Title:
AUTOMATIC LOCK TYPE NAVIGATION GATE
Document Type and Number:
Japanese Patent JP3757201
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a simple and inexpensive navigation gate with improved safety and convenience for a worker by being unlocked only by the propulsion of a ship.
SOLUTION: An inclinable lock pin 5 extended to a mating door body 3 to be engaged with and disengaged from a groove 3c of the door body 3 is mounted on one of two door bodies 3, 3 rotatable around a shaft. A press-up pin 5a as a press-up member, engaged with the lock pin 5 is vertically movably mounted just under the groove 3c. Slide arms 6 are longitudinally mounted on two door bodies 3, 3 slidably to each door body 3, 3. Ship protective members 7, 7 are mounted on front and rear ends of the slide arm 8. Further the slide arm 6 is provided with a buoy plate 8, and a compression spring 8a is mounted on the buoy plate 8. A V-shaped inclined face 8b is formed on an upper edge part of the buoy plate 8, and a lower end of the press-up pin 5a is engaged with the inclined face 8b.
Inventors:
Aomori Akiho
Yasushi Yamanaka
Akihisa Sato
Koji Hattori
Ihara Nyoko
Yasushi Yamanaka
Akihisa Sato
Koji Hattori
Ihara Nyoko
Application Number:
JP2002322579A
Publication Date:
March 22, 2006
Filing Date:
November 06, 2002
Export Citation:
Assignee:
Zenya Marine Service Co., Ltd.
International Classes:
E02B7/40; E02C1/00; E05B65/00; (IPC1-7): E02C1/00; E02B7/40; E05B65/00
Domestic Patent References:
| JP2002129540A | ||||
| JP2001073347A |
Attorney, Agent or Firm:
Kunihiko Fujita
Susumu Fukuda
Susumu Fukuda