Fastening clip intended to be fastened with nail-driving tool

Claim 1

A fastening clip for wires, pipes and similar parts attachable to a support by means of a nail-driving gun having a muzzle portion, said fastening clip comprising: a plate member including an opening and a pair of tongues integral with the plate member and protruding from one side of the plate member substantially normal thereto at two opposite edges of said opening, said tongues being of substantially equal length and terminating in inwardly curved and spacedapart end portions, the facing edges of said end portions being substantially coplanar in a plane substantially parallel to the plate member and Overlying part of said opening thereby providing a passage for a headed nail to be driven in conjunction with the clip by the nail-driving gun, the maximal outer peripheral outline of the tongues being selected so that an imaginary circle just encircling said outline fits the inner diameter of the muzzle portion of the gun with which the clip and the nail are to be driven thereby releasably retaining the clip and the nail in said muzzle portion, said tongues having a substantially S-shaped lengthwise cross section, the maximal distance between the outwardly facing bulges of the tongues defining the diameter of said imaginary circle; and a washer placeable upon the outside of the inwardly curved tongue portions, said washer having an outer diameter at the most equal to the diameter of said imaginary circle and an inner diameter fitting the shank of the nail to be driven, the distance between the tongue ends being greater than the nail diameter and the inner diameter of the washer being also greater than the distance between the tongue ends.