Title:
TWO-STAGE OPENING TYPE DOOR LATCH DEVICE
Document Type and Number:
Japanese Patent JP3193907
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a safe lock device is which a door is not fully opened at once at opening the door, but a gap is formed first, and the door is fully opened by subsequent operation, so as operator is not burnt or hurt by high temperature air or steam, if any, inside the door due to quick opening of the door.
SOLUTION: On a fixed case 1, an outer latch bolt 3 and an inner latch bolt 4 are provided in parallel on the inner side and the outer side in a thickness direction of a door 40, and the latch bolts 3, 4 are separately and elastically provided on the fixed case 1 to be pushed out to specified positions on the tip side. Tip parts of the latch bolts 3, 4 are engaged in order with a single receiving hole 31 in a receiving seat plate 30. The two inner latch bolts 3, 4 are interlocked with a handle 45 to be removed from the receiving hole 31 in order.
Inventors:
Hirokazu Nozaki
Application Number:
JP11700599A
Publication Date:
July 30, 2001
Filing Date:
April 23, 1999
Export Citation:
Assignee:
Takigen Manufacturing Co., Ltd.
International Classes:
E05C1/16; E05B63/14; E05B65/00; E05B65/06; (IPC1-7): E05C1/16; E05B63/14; E05B65/00; E05B65/06
Domestic Patent References:
| JP10140906A | ||||
| JP50107595U | ||||
| JP61203976U | ||||
| JP4927560B1 |
Attorney, Agent or Firm:
Mamoru Masuda