Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
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
Emhart Inc.
Lindsey Rodney M.
Smith Spencer T.
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