Plugs composed of two rubbers having different moduli of extensi

Details Plugs composed of two rubbers having different moduli of extensi Plugs composed of two rubbers having different moduli of extensi

1979-07-09

1981-01-06

Cannon, James C.

Resilient tires and wheels

Tires, resilient

Patches

81 157, 156293, 1563031, B32B 702, B32B 2504, B60C 2106, B60C 2516

Patent

active

042430895

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.

REFERENCES:
patent: 581641 (1897-04-01), Wolf
patent: 821041 (1906-05-01), Kinney
patent: 1653499 (1927-12-01), Fisher
patent: 2866494 (1958-12-01), Sanderson
patent: 3029671 (1962-04-01), Clifford
patent: 3542614 (1970-11-01), Hopkins
patent: 3648750 (1972-03-01), Felden
patent: 3773097 (1973-11-01), Mullins

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