US PATENT SUBCLASS 452 / 42
.~.~.~ Reciprocating piston
Current as of:
June, 1999
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452 /
HD
BUTCHERING
30
DF
SAUSAGE MAKING
{7}
35
DF
.~ Stuffing {4}
40
DF
.~.~ Pump type {3}
42
.~.~.~ Reciprocating piston {1}
43
DF
.~.~.~.~
> Fluid motor
DEFINITION
Classification: 452/42
Reciprocating piston:
(under subclass 40) Subject matter wherein the stuffing is forced into the casing by a piston which reciprocates back and forth in a straight line.
SEE OR SEARCH CLASS
92, Expansible Chamber Devices, appropriate subclasses for pump subcombinations in which the working member has a reciprocating motion.
100, Presses,
179+, for concurrent pressing and conveying presses of the type in which a plunger forces material through a tube, not elsewhere provided for.
417, Pumps,
437+, for expansible chamber pumps which include (1) drive means, (2) valving for the pumped fluid, or (3) a diverse pump.
