Self-aligning dome nut

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG.
1, the dome nut of the present invention includes four basic parts, namely, a base member 1, a floating nut member 2, a protective covering dome 3 and an O-ring sealing member 4.
The parts of the dome nut are shown in assembled condition in FIG.
2.
FIG.
2 also shows the dome nut attached into a hole 5 of a support member 6.
In construction, the base member of the dome nut includes a neck portion 7 extending from one side 8 thereof.
The neck portion includes serrations 9 on its peripheral surfaces; and upon insertion into the hole 5 of the support member 6, the serrations will cut into the wall surfaces of the hole and prevent rotation of the base member relative to the support member.
A hole 10 extends through the neck portion of the base member and communicates with a cavity 11 formed in the other side 12 of the base member.
The cavity is dimensioned to receive the floating nut 2.
As shown, the floating nut includes an internally threaded bore 13 and a pair of diametrically disposed wing members 14.
The cavity is circular in shape at the end thereof adjacent the side 12 of the base member.
The bottom portion 15 of the cavity may be milled to a rectangular shape for receiving the wing members 14 of the nut 2.
This construction will prevent unlimited rotation of the nut within the cavity.
Other suitable means may be provided for preventing such rotation.
The protective covering dome has an open end 16 defined by an enlarged skirt portion 17.
The skirt portion terminates in a radially outwardly extending flange 18.
The dome is adapted to be inserted into the cavity of the base member in relatively tight engagement with the circular wall surface and with the flange 18 snapping into a cooperating groove 19 formed in the wall surface.
When in assembled position, the dome covers the cavity and the nut disposed therein.
With reference to FIG.
2, it is seen that the dome is constructed with a surface 20 connecting the skirt 17 with the upper dome portion 21