Vacuum exhausting apparatus

Details Vacuum exhausting apparatus Vacuum exhausting apparatus

2006-05-30

2006-05-30

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Like rotary members

C418S046000, C418S206100

Reexamination Certificate

active

07052259

ABSTRACT:
In a screw type vacuum pump which includes a housing provided with a rotor chamber, a pair of screw rotors in mesh with each other rotably provided in the rotor chamber, a transfer chamber of gas formed between an inner wall of the housing and flutes of the aforesaid pair of screw rotors, and a suction port and an exhaust port communicated to the transfer chamber, the gas being sucked from the suction port into the transfer chamber and exhausted from the exhaust port, by providing the aforesaid exhaust port in a side face of the housing, it is possible to form a larger exhaust port, and a time until the port is blocked with deposits can be prolonged.

REFERENCES:
patent: 1191423 (1916-07-01), Holdaway
patent: 1635271 (1927-07-01), Hapgood
patent: 1821523 (1931-09-01), Montelius
patent: 2463080 (1949-03-01), Beier
patent: 2705922 (1955-04-01), Rathman
patent: 3289600 (1966-12-01), Whitfield
patent: 4488858 (1984-12-01), Glanvall
patent: 4923374 (1990-05-01), Lundin et al.
patent: 4943215 (1990-07-01), Berges
patent: 5655782 (1997-08-01), Takabe et al.
patent: 6371744 (2002-04-01), Mito et al.
patent: 6589034 (2003-07-01), Vorwerk et al.
patent: 6769890 (2004-08-01), Vigano' et al.
patent: 6884050 (2005-04-01), Prior
patent: 0 828 079 (1998-03-01), None
patent: 7-12071 (1995-01-01), None
patent: 7-217563 (1995-08-01), None
patent: WO 99/49220 (1999-09-01), None
patent: WO 99/54627 (1999-10-01), None

Affiliated with

Also associated with

Rating

Vacuum exhausting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum exhausting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum exhausting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3529054