Tire bead breaker

Details Tire bead breaker Tire bead breaker

1990-12-19

1992-04-21

Meislin, D. S.

Wheelwright machines

Rubber tire mounting and/or demounting apparatus

For collapsing or shifting tire axially

B60C 2507

Patent

active

RE0338923

ABSTRACT:
A tire bead breaker (10) for use in removing a tire bead (30) from engagement with a rim (22) of a wheel hub (24). The tire bead breaker (10) includes: a sleeve (12) having a tine (32) depending therefrom. The tine (32) tapers in a direction away from the sleeve (12) and is dimensioned to be forceable between a wall (26) of the tire (28) adjacent the tire (28) and the rim (22) of the wheel hub (24). The tine (32) is disposed substantially othogonal to an axis of the sleeve (12). A post (14) is dimensioned to fit in the sleeve (12) and is capable of longitudinal movement therein. Two or more tongues (18) depend from the post (14) in a spaced apart manner and the tongues (18) are disposed substantially orthogonal to an axis of the post (14). The tongues (18) define a recess into which the tine (22) is capable of fitting and the tongues (18) are disposable between the wall (26) of the tire (28) adjacent the tire bead (30) and the rim (22) of the wheel hub (24). A clamp (46) is attached to the sleeve (12) and has an over-center locking lever (68) to releasably lock the tine (32) onto the rim (22) of the wheel hub (24). A drive (74) is disposed between the sleeve (12) and the post (14) to urge the two tongues (18) away from the tine (32) so as to force the tire bead (30) off the rim (22).

REFERENCES:
patent: 3693692 (1972-09-01), Branick
patent: 3847197 (1974-11-01), Konen
patent: 3880220 (1975-02-01), Bunts
patent: 4256161 (1981-03-01), Chisum
patent: 4415014 (1983-11-01), Durpin
patent: 4589462 (1986-05-01), Giles
patent: 4785865 (1988-11-01), Folstad
patent: 4787433 (1988-11-01), Thomas

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