Sealing device for facilitating pressuring of tubeless tires

Details Sealing device for facilitating pressuring of tubeless tires Sealing device for facilitating pressuring of tubeless tires

1985-03-20

1986-04-22

Smith, James G.

Wheelwright machines

Rubber tire mounting and/or demounting apparatus

With carrier

B60C 2500

Patent

active

045835780

ABSTRACT:
A sealing device for facilitating pressuring of tubeless tires and comprising an endless hollow ring member adapted to be positioned at the hiatus between a deflated tire and the associated wheel rim, an inner tube disposed within the interior of the hollow ring and extending through at least a portion of the circumference thereof, a cable extending through the inner tube and a helical spring extending around the remaining portion of the circumference of the hollow tube and having the opposite ends thereof secured to the ends of the cable for retaining the spring, cable and inner tube within the hollow ring. When air pressure is directed into the interior of the tire, the sealing device installed at the hiatus between the tire and the wheel substantially precludes the escape of the air at the hiatus, and when the internal pressure of the tire reaches a predetermined level, the ring member is automatically disengaged from the tire and wheel. The internally disposed structures of the ring member preclude the necessity of manual holding of the ring member in the position during the pressuring operation, and the adjustment of the spring tension within the ring determines the internal pressure of the tire required for the release of the device.

REFERENCES:
patent: 3552469 (1971-01-01), Corless
patent: 3596698 (1971-08-01), Jordan
patent: 3665995 (1972-05-01), Middleton, Jr.
patent: 3974005 (1976-08-01), Graml

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