Title:
【発明の名称】移動可能折りたたみ式合唱用ライザー
Document Type and Number:
Japanese Patent JPH03500069
Kind Code:
A
Abstract:
A mobile folding choral riser includes a foldable frame (10) having means for receiving a number of removable riser steps (50,60,70) at progressively higher locations on the frame. Locking means are provided for releasably securing the steps to the framework. A guardrail (20) is provided along the back of the riser, and is pivotable to permit overlapping with the guardrails of other riser sections when a riser in forward configuration (widest step at the back) is placed adjacent a riser section in reverse configuration (narrowest step at the back). Interlocks are provided for securing adjacent riser sections together, regardless of whether individual sections are in forward or reverse configuration.
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Inventors:
Wilson, Kermit H
Bots, Rollin' Day
Bots, Rollin' Day
Application Number:
JP50673488A
Publication Date:
January 10, 1991
Filing Date:
July 27, 1988
Export Citation:
Assignee:
Psycho Incorporated
International Classes:
A47C1/12; A63J5/00; A63J5/12; A63J99/00; B66B23/00; E04H3/12; E06C1/39; (IPC1-7): A47C1/12; E04H3/12; E06C1/39
Attorney, Agent or Firm:
Kunihiko Ohashi (1 outside)
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