Expansible chamber devices – Piston – Side wall portion includes peripheral axially extending...
Reexamination Certificate
2002-08-12
2008-11-04
Lazo, Thomas E (Department: 3745)
Expansible chamber devices
Piston
Side wall portion includes peripheral axially extending...
C092S182000
Reexamination Certificate
active
07444923
ABSTRACT:
A packing stack for a reciprocating piston pump is formed of alternating V's of UHMWPE and either a polyurethane thermoplastic elastomer or an olefinic thermoplastic elastomer.
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Horning Jerry D.
Thompson David J.
Farrow Douglas B.
Graco Minnesota Inc.
Lazo Thomas E
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