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Patent Searching and Data


Title:
HOISTING MACHINE AND ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2022/168298
Kind Code:
A1
Abstract:
The present invention comprises: an air discharge hole that is provided in a casing and that allows discharge of air from the side of the casing where a stator is provided to the opposite side of the casing; and a projecting rib provided to the inner surface of a rotating body so as to protrude toward the casing, the rib being provided so as to extend radially with respect to the central axis of a main shaft. The rotating body is also provided with an air suction hole through which air is suctioned from the outer-surface side of the rotating body to the inner-surface side thereof, the air suction hole being provided at a position such that the distance from the central axis of the main shaft to the air suction hole is less than the distance from the central axis of the main shaft to the air discharge hole.

Inventors:
NAKAYAMA MASATO (JP)
HINO YUTO (JP)
MARUYAMA OSAMU (JP)
Application Number:
PCT/JP2021/004543
Publication Date:
August 11, 2022
Filing Date:
February 08, 2021
Export Citation:
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Assignee:
HITACHI LTD (JP)
International Classes:
B66B11/04; B66B11/08
Domestic Patent References:
WO2020053968A12020-03-19
Foreign References:
JP2006081305A2006-03-23
JP2016105668A2016-06-09
JP2007330076A2007-12-20
JP2001258210A2001-09-21
JP2015229587A2015-12-21
JP2013009461A2013-01-10
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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