Static structures (e.g. – buildings) – Cast in situ concrete barrier with laterally projecting... – Sheet-form backer supported on upper terminal of sustainer
Patent
1993-04-27
1996-02-27
Safavi, Michael
Static structures (e.g., buildings)
Cast in situ concrete barrier with laterally projecting...
Sheet-form backer supported on upper terminal of sustainer
52334, 219 98, 411171, 411501, D8382, D8386, F04B 519, F16B 1900
Patent
active
054938333
ABSTRACT:
A welding stud designed to have reduced weight without loss of strength by having a stepped diameter, cylindrical form shank with a relatively thin head. The head is centrally depressed and the shank is of a first relatively large diameter closely adjacent the head and is extruded to a smaller diameter from there to the end opposite the head. The weight is additionally reduced by providing the head with a central depression which extends into the head from the axial outer end. The method of forming the stud starts with a workpiece of a diameter larger than the final desired stud diameter and cold heading the workpiece to form the stud head. Thereafter, the shank of the workpiece from a point spaced from the head to the free end of the shank is extruded through a circular die to reduce its diameter to the desired final diameter throughout the majority of its length.
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Safavi Michael
TRW Inc.
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