Plastic boots and method of manufacturing the same

Details Plastic boots and method of manufacturing the same Plastic boots and method of manufacturing the same

1987-08-31

1989-08-01

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277212FB, 2641771, 264506, 264523, 264531, 264538, 264541, 264542, 425438, 425533, 425DIG58, 464175, F16J 1552, B29C 4904, B29C 4906, F16D 384

Patent

active

048528919

ABSTRACT:
Plastic dust-proof boots which are made of thermoplastic resin by means of blow molding and provided at least on one end of a bellows with a stationary ring to be fitted to an engaging groove formed on an attaching shaft and methods for manufacturing the plastic boots. In the boots, an inner circumference base upright wall of the stationary ring is formed at a nearly vertical state, and the inner circumference base upright wall of the stationary ring is connected through a sleeve having an inner diameter so that the attaching shaft can be loosely fitted. In manufacturing the boots, the stationary ring and the sleeve are molded during the parison molding previously or during mold tightening at the blow molding stage, and the blow molding is performed while the stationary ring and the sleeve are grasped between molds. Accordingly, the base upright wall of the stationary ring is securely locked to the engaging groove, and the boots having the base upright wall of such shaft form can be easily molded in the blow molding process.

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