Pumps – Expansible chamber type – Valved piston
Reexamination Certificate
2005-09-12
2009-11-24
Freay, Charles G (Department: 3746)
Pumps
Expansible chamber type
Valved piston
C417S307000
Reexamination Certificate
active
07621727
ABSTRACT:
A piston used in a vehicle air-compressor or a vehicle suspension system can be dismantled by a dismantling tool so that cost for a repair is reduced while components are replaceable instead of the whole piston.
REFERENCES:
patent: 4413451 (1983-11-01), Featherstone et al.
patent: 6783333 (2004-08-01), Wang
Chan Raymond Y.
David and Raymond Patent Firm
Freay Charles G
Hamo Patrick
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