F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/19
F16B 13/14 (2006.01) F16B 13/00 (2006.01) F16B 13/12 (2006.01)
Patent
CA 1145598
U-Wp-1922 Gries WALL ANCHOR WITH SELF-DRILLING CAPABILITY ABSTRACT OF THE DISCLOSURE A unitary hollow plastic screw anchor which is capable of being hammered or otherwise driven into a hollow wall, with a weakened separation plane adjacent the entrance portion which is sufficiently strong to hold together during installation in the wall, and sufficiently weak to split apart when a screw is inserted into the installed anchor. Features of the anchor include a generally cross-shaped entrance end for minimal penetration resistance, a generally rectangular interior with arcuate screw centering grooves, a single turn helix adjacent the wall-engaging flange thereof to start the screw, an internal step con- figuration to accommodate screws of varying diameter, and two longitudinal slots which compress during installation to further reduce penetration resistance.
354055
Coats & Clark Inc.
Ridout & Maybee Llp
LandOfFree
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