Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1987-08-03
1989-06-27
Gorski, Joseph M.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29428, 72368, 138154, B21C 3706
Patent
active
048416169
ABSTRACT:
A method of fabricating elbow conduit including constructing a conduit development having a set of sequential segments, each segment having a lateral axis parallel to corresponding lateral axes of the other segments and a longitudinal axis skewed at least in part with respect to the lateral axis and having the same orientation as the corresponding longitudinal axes of the other segments in the set. The segments are joined end-to-end and the dimensions of the joined segments are transferred to a continuous length of material to generate a continuous blank havng periodically varying opposing boundaries. At least one outer alignment mark is defined on each segments of the blank to establish an outer ridge line on the outside circumference of the elbow and at least one inner alignment mark is defined on each segment to establish an inner ridge line on the inner circumference of the elbow. The method further includes helically winding the continuous blank to align the inner and outer alignment marks and join the abutting boundaries to form an elbow conduit. Helically wound elbow conduits formed from a continuous blank having curvilinear or rectilinear opposing boundaries are also disclosed.
REFERENCES:
patent: 2171195 (1939-08-01), Sonesson
Gorski Joseph M.
Iandiorio Joseph S.
The Charles Stark Draper Laboratory Inc.
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