Textiles: cloth finishing – Expanding device for textile webs – Spreader
Patent
1984-04-02
1985-08-20
Goldberg, Howard N.
Textiles: cloth finishing
Expanding device for textile webs
Spreader
29557, 29558, 29DIG26, 72325, 72348, 72370, 251367, B21D 5300
Patent
active
045355193
ABSTRACT:
A method of manufacturing a valve sleeve which is combined with a valve rotor to form a hydraulic rotary valve comprises a first step of expanding one end of a cylindrical member, a second step of forming a plurality of axial grooves in the internal surface of the cylindrical member while leaving its opposite ends intact, and a third step of restoring the expanded portion to its original diameter which it assumes before the expanding step.
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patent: 4419877 (1983-12-01), Alfano
patent: 4442579 (1984-04-01), Millard
Kajikawa Hiromi
Sugita Masao
Goldberg Howard N.
Jidosha Kiki Co. Ltd.
Wallace Ronald S.
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