B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/22
B23B 39/16 (2006.01)
Patent
CA 1298103
- 13 - Adjustable Dual Drill Assembly Abstract An adjustable drillhead suitable for mounting on a dual bit drill gun or press is disclosed. The invention allows for variation of the spacing between two drill bits and is especially suited for use in drilling dual holes through a workpiece required for nutplates. Also disclosed are means to locate the drillhead relative to a specific location on a workpiece prior to drilling the dual holes. S-3868
539306
Swabey Ogilvy Renault
United Technologies Corporation
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