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Connecting rod and piston for an oil-less pneumatic motor

  • US 10,408,058 B2
  • Filed: 12/04/2015
  • Issued: 09/10/2019
  • Est. Priority Date: 12/05/2014
  • Status: Active Grant
First Claim
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1. An oil-less pneumatic motor comprising a connecting rod and piston assembly;

  • said connecting rod comprising at least two ends, connected to each other by a connecting member of a predetermined length;

    said at least two ends comprising a piston end and a crankshaft end;

    said piston end being distant said crankshaft end;

    said piston comprising a cylinder end and a connecting rod piston end receiving end, wherein said connecting rod piston end receiving end matingly engages said connecting rod piston end;

    said piston end being substantially ball shaped and said crankshaft end shaped for engagement with a crankshaft wherein said crankshaft end is arcuate shape with a raised arcuate edge of a radial thickness greater than a greatest thickness of said connecting member in a direction of the rotational axis of the crankshaft for use with a combination retaining ring/thrust washer and said connecting rod piston end receiving end further comprises a piston seal, for sealing said connecting rod piston end in said piston;

    said connecting rod piston end receiving end being substantially socket shaped for matingly receiving said ball shaped piston end;

    said connecting rod and piston assembly in an oil-less pneumatic motor driving paint mixing paddles.

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