Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1984-02-27
1985-11-19
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Assembling or joining
1661175, B23P 1100
Patent
active
045533105
ABSTRACT:
A method of forming one end of a sidepocket mandrel into a tubular shape having an internal diameter large enough to receive an orienting sleeve, moving an orienting sleeve through the formed end, securing the sleeve to the mandrel, and reforming said end for reducing the internal diameter of the end sufficiently to form a premium female thread therein. The method of making an integrally formed sidepocket mandrel having a one-piece body with a main bore and an offset bore. Both ends are formed into tubular shapes while leaving a middle section unworked whereby the middle section forms a main bore and an offset bore. The tubular ends are reduced in size and shaped to form thickened walls which are aligned at the opposite ends of the main bore. During forming, one end, such as the bottom, is formed approximately sized for receiving thread, and the other end, preferably the top, is formed with an internal diameter sized to pass an orienting sleeve. After securing an orienting sleeve in the main bore, the top end is then reformed to reduce its internal diameter to approximately the internal diameter of the orienting sleeve and to provide material to cut an internal premium thread.
REFERENCES:
patent: Re29870 (1978-12-01), Moore, Jr. et al.
patent: 2828537 (1958-04-01), Pischke et al.
patent: 3741299 (1973-06-01), Terral
patent: 4333527 (1982-06-01), Higgins et al.
patent: 4416330 (1983-11-01), Merritt et al.
Camco Incorporated
Goldberg Howard N.
Selman Leonard S.
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