Machine element or mechanism – Elements – Cranks and wrist pins
Patent
1995-01-10
1997-09-09
Bonck, Rodney H.
Machine element or mechanism
Elements
Cranks and wrist pins
74595, 1231974, F16C 320, F02B 7532
Patent
active
056644647
ABSTRACT:
To boost RPM and to minimize the back and forth transfer of kinetic energy between a crank and a connector/reciprocating member in mechanisms having a stroke that is four times the crankpin offset, a connector which attaches the reciprocating member to the crank is weighted with counterweights to produce an effective connector center of mass at a location on the connector that, while rotating around the crankpin defines a motion perpendicular to the oscillation of the reciprocating member such that the resulting translational inertia of the connector is equal to but perpendicular and ninety degrees out of phase with the translational inertia of the reciprocating member so that their combined kinetic energy is constant, thus resulting in a zero transfer in energy between the crank and the connector/reciprocating member through each revolution unless external force is applied to the crank or to the reciprocating member.
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Battista Mary Ann
Bonck Rodney H.
Carney Vincent L.
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