Pumps – Motor driven – Including means for facilitating assembly or disassembly of...
Reexamination Certificate
2007-12-18
2007-12-18
Stashick, Anthony (Department: 3746)
Pumps
Motor driven
Including means for facilitating assembly or disassembly of...
C417S410400
Reexamination Certificate
active
10985169
ABSTRACT:
A pump suitable for use with contamination-sensitive fluids such as food products or pharmaceutical fluids includes an outer casing containing an internal cavity, the outer casing having an enlarged opening on one end, a second opening on an opposite end, a first inlet port and a first outlet port. The internal cavity has pumping parts disposed substantially within the cavity, the pumping parts comprising end blocks each having a drive and idler shaft support, a drive shaft and an idler shaft, a plurality of pumping wheels, and a center block with an internal cavity defining a pumping chamber. The enlarged opening of the outer casing is sealed by an end cap, an elastomeric seal and a quickly removable industry-standard clamp. The second opening of the outer casing is provided for the drive shaft and is sealed by an elastomeric shaft seal. The pumping wheels are rotationally active with, but not axially retained, on respective support shafts and are substantially free to slide on their respective axes.
REFERENCES:
patent: RE25567 (1964-05-01), Lorenz
patent: 3263425 (1966-08-01), Rohde
patent: 5755566 (1998-05-01), Marsillo et al.
patent: 6033193 (2000-03-01), Pieters et al.
patent: 6210138 (2001-04-01), Cortez
patent: 6764284 (2004-07-01), Oehman, Jr.
patent: 6857860 (2005-02-01), Zimmermann et al.
Steripump, Nova Packaging Systems, 7 New Lancaster Rd., Leominster, MA, 01453 shown disassembled, p. 3.
Fillit/PowerFillit, Nova Packaging Systems, 7 New Lancaster Rd., Leominster, MA, 01453 pp. 1, 2, 4, 5.
Swiftpack-King, Swiftpack House, 3 Arden Road, Arden Forest Ind. Estate, Alcester, Warwickshire, UK.
Lewis Graham Louis
Yablonovitch Max
Dwivedi Vikansha
Marsh Richard L.
Stashick Anthony
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