Static structures (e.g. – buildings) – Disparate sheet lamina between exposed surfaces of wall,... – Tie crossing dividing lamina
Patent
1991-01-16
1993-12-07
Safavi, Michael
Static structures (e.g., buildings)
Disparate sheet lamina between exposed surfaces of wall,...
Tie crossing dividing lamina
411387, 411417, 411533, E04D 514, F16B 2510
Patent
active
052674231
ABSTRACT:
A self-drilling anchor and bearing plate assembly adapted to secure a membrane or other layer onto a roof deck or a similar substrate formed of a material that requires a drilled hole to receive the anchor. The bearing plate which rests on the layer and includes barbs which press into the layer to resist rotation of the plate, has an opening therein to accommodate the anchor, the opening being surrounded by a series of ratchet teeth. The anchor head is provided with at least one pawl which when the head overlies the plate is then in operative relation with the ratchet teeth. Extending from the head is a shank section in an auger formation, and extending from the shank section is a drill section having at least one cutting blade. When the anchor is inserted in the plate opening and is turned in by a tool, the drill section then proceeds to drill a hole in the substrate, and as the shank section enters this hole, its auger taps an internal thread in the hole to securely retain the anchor therein. When the anchor reaches the point where its head rests on the plate, then further turning in of the anchor to urge the plate against the layer causes the pawl to ride over the ratchet teeth, thereby permitting further turning in. But should the anchor thereafter seek to turn out, the pawl then engages the ratchet teeth to resist this motion and prevent loosening of the installed assembly.
REFERENCES:
patent: 4250674 (1981-02-01), Feist
patent: 4726164 (1988-02-01), Reinwall et al.
patent: 5069589 (1991-12-01), Lemke
patent: 5102275 (1992-04-01), Hulsey
Ebert Michael
Safavi Michael
LandOfFree
Self-drilling anchor and bearing plate assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-drilling anchor and bearing plate assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-drilling anchor and bearing plate assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2008740