Machine element or mechanism – Elements – Pitmans and connecting rods
Patent
1986-12-23
1988-10-18
Smith, Gary L.
Machine element or mechanism
Elements
Pitmans and connecting rods
74579E, 74581, 74586, 123197AB, 123197AC, 403 28, 92187, 92212, 92222, G05G 100, F16J 114
Patent
active
047778440
ABSTRACT:
A compression linkage is disclosed for use between a first swivel pin having a first thermal expansion characteristic and a second swivel pin of a second and differing thermal expansion characteristic, comprising: (a) a first shaft comprised of substantially the same material as the first pin and having a mateable end and another end adapted for swivel connection to said first pin; (b) a second shaft comprised of substantially the same material as the second pin and having a mateable end and another end adapted for swivel connection to said second pin; and (c) means providing a rigid compression joint between the mateable ends of said first and second shafts. Preferably, the first pin is adapted to operate in a high temperature environment, such as 400.degree.-500.degree. F., and is comprised of a ceramic effective to have a flexural strength of at least 100,000 psi (500 MPa) in such temperature range. The material for the second pin is preferably comprised of metal having a tensile strength of at least 550 MPa and a coefficient of thermal expansion in the range of 8-20 ppm/.degree. K. The metal may be selected from the group consisting of high carbon steel and sintered powdered metal.
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DeBell George C.
Ounsted Edwin J.
Ford Motor Company
Lindsey Rodney M.
Malleck Joseph W.
May Roger L.
Smith Gary L.
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