Floor nail

Details Floor nail Floor nail

1975-07-07

1976-08-31

Purser, Ernest R.

Static structures (e.g., buildings)

Settable material receiving backer fixed to furring, joist,...

Impaling-type fastener

52362, 52727, 85 20, 52729, E04C 316, E04B 552

Patent

active

039771423

ABSTRACT:
This invention provides a fastener which includes a shank having a head on one end and a conical portion on the other, the apex of the conical portion constituting a piercing point for the fastener. The shank includes a smooth cylindrical portion adjacent the conical portion and a threaded portion adjacent the head. The axial section of the fastener exhibits an abrupt, angled transition between the conical portion and the smooth cylindrical portion. The thread diameter of the threads on the threaded portion is greater than the diameter of the smooth cylindrical portion, which is the same as the base diameter of the conical portion. The thread angle of the threads is between about 35.degree. and about 55.degree., and the included cone angle of the conical portion is between about 23.degree. and about 35.degree..

REFERENCES:
patent: 1953592 (1947-03-01), Deniston
patent: 2558379 (1951-06-01), Phipard, Jr.
patent: 2605867 (1952-08-01), Goodwin

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