Wheelwright machines – Rubber tire mounting and/or demounting apparatus – For collapsing or shifting tire axially
Patent
1986-10-31
1988-11-29
Meislin, Debra
Wheelwright machines
Rubber tire mounting and/or demounting apparatus
For collapsing or shifting tire axially
B60C 2506
Patent
active
047874333
ABSTRACT:
A manually operated hydraulic pump having been modified to break the circumferential bead of a pneumatic tire from a wheel rim, the hydraulic pump including a pump unit and a horizontally disposed cylinder having an internal piston rod, the pump unit being provided with a pivotal actuator wherein pivoting the actuator upwardly and downwardly urges the piston rod outwardly from the cylinder; the cylinder being provided with threads on its end being threadedly received in a barrel, the barrel including a wedge for inserting between the wheel rim and the sidewall of the tire, a locking member for securing the pump onto the wheel rim, the wedge comprising a stationary horseshoe-shaped plate surrounding a ram which is affixed to the end of the piston rod; whereby urging the piston rod outwardly from the cylinder presses the ram into the tire thereby breaking its bead.
REFERENCES:
patent: 2581086 (1952-01-01), Edenfield et al.
patent: 2900016 (1959-08-01), Woodward
patent: 2901029 (1959-08-01), Mraz
patent: 3038510 (1962-06-01), Vorkoeper et al.
patent: 3537501 (1970-11-01), Johnson
patent: 4256161 (1981-03-01), Chisum
Dorman William S.
Meislin Debra
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