Refrigerant pump with rotors in bearing

Details Refrigerant pump with rotors in bearing Refrigerant pump with rotors in bearing

2006-05-09

2006-05-09

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Electric or magnetic motor

C417S410400, C417S557000, C417S437000

Reexamination Certificate

active

07040875

ABSTRACT:
A refrigerant pump includes a thin-walled hermetic vessel and a thick-walled hermetic vessel having an end inserted into and secured to an end of the thin-walled hermetic vessel. A stator of an electric motor unit is fitted outside the thin-walled hermetic vessel, while a rotor of the electric motor unit is accommodated inside the thin-walled hermetic vessel. A pump mechanism is fitted inside the thick-walled hermetic vessel, and a rotational force of the rotor is transmitted to the pump mechanism by the drive shaft.

REFERENCES:
patent: 3790309 (1974-02-01), Volz
patent: 4470772 (1984-09-01), Gannaway
patent: 6082984 (2000-07-01), Matsumoto et al.
patent: 6176691 (2001-01-01), Tsubokawa
patent: 6203290 (2001-03-01), Tamura et al.
patent: 6814549 (2004-11-01), Kimberlin et al.
patent: 2283887 (1990-11-01), None
patent: 403179187 (1991-08-01), None
patent: 4081586 (1992-03-01), None

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