Spacer in metal-mold vulcanizer for rubber hose

Details Spacer in metal-mold vulcanizer for rubber hose Spacer in metal-mold vulcanizer for rubber hose

1982-12-23

1985-01-15

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

249187R, 264325, 264347, 425395, 425403, 425468, B29C 100

Patent

active

044936320

ABSTRACT:
An annular spacer to be used, during the vulcanization in a metal mold of an unvulcanized rubber hose having a mandrel pierced therethrough, as fitted around the mandrel in intimate contact with either of the opposite ends of the aforementioned unvulcanized rubber hose. This annular spacer has an outside diameter greater than the inside diameter of the depression in the aforementioned metal mold and an inside diameter enough for the spacer to be inserted around the aforementioned mandrel, contains in the periphery thereof a plurality of grooves formed in the axial direction of the spacer, and is made of a material softer than the materials of the aforementioned metal mold and mandrel. By the use of such spacers of this invention having the aforementioned characteristics, therefore, rubber hoses of a fixed outside diameter can be manufactured in any desired length in one and the same metal mold.

REFERENCES:
patent: 897309 (1908-01-01), Sill
patent: 1130030 (1915-03-01), Sill
patent: 1337930 (1920-04-01), Lowe
patent: 3371381 (1968-03-01), Louth

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