To provide an elbow joint for remarkably improving settlement of the elbow joint, by miniaturizing an opening part formed on a bottom surface, by using this elbow joint, while largely reducing even flow rate resistance, by solving the problem of clogging, by daringly expanding a diameter in a part feared for the clogging.
In this elbow joint when bending a horizontally laying pipe arranged on a floor surface at a substantially right angle, the elbow joint is constituted so that an internal-external shape inside of an elbow of the joint, is bent at a right angle along the opening part, and the internal shape outside of the elbow is formed as a circular curved surface of 1/4, and holds the cross-sectional area larger than the cross-sectional area of the horizontally laying pipe, and has the elbow joint A, an elbow part 3, the circular curved surface 3a, a floor 4, the opening part 5, the internal-external shape (a right angle) 6 inside of the elbow part 3, the horizontally laying pipe 11, and a metal fitting 12.
HOSODA YUKIHIRO
| JP2002018188A | 2002-01-22 | |||
| JPS54122111U | 1979-08-27 | |||
| JPH0318396A | 1991-01-25 | |||
| JP2003129541A | 2003-05-08 | |||
| JPH08253959A | 1996-10-01 |
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda