongate body having a head and a tail made of rubber compositions having different moduli of extension. The head has a higher modulus of extension than the tail and is adapted for engagement by a repair tool. The head may have a hole adjacent the free end thereof in which a member of a repair tool is received to allow insertion of the plug in a puncture hole without folding back on itself. Preferably the head is tapered in the direction leading towards the free end thereof and is made of a rubber composition the hardness of which exceeds that of the tail thereby further facilitating insertion.