Tandem type trochoid pump and method of assembling the same

Details Tandem type trochoid pump and method of assembling the same Tandem type trochoid pump and method of assembling the same

2007-11-06

2007-11-06

Denion, Thomas (Department: 3748)

Rotary expansible chamber devices

Moving cylinder

Rotating

C029S888020, C418S010000, C418S166000

Reexamination Certificate

active

11287459

ABSTRACT:
A tandem type trochoid pump is comprised of a drive shaft having a non-circular end portion, a spacer positioned between a first trochoid pump and a second trochoid pump in a housing body, a first fixing portion for fixing a first inner rotor of the first trochoid pump to the drive shaft in a rotational direction, and a second fixing portion for fixing a second inner rotor of the second trochoid pump to the drive shaft in the rotational direction.

REFERENCES:
patent: 3244111 (1966-04-01), Shelhart
patent: 5797734 (1998-08-01), Kizer et al.
patent: 6643927 (2003-11-01), Murayama et al.
patent: 6679692 (2004-01-01), Feuling
patent: 2003/0026722 (2003-02-01), Takagi et al.
patent: 03-005990 (1991-01-01), None

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