Title:
【考案の名称】流路接続装置
Document Type and Number:
Japanese Patent JP2511932
Kind Code:
Y2
Abstract:
A coupling device includes a first coupling section having a large bore, a small bore, and a valve seat between the large and small bores; a second coupling section having a second bore opening at a contact surface which is opposed to the first coupling section; a valve having a valve head normally resting on the valve seat and a tubular body snugly fitted in the small bore and having an axial opening with a mouth at an end and a plurality of radial openings at the other end; a drain passage provided along the small bore and having an end opening at a bottom of the large bore and the other end opening at a lower side of the first coupling section; and a drain valve provided in the drain passage and having a cylindrical hole intersecting the drain passage and a piston snugly fitted in the cylindrical hole and having a circumferential channel for opening the drain passage and a land portion for closing the drain passage.
Inventors:
Noboru Otsuki
Toshihiko Onishi
Katsumi Tomioka
Tsunezo Miura
Toshihiko Onishi
Katsumi Tomioka
Tsunezo Miura
Application Number:
JP2256290U
Publication Date:
September 25, 1996
Filing Date:
March 06, 1990
Export Citation:
Assignee:
Nabco Co., Ltd.
Hirotec Co., Ltd.
Hirotec Co., Ltd.
International Classes:
F16L39/04; F16L37/38; F16L37/42; F16L39/00; (IPC1-7): F16L37/38; F16L39/00
Domestic Patent References:
| JP6319403A | ||||
| JP1143492U | ||||
| JP4315958B1 | ||||
| JP533747B2 |
Attorney, Agent or Firm:
Mitsuhiko Watanabe