Japan, March 5 -- ALINCO INC has got intellectual property rights for 'HATCH DEVICE IN SCAFFOLDING BOARD.' Other related details are as follows:
Application Number: JP,2021-197629
Category (FI): E04G5/08@U
Stage: PROBLEM TO BE SOLVED: To provide a hatch device allowing the opening of a scaffolding board freely opening/closing.SOLUTION: In a constitution in which an attitude keeping mechanism (16) keeping a lid body set in an open attitude (P2) by setting a pair of lateral link arms (20) in a fixed locked state (K) in a standing attitude (Q2), and a releasing mechanism (24) for releasing the lock and setting in a lock-released state (K) to thereby set the link arms (20) in a folded attitude (Q1) are provided, an arm linkage mechanism (27) is provided composed to keep the lock-released state (K) of the other link arm (20), even when one link arm (20) is set in the lock-released state directly with the fingertips, not by a regular usage of operating the releasing mechanism (24) by a worker.SELECTED DRAWING: Figure 4 (Grant)
Filing Date: Dec. 6, 2021
Publication Date: June 16, 2023
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
