Expansible chamber devices – With means to control fluid flow from non-working chamber
Reexamination Certificate
2007-09-18
2007-09-18
Leslie, Michael (Department: 3745)
Expansible chamber devices
With means to control fluid flow from non-working chamber
C092S078000, C092S140000
Reexamination Certificate
active
10507856
ABSTRACT:
A pump (1) with an oscillating part having a housing (2) with a working chamber (3) and a crankcase (4) defined from the working chamber by the pump part. A pump drive mechanism (6) with a drive shaft (7) is located inside the crankcase (4) and the drive shaft is mounted on bearings (8, 9) that are arranged in the walls of the crankcase. The pump has a suction inlet separate from the crankcase. The pump (1) includes at least one flow channel in the crankcase wall for compensating pressure in the crankcase when the pump part oscillates and a flow damper arranged in the at least one flow channel. In a preferred embodiment, the at least one passage hole having at least one bearing therein is configured as the flow channel.
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Niemann, G: Maschinenelemente. Band 1 Konstruktion und Berechnung von Verbindungen, Lagern, Wellen. 2. neubearb. Auflage Berlin [u.a]: Springer, 1975, (16 Schmierstoffe, Schmierung und Dichtung, Tafel 16/8. Gebrāuchliche berūhrende Dichtungen), S. 342. ISBN: 3-540-06809-0.
Becker Erich
Hauser Erwin
KNF Neuberger GmbH
Leslie Michael
Volpe and Koenig P.C.
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