Title:
支持棹および作業機
Document Type and Number:
Japanese Patent JP7219686
Kind Code:
B2
Abstract:
To disclose a technology that can suppress vibration of a pipe with rotation of a shaft.SOLUTION: A support rod may include a pipe, a shaft and a first mobile. The pipe may be longitudinally stretchable. The shaft may extend in the longitudinal direction in the inside of the pipe. The first mobile may move in the longitudinal direction with respect to the pipe when the pipe stretches. The pipe may include an outer pipe and an inner pipe. The outer pipe may store the first mobile inside. The inner pipe is inserted in the outer pipe, and the inner pipe may be movable in the longitudinal direction with respect to the outer pipe. The first mobile may include at least two first bearings for rotatably supporting the shaft. The spacing in the longitudinal direction of at least two adjacent first bearings may always be smaller than each of the first spring and the second spring in the longitudinal direction.SELECTED DRAWING: Figure 4
Inventors:
Takuma Niiyama
Application Number:
JP2019166614A
Publication Date:
February 08, 2023
Filing Date:
September 12, 2019
Export Citation:
Assignee:
Makita Corporation
International Classes:
A01D34/76
Domestic Patent References:
| JP2016019477A | ||||
| JP2011200144A | ||||
| JP2013005729A | ||||
| JP63134625U |
Foreign References:
| US20160249534 |
Attorney, Agent or Firm:
Patent Attorney Corporation Kaiyu International Patent Office
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