Metal working – Method of mechanical manufacture – Electrical device making
Patent
1991-08-08
1992-12-01
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
29876, 439877, H01R 418
Patent
active
051670666
ABSTRACT:
A method for producing a tubular insulator comprising providing a tubular insulator including a longitudinal tubular structure defining a first tubular end, a second tubular end and a central tubular structure between the first tubular end and the second tubular end. The longitudinal tubular structure further defines a longitudinal bore having a generally uniform first internal diameter generally throughout the longitudinal tubular structure including through the first tubular end and through the central tubular structure and through the second tubular end. The method further comprises flaring the first internal diameter of the longitudinal bore in the first tubular end into a second internal diameter that is larger than the first internal diameter to produce a tubular insulator including a longitudinal tubular structure defining the first tubular end having a longitudinal bore with the second internal diameter, and the central tubular structure and the second tubular end both having the longitudinal bore with the first internal diameter. The method still further includes flaring the first internal diameter of the longitudinal bore in the second tubular end into a third internal diameter that is larger than the second internal diameter of the first tubular end to produce a tubular insulator comprising a longitudinal tubular structure defining the first tubular end having the longitudinal bore with the second internal diameter, the central tubular structure having the longitudinal bore with the first internal diameter, and the second tubular end having a longitudinal bore with the third internal diameter.
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Chi der Automatic Machine Company Handbook to Chi der Automatic Machine Co. of Taiwan, admitted prior art (prior to 1990), 6 printed pages & 22 Figures.
Three (3) Pictures Illustrating & Picturing the Chi der Automatic Machine (prior art).
Carpenter John Wade
Eley Timothy V.
Mize & Co., Inc.
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