Bead breaker

Details Bead breaker Bead breaker

2005-10-18

2005-10-18

Thomas, David B. (Department: 3723)

Wheelwright machines

Rubber tire mounting and/or demounting apparatus

For collapsing or shifting tire axially

C157S001170

Reexamination Certificate

active

06955203

ABSTRACT:
A hand held tool for loosening or breaking the beads of tubeless pneumatic tires from wheel rims. When removing a tire from a wheel rim, lateral displacement of the tire bead from the indented rim is required. This lateral displacement of the bead of the tire is known as “breaking the bead”. The present device is a wedge-shaped bead breaking device to be inserted between a tire and wheel rim to break the bead of the tire. The device is molded plastic with a rugged handle joined to a broad wedge-shaped member. The wedge is molded with three or more parallel reinforcing runners with interspacing grooves between. The runners increase the strength of the wedge and reduce friction upon insertion of wedge between wheel rim and tire. The grooves provide an outlet channel for air escaping the tire and reduce the amount of plastic needed for molding the device.

REFERENCES:
patent: 1689585 (1928-10-01), Haschart
patent: 1969807 (1934-08-01), Leonard
patent: 3861525 (1975-01-01), Collin
patent: 3897812 (1975-08-01), Arnn
patent: 5875515 (1999-03-01), Dallas
patent: 6527033 (2003-03-01), Kliskey
patent: 6564849 (2003-05-01), Kusner
patent: 6769182 (2004-08-01), Mc Cabe
patent: 2003/0136567 (2003-07-01), Wherry
patent: 677485 (1991-05-01), None

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