초록 ▼

The invention is a bi-directional cleanout for pipelines such as sewer pipelines and a bi-directional cleanout with a built in backflow preventer. The backflow preventer is a check valve which allows fluid to flow in one direction, but not in the other direction. The bi-directional cleanout is a dev

The invention is a bi-directional cleanout for pipelines such as sewer pipelines and a bi-directional cleanout with a built in backflow preventer. The backflow preventer is a check valve which allows fluid to flow in one direction, but not in the other direction. The bi-directional cleanout is a device which has a single access point at ground level, is located outside a house typically, and which directs a cleanout tool down one of two tool guide tubes. The guide tubes direct the cleanout tool into one of two tool guides which deflect the cleanout tool and cause it to enter the pipeline to be cleaned in a direction towards one or the other of the ends. The check valve is insertable into the pipe level unit in which the tool guides are located. While the pipeline is being cleaned out with the cleanout tool, the check valve can be removed and reinserted after the cleanout procedure is completed.

대표청구항 ▼

[I claim:] [13.]a ground level unit with a top and a bottom side, which is comprised of an access opening on said top side, and which includes a first and second guide tube selector, and a check valve access tube connector, in which a clean-out tool may be inserted into either said first or said sec

[I claim:] [13.]a ground level unit with a top and a bottom side, which is comprised of an access opening on said top side, and which includes a first and second guide tube selector, and a check valve access tube connector, in which a clean-out tool may be inserted into either said first or said second guide tube selector, and if inserted in said first guide tube selector is directed toward the first end of said pipeline, and if inserted in said second guide tube selector is directed toward the second end of the pipeline, and which also includes a check valve access tube connection through which a check valve may be removed or installed;a pair of guide tubes which have a first end and a second end, and which connect to said guide tube selectors at said first ends, and which connect at said second end to said tool guides of said pipe level unit;a check valve access tube with a first end a second end, which connects at said first end to said check valve access tube connection, and at second end with a check valve access tube receiver of a pipe level unit, and which includes check valve guide means, for insertion of said check valve into a working position in said pipe level unit, or for removal of said check valve through said check valve access tube,said pipe level unit comprising a clean out pipe section with a first direction tool guide and a second direction tool guide, each of which connects with said second ends of said guide tubes, and which guides a cleanout tool in a selected direction in said pipe, a check valve seat, for interfitting relationship with said check valve in a working position, and said check valve access tube connection, for connecting to said check valve access tube;said check valve interfiting in a working position in said pipe level unit, which admits fluid flow from one direction, but which blocks fluid flow from an opposite direction, and which is attached to a check valve rod, and which interacts with said check valve guide means, said check valve rod having with a first end and a second end, which attaches at said first end with said check valve, with said second end accessible for permitting insertion and or removal of said check valve, and which extends or retracts said check valve from said ground level unit to a working position in a pipe level unit; whereinsaid tool guides direct a cleanout tool along intersecting paths in said pipeline, so that all areas of the pipeline are traversed by said cleanout tool.