Metal deforming – By application of fluent medium – or energy field – Using fixed die
Patent
1975-12-01
1977-10-11
Gilden, Leon
Metal deforming
By application of fluent medium, or energy field
Using fixed die
72DIG14, B21D 2210
Patent
active
040528723
ABSTRACT:
A method and apparatus for manufacturing a stanchion or tube having at least two integral bulbous portions thereon are disclosed. The method involves defining at least two spaced cavities on the outside of a stanchion tube, the inner surfaces of the cavities being shaped to define the outer contours of the integral bulbous portions of the completed stanchion. A predetermined quantity of flowable and substantially incompressible material within the tube between the inner ends of two oppositely directed rods extending into the tube from the ends thereof, to cause the tube to deform in substantial conformity with the inner surface of the cavities. The process is repeated on any other regions having cavities formed on the outside thereof without firstly removing the rods from the tube.
Gilden Leon
Springbok Appointments (Proprietary) Limited
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