Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Reexamination Certificate
2005-07-05
2005-07-05
Lopez, F. Daniel (Department: 3745)
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
Reexamination Certificate
active
06912946
ABSTRACT:
The present invention includes a system for providing an improved controlled airflow within a vacuum booster system. The system includes a vacuum booster assembly having a primary chamber and a secondary chamber, and an outer tube having a first end and a second end, the first end in communication with the secondary chamber of the vacuum booster assembly. The system additionally includes an airflow control assembly operably coupled to the second end of the outer tube, and an inner tube, concentric to the outer tube, having a first end and a second end, the first end operably coupled to the airflow control assembly, the second end in communication with the primary chamber of the vacuum booster assembly. In the system, air flows from the primary chamber of the vacuum booster assembly to the airflow control assembly within the inner tube and air flows from the airflow control assembly to the secondary chamber of the vacuum booster assembly within the outer tube.
REFERENCES:
patent: 5181769 (1993-01-01), Schiel et al.
patent: 5890775 (1999-04-01), Tsubouchi et al.
Dreischarf Derek T.
Elking Ryan M.
Fulks Gary C.
Haerr Timothy A.
MacLellan Patrick T.
Delphi Technologies Inc.
Lopez F. Daniel
Smith Michael D.
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