Vacuum pump

Details Vacuum pump Vacuum pump

2007-01-09

2007-01-09

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural rigidly related blade sets

C415S116000, C415S111000, C415S229000

Reexamination Certificate

active

10919447

ABSTRACT:
A vacuum pump of the invention comprises, in a common pump body (100): molecular drag pump stages (5) in series with regenerative pump stages (9). The molecular drag pump stages (5) comprise a molecular drag rotor (5a) including a blind axial cavity (5c) open towards the downstream end, and the motor (7) is housed at least in part in said blind axial cavity (5c). The drive shaft (8) is coupled via its upstream end (8a) to the molecular drag rotor (5a), and it is coupled via its downstream portion (8b) to the regenerative rotor (9a). The motor (7) is secured to the central segment of the drive shaft (8). This provides a universal pump of small size, enabling pumping to be performed from 1000 mbar down to 10−8mbar, and suitable for being placed in the vicinity of a vacuum chamber.

REFERENCES:
patent: 6135709 (2000-10-01), Stones
patent: 6606536 (2003-08-01), Aso
patent: 6672827 (2004-01-01), Yamashita et al.
patent: 6779969 (2004-08-01), Nonaka et al.
patent: 0 959 253 (1999-11-01), None
patent: 1 201 929 (2002-05-01), None
patent: 1 318 309 (2003-06-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3769986