Title:
NAIL
Document Type and Number:
Japanese Patent JP2555263
Kind Code:
B2
Abstract:
PURPOSE: To provide a nail capable of obtaining resistance against strong pulling force even when it is applied to a substance having weak retaining force such plaster board or ALC (light-weight air-bubble included concrete board).
CONSTITUTION: One end 3a of a rod part 3 bent in the form of U letter is fixed to a flange part 2 while the other end 3c thereof is made to penetrate in a through-hole 2a of a flange part 2 so as to move freely so as to protrude by a specified length. Central portions 3b of the rod part 3 bent in the form of U shape and superposed are formed in a flat plate shape of which fore end is made thin. When such a constituted nail is driven in, the tip of the nail 1 spreads in a lateral direction after it is bent in the form of L letter. In pulling out the nail 1 the tip receives large force from ALC and ALC is hard to flow along the tip of flat plate shape, and thus resistance against large pulling force.
Inventors:
OOBA NOBORU
Application Number:
JP13323393A
Publication Date:
November 20, 1996
Filing Date:
June 03, 1993
Export Citation:
Assignee:
KOKUBU & CO LTD
International Classes:
F16B15/04; (IPC1-7): F16B15/04
Domestic Patent References:
| JP380116U | ||||
| JP189606U |
Other References:
【文献】米国特許2501701(US,A)
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)
Previous Patent: 乾式防火区画貫通配管施工材
Next Patent: CURRENT SENSOR FOR FORWARD AND BACKWARD CURRENT FLOW WIRE
Next Patent: CURRENT SENSOR FOR FORWARD AND BACKWARD CURRENT FLOW WIRE