Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1975-07-07
1977-04-26
Geoghegan, Edgar W.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
92 72, F16H 2118
Patent
active
040193950
ABSTRACT:
Apparatus is disclosed for translating rotary motion into reciprocating motion, of the type utilized in piston operated pumps. The apparatus includes a crank shaft having one or more axially offset diameter segments, each segment having a block bearing partially encircling it, and the block bearing having a raised shoulder for mating with a piston surface groove. The piston is spring biased so as to hold the assembly comprising the piston, block bearing, and offset diameter segment together in a unitary assembly, so that rotation of the shaft causes the piston to reciprocate.
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Clements William
Vork William D.
Geoghegan Edgar W.
Graco Inc.
Sjoquist Paul L.
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