Title:
ASCENT/DESCENT DOOR, BOX BODY, AND LOCAL EXHAUST DEVICE
Document Type and Number:
Japanese Patent JP2019042687
Kind Code:
A
Abstract:
To provide an ascent/descent door that enables a smooth and accurate lifting/lowering operation by making weight adjustment work more efficient, a box body, and a local exhaust device.SOLUTION: An ascent/descent door 13, which is looped over a wire rod support member and connected to a second end of a suspended wire rod having a main weight connected to a first end, is constituted to be capable of being lifted/lowered in a sliding manner by traveling of the suspended wire rod along the wire rod support member. The ascent/descent door comprises a door body 81, and a weight adjustment mechanism 83 that is provided in the door body 81 and that can adjust the weight of the ascent/descent door 13 itself.SELECTED DRAWING: Figure 5
Inventors:
YOSHIDA RYUSUKE
TOMOE DAISUKE
SAKAGAMI SHIN
TOMOE DAISUKE
SAKAGAMI SHIN
Application Number:
JP2017169747A
Publication Date:
March 22, 2019
Filing Date:
September 04, 2017
Export Citation:
Assignee:
OKAMURA KK
International Classes:
B01L1/00; F24F7/06
Domestic Patent References:
| JP2009291750A | 2009-12-17 | |||
| JPH0296635A | 1990-04-09 | |||
| JPH09105268A | 1997-04-22 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Suzuki Mitsuyoshi
Suzuki Mitsuyoshi