Title:
IMPROVED PASSIVE VIBRATION REDUCING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/153226
Kind Code:
A1
Abstract:
There is provided a vibration reducing apparatus (10) for a percussive tool (60) having an axis of reciprocation. The apparatus comprises, a guide frame (38,38a,38b) and at least one member (50) extending across the axis of reciprocation. An assembly (20) extending in a direction of along the axis of reciprocation comprises at least two layers (26,28,30,32) and each layer comprises four interconnected elongate members (27a,27b,29a,29b,31a,31b) pivotally attached and rotatable with respect to each other to define a polygon; and the assembly has at least one biasing means (24a,24b). A handle (40) is movably coupled to the guide frame and supported on the assembly. The apparatus provides decreasing stiffness with increasing compression of the assembly under an operator applied load to the handle for reducing vibration in a predetermined frequency range.
Inventors:
JING XINGJIAN (CN)
Application Number:
PCT/CN2018/074644
Publication Date:
August 30, 2018
Filing Date:
January 31, 2018
Export Citation:
Assignee:
THE HONGKONG POLYTECHNIC UNIV (CN)
International Classes:
E21B1/00
Foreign References:
| CN104264541A | 2015-01-07 | |||
| CN205078197U | 2016-03-09 | |||
| CN202100211U | 2012-01-04 | |||
| CN101906940A | 2010-12-08 | |||
| US7059423B1 | 2006-06-13 | |||
| JPH11179680A | 1999-07-06 |
Attorney, Agent or Firm:
SHANGHAI DANRONG & ZONGDE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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