Fire building drum

Details Fire building drum Fire building drum

1988-02-12

1989-03-14

Hoag, Willard

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156417, B29D 3024

Patent

active

048121975

ABSTRACT:
A cylindrical tire building former has two sets of radially expandable segments or located one set at each axial end of the former.
The sets of segments or are expanded by engagement of each segment with an axially moveable wedge member. The wedge member may comprise an annular body, or an annular array of individual wedges. The wedge member is moved by operation of a plurality of screw struts which are arranged on a pitch circle and which are each rotated by a planet gear. The planet gears are driven simultaneously by a central sun gear to move the wedge member evenly along the screw struts.

REFERENCES:
patent: 4155796 (1979-05-01), Rambacher
patent: 4239579 (1980-12-01), Felton et al.
patent: 4683021 (1987-07-01), Stalter et al.

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