Title:
POLE STRUCTURE
Document Type and Number:
Japanese Patent JP3923888
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a pole structure equipped with a vibration reducing means easily mountable with simple structure.
SOLUTION: A spring member 13 of a dynamic vibration absorber 11 is formed of a spring member with high damping capacity. A weight 14 is mounted to one end part of the spring member 13, and a support member 16 for mounting to a pole body 12 is mounted to the other end part of the spring member 13. The natural frequency adjustment of the dynamic vibration absorber 11 is made by adjusting the mounting position of the weight 14 by an adjusting tool 15 or selecting the mass of the weight 14. Furthermore, each plane direction can have different natural frequency by changing the cross-sectional shape of the spring member 13, and synchronization to a plurality of vibration modes can be attained by a single dynamic vibration absorber 11.
Inventors:
Warashina Masahiko
Hiroshi Katayama
Hiroshi Katayama
Application Number:
JP2002358897A
Publication Date:
June 06, 2007
Filing Date:
December 11, 2002
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
E04H9/14; E01F9/615; E01F9/623; E01F9/658; E01F9/696; E04H12/00; F16F15/02; (IPC1-7): E04H9/14; E01F9/011; E04H12/00; F16F15/02
Domestic Patent References:
| JP4151042A | ||||
| JP2002129775A | ||||
| JP62042654U | ||||
| JP62049038U |
Attorney, Agent or Firm:
Mitani Megumi
Previous Patent: SUPERVISORY SIGNALING FOR OPTICAL COMMUNICATION APPARATUS
Next Patent: SURFACE MOUNTED SPRING CONNECTOR AND ITS MANUFACTURING METHOD
Next Patent: SURFACE MOUNTED SPRING CONNECTOR AND ITS MANUFACTURING METHOD