Underground water pumping device

Details Underground water pumping device Underground water pumping device

2006-05-02

2006-05-02

Bagnell, David (Department: 3672)

Wells

With below and above ground modification

Eduction pump or plunger in well

C166S242800, C166S236000, C166S370000

Reexamination Certificate

active

07036577

ABSTRACT:
A groundwater pumping apparatus includes an outer tube, an inner tube, a shield member, a vacuum unit and a pump unit. The outer tube is buried in ground, and has a water-passing portion at its lower part. The inner tube has a substantially same length as the outer tube, and is placed in the outer tube such that the inner tube is spaced from the outer tube. The inner tube has a groundwater inlet at its bottom end, which is provided at a position lower than a top end of the water-passing portion. The shield member shields top ends of the outer tube and the inner tube. The vacuum unit reduces a pressure in the inner tube. The pump unit pumps groundwater that comes in the inner tube through the groundwater inlet.

REFERENCES:
patent: 2833222 (1958-05-01), Hansen
patent: RE33102 (1989-10-01), Visser et al.
patent: 5271467 (1993-12-01), Lynch
patent: 6305473 (2001-10-01), Peramaki
patent: 775535 (1997-05-01), None
patent: 125539/1986 (1986-08-01), None
patent: 5-156624 (1993-06-01), None
patent: 7-197441 (1995-08-01), None
patent: 07284753 (1995-10-01), None
patent: 8-13463 (1996-01-01), None
patent: 9-279974 (1997-10-01), None
patent: 2000-27170 (2000-01-01), None
patent: WO 9508043 (1995-03-01), None
patent: WO 9820232 (1998-05-01), None

Affiliated with

Also associated with

Rating

Underground water pumping device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3596325