Device for manufacturing boots and the like of elastomeric mater

Details Device for manufacturing boots and the like of elastomeric mater Device for manufacturing boots and the like of elastomeric mater

1979-09-18

1981-05-12

Hoag, W. E.

Static molds

Having inflatable element

12135R, 12136R, 249 83, 249160, 249185, 425119, 425129S, 425417, 425442, 425DIG14, 425DIG44, 425DIG58, 425DIG112, 425470, B29C 112, B29D 302

Patent

active

042667500

ABSTRACT:
A mold for molding a boot or similar footwear from an elastomeric composition and simultaneously lining the footwear with a fabric, has first and second shells each having a cavity which complements the cavity of the other to form a large cavity which corresponds to the upstanding sides of the footwear and a third shell which has a cavity corresponding to the sole thereof. The three shells are assembled together with a rigid core member enclosed therein which defines the inside of the boot. The core member has an elastically expandable casing. Conduits are arranged in the core member for conveying a fluid under pressure to expand the casing.

REFERENCES:
patent: 2907074 (1959-10-01), Rhodes
patent: 3113830 (1963-12-01), Boccoli
patent: 3302244 (1967-02-01), Ludwig
patent: 3324220 (1967-06-01), Goy
patent: 3454992 (1969-07-01), Santelmann
patent: 3458611 (1969-07-01), Roberts

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