To provide a connection pipe connectable to a suction port and a return port of a water feeding device by keeping a pitch allowing a suction pipe and a return pipe to be inserted into a well reasonably even if sizes of pitch of the suction port and the return port of the water feeding device do not correspond to bore of a well.
This connection pipe 30 is attached to the suction port and the return port of the water feeding device for the well and is used to connect the suction pipe and the return pipe for inserting into the well with the suction port and the return port. This connection pipe is formed into an integral cylindrical shape having a pair of connection holes 31, 32. In a part of its basic part 33a, pitch a of arrangement of the connection holes 31, 32 is same as pitch of arrangement of the suction port and the return port of the water feeding device. In a part of an insertion part on its opposite side, pitch b of arrangement of the connection holes 31, 32 is smaller than pitch of arrangement of the suction port and the return port of the water feeding device.
ABE MASAYUKI
IHARA KENJI
| JPS54156807U | 1979-10-31 | |||
| JPS5125808A | 1976-03-03 | |||
| JPS5187705U | 1976-07-14 | |||
| JPS5560500U | 1980-04-24 | |||
| JPH0667900U | 1994-09-22 | |||
| JPS5038807A | 1975-04-10 | |||
| JPS5150006A | 1976-05-01 | |||
| JPS6341558A | 1988-02-22 | |||
| JPS62135888U | 1987-08-26 |
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
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