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A pushnut fastener for use in conjunction with a cylindrical shaft having a pair of opposed flat surfaces extending therealong. The pushnut has an opening that complements the shape of the shaft and includes arcuate blades that are, in assembly, biased in contact with the arcuate surfaces of the sha

A pushnut fastener for use in conjunction with a cylindrical shaft having a pair of opposed flat surfaces extending therealong. The pushnut has an opening that complements the shape of the shaft and includes arcuate blades that are, in assembly, biased in contact with the arcuate surfaces of the shaft and straight blades that are biased in contact with the flat surfaces of the shaft. In a relaxed condition, the straight blades are generally parallel with the horizontally disposed base of the nut and the arcuate shaped blades are set at an angle of about 45.degree. with the base.

대표청구항 ▼

[ What is claimed is:] [1.] A pushnut fastener for engaging a cylindrical shaft or stud having a pair of parallel opposed flat surfaces, said pushnut including,a sheet metal cup-shaped member having a flat horizontally disposed rim and a raised center section having a top surface that is parallel wi

[ What is claimed is:] [1.] A pushnut fastener for engaging a cylindrical shaft or stud having a pair of parallel opposed flat surfaces, said pushnut including,a sheet metal cup-shaped member having a flat horizontally disposed rim and a raised center section having a top surface that is parallel with said rim, said rim and center section being coaxially aligned about a vertical axis,said raised section of said member having a stud receiving opening that is symmetrical about said vertical axis, said opening having a pair of parallel opposed side walls and a pair of arcuate end walls, each end wall having a radius centered upon said vertical axis,said end walls and side walls forming corners to establish an elongated straight blade along each of said side walls and an arcuate shaped blade along each of said end walls, whereby the blades are deformable by a shaft or stud passing downwardly through said opening,a radially extended cutout at each of said corners, andeach of said arcuate shaped blades being turned inwardly toward said rim of said members at an angle of about 45.degree. with said rim.