04219522 is referenced by 13 patents and cites 4 patents.

A method of manufacturing reinforced plastic hoses comprising extruding and shaping plastic material into a plastic tube which is provided around its outer surface with a serrated portion, heating said plastic tube so as to soften said serrated portion, and covering the outer surface of said plastic tube with a reinforcing layer.

Title
Method of manufacturing reinforced plastic hoses
Application Number
5/971132
Publication Number
4219522
Application Date
December 19, 1978
Publication Date
August 26, 1980
Inventor
Hiroichi Oyama
Yokohama
JP
Agent
Sughrue Rothwell Mion Zinn and Macpeak
Assignee
Bridgestone Tire Company
JP
IPC
B29D 23/05
B29C 17/00
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