Mobile bead breaker

Details Mobile bead breaker Mobile bead breaker

2006-03-14

2006-03-14

Meislin, Debra S (Department: 3723)

Wheelwright machines

Rubber tire mounting and/or demounting apparatus

For collapsing or shifting tire axially

C157S001200, C157S001260

Reexamination Certificate

active

07011131

ABSTRACT:
A mobile bead breaker (100) may be provided comprising a pair of conjoined housings (102, 104). In a first of such housings (104) may be the control and drive mechanisms of the present invention including a pump, hydraulic ram (118), a vertical guide plate (114) and the apparatus' controls. In the second of such housings (102) may be located a supporting wall (122) and for smaller tires a positioning rod (126) for locating and then maintaining the tire/rim assembly in a stationary vertical position for engagement by the bead breaker mechanism. The bead breaker mechanism, additionally located within the second housing (102), may be a spider assembly (200) comprising a plurality of legs (202) equally spaced about a central hub (206). The central hub (206) of such spider assembly (200) may be mounted to the hydraulic ram (118). When the ram (118) is activated, the spider assembly (200) moves toward and engages the tire/rim assembly about the bead of the tire to break the rim/bead seal.

REFERENCES:
patent: 2893478 (1959-07-01), Crawford
patent: 3149661 (1964-09-01), Pardee
patent: 3160196 (1964-12-01), Ohlsen et al.
patent: 3850221 (1974-11-01), Zrostlik et al.
patent: 3972363 (1976-08-01), West et al.
patent: 4059140 (1977-11-01), Sedgwick
patent: 4102380 (1978-07-01), Holder
patent: 4226275 (1980-10-01), Robins

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