Wheelwright machines – Rubber tire mounting and/or demounting apparatus – For collapsing or shifting tire axially
Patent
1988-05-23
1989-02-14
Meislin, Debra
Wheelwright machines
Rubber tire mounting and/or demounting apparatus
For collapsing or shifting tire axially
B60L 2506
Patent
active
048040304
ABSTRACT:
Apparatus for separating the bead of a tire from the wheel upon which it is mounted includes first and second cylinders having their respective piston rods coupled to a movable shoe element for engaging and displacing the bead of the tire. Coordinated extension and retraction of the piston rods of the first and second cylinders under the control of a pneumatically actuated, hydraulic control system is accomplished by manual operation of a first hydraulic transfer valve and a second air charging valve. The apparatus includes a single, unitary support frame having an inclined, manually rotatable table upon which the tire and wheel combination is positioned for engagement by the shoe element in an arrangement which is compact, facilitates handling and positioning of the tire and wheel combination, and provides improved safety for the operator.
REFERENCES:
patent: 2413010 (1946-12-01), Teegarden
patent: 3142330 (1964-07-01), Nelson
patent: 3612140 (1971-10-01), Malinski
patent: 3722570 (1973-03-01), McKenny
patent: 4014375 (1977-03-01), Malinski et al.
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