Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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B21K
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
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21/00
Making hollow articles not covered by a single preceding sub-group
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B21K21/08
Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
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B21K21/10
cone-shaped or bell-shaped articles, e.g. insulator caps
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B21K21/10

COLD HEADING FORMED WEDGE FOR USE IN POST TENSIONING CONCRETE
20170036262 · 2017-02-09 ·

A wedge for use in post tensioning concrete is formed by cold heading. The cold heading operation may include providing a wire, feeding the end of the wire into a cold heading apparatus, cold heading the end of the wire to form at least one wedge blank, and finishing the wedge blank to form the wedge.