Laying structure for vacuum sewer pipe of vacuum sewage collecti

Details Laying structure for vacuum sewer pipe of vacuum sewage collecti Laying structure for vacuum sewer pipe of vacuum sewage collecti

1991-02-27

1992-01-28

Corbin, David H.

Hydraulic and earth engineering

Drainage or irrigation

1372361, 210170, 405 80, E03F 100

Patent

active

050838857

ABSTRACT:
A laying structure for a vacuum sewer pipe of a vacuum sewage collecting system for collecting sewage discharged from homes and facilities into a collecting tank through a vacuum sewer pipe kept negative in pressure internally is disclosed. The vacuum sewer pipe includes a portion laid in a plain topography which comprises a downward pitch portion sloped toward downstream, and a short upward pitch portion connected to the downstream end of the downward pitch portion to return a depth of the vacuum sewer pipe to an original level, the downward pitch portion and the upward pitch portion are alternated at least once. The upward pitch portion starts from a spot deepened from the original laying level by a depth corresponding to 0.8 to 1.0 times of a bore of the vacuum sewer pipe. By this arrangement, an air lock is not produced at the upward pitch portion even if the quantity of air flowing in the vacuum sewer pipe is low.

REFERENCES:
patent: 3730884 (1973-05-01), Burns et al.
patent: 4155851 (1979-05-01), Michael
patent: 4171853 (1979-10-01), Cleaver et al.
patent: 4179371 (1979-12-01), Foreman et al.
patent: 4333830 (1982-06-01), Michael
patent: 4373838 (1983-02-01), Foreman et al.
patent: 4892440 (1990-01-01), Regan

Affiliated with

Also associated with

Rating

Laying structure for vacuum sewer pipe of vacuum sewage collecti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laying structure for vacuum sewer pipe of vacuum sewage collecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laying structure for vacuum sewer pipe of vacuum sewage collecti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1856963