Joints and connections – Articulated members – Pivoted
Patent
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
Chrysler Motors Corporation
Kundrat Andrew V.
MacLean, Jr. Kenneth H.
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