Flowing-down rainwater flow-separating pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 28, 1997
Grant Date -
N/A
app pub date -
Apr 11, 1996
filing date -
Jul 26, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An upper end of an outer pipe 16 is connected to a gutter, and a lower end of the outer pipe is connected to a water collecting box communicating with a sewer pipe. An inner pipe 18 which is arranged apart from an inner circumferential surface of a vertical portion 16d of the outer pipe at an outer circumferential edge of an upper portion thereof is connected to a storage-percolating box at a lower end thereof. A ring-like flow-separating piece 24 is disposed on an inner circumferential surface of the vertical portion of the outer pipe above an outer end of the inner pipe by a predetermined distance. The flow-separating piece comprises a ring-like concave groove 24a for receiving rainwater flowing down along the inner circumferential surface of the vertical portion of the outer pipe, a plurality of through holes 24b formed on a bottom portion of the concave groove so as to be juxtaposed in a circumferential direction for guiding the rainwater received in the concave groove to the water collecting box, and an inner circumferential wall 24c formed in such a taper as that an inner diameter thereof decreases toward the lower end for guiding the rainwater overflowing from the concave groove to the inner pipe.
First Claim
Other Claims data not available