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Title:
ROTATION ASSIST TOOL AND ASSIST-ATTACHED ROTATION TOOL
Document Type and Number:
WIPO Patent Application WO/2021/079949
Kind Code:
A1
Abstract:
Provided are: a rotation assist tool 10 attached to a base side of a rotary shaft 12 having an output unit 11 on the front side thereof; and an assist-attached rotation tool 31 including the rotation assist tool 10. The rotation assist tool 10 has: a first rotating body 13; a second rotating body 14 that is held by the first rotating body 13 to be rotatable forward and rearward; and an elastically deformable body 22 that is elastically deformed as the first rotating body 13 and the second rotating body 14 rotate relative to each other, and transmits rotation between the first rotating body 13 and the second rotating body 14, wherein the base side of the rotary shaft 12 is fixed to the first rotating body 13.

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Inventors:
HAMAMOTO YOICHIRO (JP)
Application Number:
PCT/JP2020/039779
Publication Date:
April 29, 2021
Filing Date:
October 22, 2020
Export Citation:
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Assignee:
FREEPOWER INNOVATIONS CO LTD (JP)
International Classes:
B25B21/00; F16D1/00; F16D1/06; F16D3/12
Foreign References:
JP2014145437A2014-08-14
JPS4911138U1974-01-30
JP2019094967A2019-06-20
JPH11170880A1999-06-29
US2270140A1942-01-13
JPH0446221A1992-02-17
JPS5473596U1979-05-25
Other References:
See also references of EP 4049792A4
Attorney, Agent or Firm:
NAKAMAE Fujio (JP)
Download PDF:
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