Title:
BLOWING DEVICE OF WALL SURFACE RELEASE DIAGNOSIS MACHINE
Document Type and Number:
Japanese Patent JP3739896
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a blowing sound for accurately judging the release of a wall surface due to a frequency analysis after the wall surface is blown and then a hammer immediately leaves the wall surface.
SOLUTION: A roller 311 of a rod 31 is pushed up while it rotates on the outer periphery surface in involute surface shape of a cam 335 that rotates in the direction of an arrow R, thus causing the rod 31 to retreat. Also, a hammer 35 is allowed to retreat along with the rod 31 via a coil spring 36 for recovery. When the rod 31 reaches a stroke rear end position, the roller 311 deviates from a maximum diameter part 335a of the cam 335 and the rod 31 and the hammer 35 speedily advance due to the extension of a coil spring 34 for blowing being compressed. The hammer 35 advances due to inertia even after the rod 31 stops and blows a wall surface W to be diagnosed. The hammer 35 leaves the wall surface W to be diagnosed due to the pull biasing force of the coil spring 36 for recovery immediately after blowing.
Inventors:
Naoshi Oi
Sawada Keio
Ryuji Yoshida
Chichibu Akemi
Shigenori Wataya
Yoshiro Hattori
Yusuke Suzuki
Sawada Keio
Ryuji Yoshida
Chichibu Akemi
Shigenori Wataya
Yoshiro Hattori
Yusuke Suzuki
Application Number:
JP17914197A
Publication Date:
January 25, 2006
Filing Date:
June 20, 1997
Export Citation:
Assignee:
Fujita Co., Ltd.
Renotek Co., Ltd.
Showa Electric Laboratory Co., Ltd.
Renotek Co., Ltd.
Showa Electric Laboratory Co., Ltd.
International Classes:
G01N29/12; (IPC1-7): G01N29/12
Domestic Patent References:
| JP3029124U | ||||
| JP60212569A | ||||
| JP64080858A |
Attorney, Agent or Firm:
Yoichi Nomoto
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