Screw anchor

Details Screw anchor Screw anchor

1990-06-01

1991-09-03

Lindsey, Rodney M.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Bulged by axially contracting ends

411 15, F16B 1304

Patent

active

050448498

ABSTRACT:
A two part screw anchor which is interconnected by capturing a pin on the receiving bore of a cap in an arcuate slot on the received cylinder of a collapsible part. The collapsible part is metal and the cap (and hence pin) are plastic so that by pushing the collapsible part away from the installed cap the pin will be severed and the two parts can be separated.

REFERENCES:
patent: 2236079 (1941-03-01), Wipper
patent: 3888156 (1975-06-01), Fima
patent: 3942407 (1976-03-01), Mortensen
patent: 4158983 (1979-06-01), Amico
patent: 4422813 (1983-12-01), Greenbaum

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