The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 2000
Filed:
Jul. 21, 1998
Noriatsu Kojima, Nagoya, JP;
Abstract
The invention relates to a drainage collective pipe joint where wastewater flowing in a collective housing of multiple floors is subjected to swirl flow and is allowed to flow down. The drainage collective pipe joint comprises an upper vertical pipe connection port to connect an upper vertical pipe, a main body part having a taper pipe part formed in downward taper shape at lower side and installed at lower side of the upper vertical pipe connection port, a lower vertical pipe connection port installed at lower side of the main body part and capable of connecting a lower vertical pipe, at least one horizontal branch pipe connection port installed at the main body part and connected a horizontal branch pipe, and a plurality of drainage flow control guides projected from an inner circumferential wall at lower side of the horizontal branch pipe connection port of the main body part and capable of controlling the drainage flow. The plurality of drainage flow control guides comprise at least one upper drainage control guide installed at upper side in the pipe direction and at least one lower drainage flow control guide installed at lower side in the pipe axial direction. According to the drainage collective pipe joint, the flowing-in wastewater is prevented from flowing reversely into the horizontal branch pipe and the wastewater is reduced in flow rate and swirled and the fluctuation of the air pressure in the drainage system can be suppressed.