Pumps – Motor driven – Fluid motor
Reexamination Certificate
2004-01-30
2010-10-05
Kramer, Devon C (Department: 3746)
Pumps
Motor driven
Fluid motor
C417S474000
Reexamination Certificate
active
07806668
ABSTRACT:
A flexible tube20has an inlet side fixed end21, and an outlet side fixed end22, and an elastic deformation portion23is provided between them. The elastic deformation portion23is provided with convex arc portions42. In the convex arc portions42, three apices41provided apart at approximately regular intervals in the circumferential direction are each curved in a convex shape outward so as to have smaller curvature radius than that of a virtual circle S tangent to the apices41from each apex as a center for deformation. Concave arc portions43are formed consecutively between the respective convex arc portions42in circumferential direction, and the concave arc portions43are each curved in a concave shape outward. At a time of expansion and shrinkage of the elastic deformation portion, the respective convex arc portions42elastically deform in the circumferential direction, and the concave arc portions43elastically deform in the radial direction.
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Office Action dated Aug. 24, 2007 issued by Chinese Patent Office in corresponding Chinese application.
Bertheaud Peter J
Koganei Corporation
Kramer Devon C
McCormick Paulding & Huber LLP
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