Pumps – Three or more cylinders arranged in parallel – radial – or...
Reexamination Certificate
2008-04-22
2008-04-22
Freay, Charles G (Department: 3746)
Pumps
Three or more cylinders arranged in parallel, radial, or...
C060S484000, C091S499000, C091S502000
Reexamination Certificate
active
11641783
ABSTRACT:
The present invention provides a tandem pump unit that includes: a first hydraulic pump and a second hydraulic pump respectively having a first pump shaft and a second pump shaft respectively having adjacent ends connected together so that the first and second pump shafts are coaxially aligned and non-rotatably connected in tandem; a common housing for accommodating the first hydraulic pump and the second hydraulic pump; and a first center section and a second center section that respectively support the first and second hydraulic pumps.
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Ohashi Ryota
Sumomozawa Hironori
Freay Charles G
Kanzaki Kokyukoki Mfg. Co. Ltd.
Sterne Kessler Goldstein & Fox P.L.L.C.
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