Rotary expansible chamber devices – Interconnected vanes – Integrally connected
Reexamination Certificate
2007-08-21
2007-08-21
Denion, Thomas (Department: 3748)
Rotary expansible chamber devices
Interconnected vanes
Integrally connected
C418S254000
Reexamination Certificate
active
11086911
ABSTRACT:
A pump is provided with a housing, a rotor, and a separating member. The housing is formed by connecting two housing members. A first housing member has a cylindrical wall and a bottom wall, and the other end of the cylindrical wall is open. A second housing member comprises a sealing portion, a side portion and a connecting portion. The side portion extends from the sealing portion to the bottom side of the first housing member along an outer face of the cylindrical wall of the first housing member. The connecting portion connects a distal end of the side portion to the first housing member. The sealing portion fits tightly with the cylindrical wall of the first housing member along its entire circumference. The open end of the first housing member is reliably sealed by the second housing member. The shape of the cavity within the housing is adjusted reliably to a predetermined shape. Fluid can reliably be prevented from leaking between spaces divided by the rotor and the separating member within the housing and pump efficiency improves.
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Principles of New Machinery, 1997, Tenth Edition, p. 203 (27.13 Cary's rotary pump, part 1) “Kikai no so Fukkan Iinkai Hensha, Rikogakusha”.
Brother Kogyo Kabushiki Kaisha
Davis Mary A
Denion Thomas
Oliff & Berridg,e PLC
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