Joints and connections – Having a joining piece extending through aligned openings in...
Patent
1979-01-25
1980-12-09
Britts, Ramon S.
Joints and connections
Having a joining piece extending through aligned openings in...
85 41, 85 50R, 151 37, F16B 502, F16B 4300
Patent
active
042381657
ABSTRACT:
A fastener unit for clamping plastic material having a first predetermined thickness to a relatively thin sheet metal support having a second predetermined thickness. The fastener unit includes a spacer collar having a length substantially equal to the first predetermined thickness, the plastic having a hole to receive the collar. The collar surrounds the upper portion of a threaded shank and the end abuts the sheet metal. The spacer collar has an internal diameter which forms a gap with the threads of a size approximately equal to the second predetermined thickness. As the fastener is threadingly advanced into the sheet metal, the end of the collar serves as a fulcrum about which the threads bend the material which forms the edge of the hole into the gap increasing the stripping torque of the fastener unit.
REFERENCES:
patent: 1674258 (1928-06-01), Obergfell et al.
patent: 1809758 (1931-06-01), Rosenberg
patent: 2076041 (1937-04-01), Payne
patent: 2275315 (1942-03-01), Ray
patent: 2779376 (1957-01-01), Poupitch
patent: 3016941 (1962-01-01), Coldren
patent: 3286579 (1966-11-01), Lovisek
patent: 3315720 (1967-04-01), Gutshall
patent: 4193434 (1980-03-01), Wagner
Britts Ramon S.
Buckman Thomas W.
Illinois Tool Works Inc.
Thomson Richard K.
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