Title:
LABOR SAVING ERECTING AND FALLING METHOD OF STAGE
Document Type and Number:
Japanese Patent JPH01141686
Kind Code:
A
Abstract:
PURPOSE: To obtain a maintenace-free stage and enable raising or downing of the stage with a simple manipulation even by women or aged persons by supporting the raised state of the stage by a part of stay-dampers and receiving the stage load in sequence for the first time by the other stay-dampers at positions corresponding to the brought-down angle of the stage to actuate it. CONSTITUTION: A stage K is supported by the action of ten staydampers S at the A-position, in the raised state of the stage K. When the stage K is pulled to this side in this state, the load of the stage K gets over the supporting force of the ten stay-dampers S and the stage K is brought down and rotated while shrinking the rods Sa of the ten stay-dampes S. At the bringing-down and rotating time, respective stay-dampers S are eccentrically rotated against the support shaft 2 of the stage K, since the stay-dampers S are positioned in the inside of the shaft 2 and rotated around a pin 4 as the supporting point positioned at the lower side. Accordingly, when the stage K is rotated by 20 degrees to the B-position, the pin is transferred to the long hole end of the connection piece 6 by the eccentric rotation of the stay-dampers S. And hence, four stay- dampers S connected to the connection piece 6 are loaded with the stage K for the first time.
Inventors:
HARUTA HIROTAKA
Application Number:
JP30108787A
Publication Date:
June 02, 1989
Filing Date:
November 27, 1987
Export Citation:
Assignee:
HARUTA HIROTAKA
International Classes:
A63J1/00; E04H3/24; (IPC1-7): A63J1/00; E04H3/24
Attorney, Agent or Firm:
Hidetoshi Matsushima