Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
1993-01-29
1994-01-04
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
411 55, 411344, F16B 1304, F16B 2100
Patent
active
052755185
ABSTRACT:
A plastic fastener for mounting a hand rail to a thin wall such as a tub or shower wall is provided for which comprises a rigid anchor bar having a substantially flat bearing surface to engage a back surface of the wall and which has an arcuate length for installation in narrow spaces. The plastic fastener is molded in a flat condition and comprises a fastening head integrally connected to the anchor bar by a flexible strap. The anchor bar has a transverse slot to define a rigid block and an interconnecting flexible hinge. The plastic fastener includes a bolt adapted to extend through an opening in the fastening head and to be threaded into an opening in the anchor bar as the plastic fastener is bent about the flexible hinge to form a fastener assembly. The fastener assembly is mounted to the wall so that the anchor bar is inserted through an opening in the wall to extend behind the wall as the fastening head is maintained within the opening. As the bolt is advanced, the fastening head is drawn toward the anchor bar as the flexible strap collapses. The anchor bar with the hinged block provides a bearing surface across the opening in the wall sufficient to resist forces applied to the hand rail. The fastening head includes an indicator to locate the center axis of the anchor after installation for positioning the anchor bar at a maximum load bearing position.
REFERENCES:
patent: 3288014 (1966-11-01), Mortensen
patent: 4439079 (1984-03-01), Losada
patent: 4453869 (1984-06-01), Cremieux
patent: 4502826 (1985-03-01), Fafard
patent: 4650386 (1987-03-01), McSherry et al.
C. D. Sparling Company
Wilson Neill R.
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