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Patent Searching and Data


Title:
DOOR LOCK
Document Type and Number:
Japanese Patent JP3294219
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve operability, and to simplify a structure.
SOLUTION: This door lock is provided with doorknobs 5, 8 provided on the outside and inside of a door, respectively and for opening and closing the door, and a lock mechanism for obstructing the door-opening operation of the outside doorknob 8 by interlocking with the operation of the inside doorknob 5. The door-opening operation of the outside and inside doorknobs 5, 8 are set to a rotation in a fixed direction, and only the inside doorknob 5 can be turned in a reverse direction to the door opening operation. The lock mechanism is lockingly operated by the rotation in the reverse direction to the door opening operation of the inside doorknob 5.


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Inventors:
Ito, Tomoyoshi
Sakurai, Masahisa
Mamiya, Isamu
Application Number:
JP1999000175788
Publication Date:
June 24, 2002
Filing Date:
June 22, 1999
Export Citation:
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Assignee:
ATOM LIVIN TECH CO LTD
SAKURAI KINZOKU KOGYO KK
International Classes:
E05B1/00; E05B55/14; E05B55/16; E05B65/06; (IPC1-7): E05B55/16; E05B65/06
Attorney, Agent or Firm:
吉田 芳春