US PATENT SUBCLASS 74 / 587
.~.~ Hollow rod, lubricated

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

*  DD  ELEMENTS {10}
579 R  DF  .~ Pitmans and connecting rods {10}
587.~.~ Hollow rod, lubricated

DEFINITION

Classification: 74/587

(under subclass 579) Devices comprising connecting rods having a hollow shank or an oil conduit incorporated therewith, between the opposite bearing ends, whereby lubricant can be supplied to said ends.

SEE OR SEARCH CLASS

184, Lubrication,

6, for systems and subclass 24, for swab piston-rod lubricators.