Apparatus for producing a cam with sinusoidal cam lobe surfaces
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United States of America Patent
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Jan 27, 1987
Issued Date -
N/A
app pub date -
Aug 1, 1985
filing date -
May 3, 1979
priority date (Note) -
Expired
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Abstract
The apparatus described herein is capable of producing a cam which has a cam lobe having opposite sinusoidal surfaces which have at least two rises and at least two dips in 360.degree. of each sinusoidal surface with the rises in one such surface being opposite to the dips in the other such surfaces. These sinusoidal surfaces are designed so that they may be in full, centerline contact with pairs of bearings attached to connecting rods, these bearings being on opposite sides of the cam lobe and at one time being driven in one direction by one of the two pistons in each pair and then at another time in the opposite direction by the other piston in that pair, the two pistons of that pair being connected to each other by the same connecting rod carrying the bearings which are adapted to press against the cam lobe. The surfaces of the cam lobe are designed to avoid friction or binding between the bearings and the cam lobe. An engine for which this cam is particularly useful is described in applicant's U.S. Pat. No. 4,432,310 issued on Feb. 21, 1984.
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