Connecting rod without wrist pin
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United States of America Patent
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-
Feb 19, 2013
Grant Date -
Jul 8, 2010
app pub date -
Jan 7, 2010
filing date -
Jan 8, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A reciprocating pump assembly has a pump within a housing. The pump has a crankshaft that rotates and a crosshead that is connected to a plunger via a pony rod. The plunger pumps fluid through cylinders in the pump. A connecting rod connects at one end to the crankshaft and at another end to the crosshead to translate the crankshaft's rotational movement into linear movement of the crosshead and thereby the plunger. The end connected to the crosshead is secured to the crosshead by a bushing located within the crosshead that allows the connecting rod end to pivot during operation. The bushing extends more than 180 degrees, retaining the connecting rod with the crosshead without the need for a wrist pin. The end secured by the bushing can be retained within the bushing by a lock plate, and retainers without the need for a wrist pin.
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