Ball and socket joint and method of making
AssigneeTecumseh Products Company
InventorRonald R. Wisner
Life of this patent
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Abstract
A ball and socket joint and method of making in which a piston, especially a compressor piston, and most particularly a piston for a compressor that pumps refrigerant, has a top wall and a depending skirt and is connected to the upper end of a connecting rod by a ball joint which is made by forming a spherical socket in the upper end of the connecting rod and riveting a ball to the underside of the top wall of the piston and forming the upper peripheral region of the socket of the connecting rod around the upwardly facing side of the ball. In practice, the ball is placed in the socket of the connecting rod and the rod is formed about the ball and then the ball is riveted to the piston.
Claims7
In a piston and rod assembly including a piston having a top wall and a skirt dependent therefrom and a connecting rod, a ball and socket joint for connecting said piston and connecting rod comprising:
- a generally spherical ball on the underneath side of said top wall of the piston, said ball having a truncated end providing a contiguous surface extension of a thickened portion on said top wall a hole in said ball and in said top wall, a rivet extending through said holes in said ball and piston top wall, said rivet having an enlarged head on one end in engagement with said ball and being expanded on its other end on the side of said piston top wall which faces away from said ball and into a counterbase aligned with said thickened portion, and a socket in one end of said connecting rod in which said ball is captured including means permitting universal swivelling movement of said ball therein.
Dependencies are inferred from the claim text.