Tapered piston pin

Details Tapered piston pin Tapered piston pin

1986-12-03

1987-12-15

Kundrat, Andrew V.

Joints and connections

Articulated members

Pivoted

403161, 74579E, F16C 1106

Patent

active

047129417

ABSTRACT:
A tubular piston pin for an internal combustion engine being of lightweight and high strength design with a cylindrical exterior surface and a double hourglass shaped aperture defined by thin-walled end portions; a thin-walled intermediate portion and two thicker-walled portions therebetween. A method for easy and inexpensive piston pin manufacture includes: the formation of half pins by molding a metal slug between two dies each having tapered end portions, punching out a midportion or intermediate web or wall to form an aperture therethrough with a generally hourglass shape, and aligning and joining two half pins axially together to form a piston pin with the double hourglass shaped interior aperture.

REFERENCES:
patent: 1112737 (1914-10-01), Vogt
patent: 2428602 (1947-10-01), Yingling
patent: 4359913 (1982-11-01), Mahlke
patent: 4461595 (1984-07-01), Mallas

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