Self-drilling and tapping masonry anchor

Details Self-drilling and tapping masonry anchor Self-drilling and tapping masonry anchor

1976-07-09

1977-07-12

Britts, Ramon S.

F16B 2500

Patent

active

040346412

ABSTRACT:
A self-drilling and tapping anchor for use in masonry structures which includes an upper, tapping thread portion and a lower, stabilizing and dust receiving shank portion intermediate the tapping thread and a drill tip. The lower shank has a cross-sectional configuration which defines a maximum and minimum radial dimension with the maximum dimension being greater than or equal to the hole being drilled to axially stabilize and support the fastener as it is drilled into the masonry. The minimum radial dimension and the wall of the hole forming a reservoir into which masonry dust is received during drilling.

REFERENCES:
patent: 2479730 (1949-08-01), Dewar
patent: 2656740 (1953-10-01), Bedker
patent: 3258797 (1966-07-01), Budd
patent: 3478639 (1969-11-01), Gruca
patent: 3524378 (1970-08-01), Wieber
patent: 3937119 (1976-02-01), Ernst

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