Fluid displacement apparatus having pressure sensing device

Details Fluid displacement apparatus having pressure sensing device Fluid displacement apparatus having pressure sensing device

2008-01-08

2010-02-02

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

With signal, indicator or transparent inspection means

C418S055100, C417S044200, C417S902000

Reexamination Certificate

active

07654804

ABSTRACT:
A fluid displacement apparatus includes a housing for receiving a refrigerant, a driving shaft rotatably received in the housing, a magnetic clutch attached to the driving shaft for rotation transmitting purposes, a fixed scroll disposed in the housing, an orbiting scroll rotatably received and engaged in the housing and interfitting with the fixed scroll for compressing the refrigerant and for generating a pressurized refrigerant, the housing includes a compartment communicating with the inner chamber of the housing with a passage for receiving a pressure sensing device which may sense the pressure of the pressurized refrigerant for detecting whether the refrigerant in the housing is over pressure or not.

REFERENCES:
patent: 4955795 (1990-09-01), Griffith
patent: 5200872 (1993-04-01), D'Entremont et al.
patent: 5511952 (1996-04-01), Sato
patent: 6497554 (2002-12-01), Yang et al.
patent: 7290989 (2007-11-01), Jayanth
patent: 2006/0275143 (2006-12-01), Jayanth
patent: 02104995 (1990-04-01), None

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