JPS6012000U

JPS6012000U - multiple ladder

Info

Publication number: JPS6012000U
Application number: JP10425983U
Authority: JP
Inventors: 秀雄木村
Original assignee: 株式会社日本アルミ; 日本アルミツルマル株式会社
Priority date: 1983-07-04
Filing date: 1983-07-04
Publication date: 1985-01-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面はこの考案の一実施例を示すもので、第１図は正面
図、第２図は第１図の側面図、第３図と第４図は側面図
、第５図は１部の拡大側面図である。１・・・・・・下はしご、２・・・・・・中はしご、３
・・・・・・第１０−プ、３Ａ・・・・・・他端、４・
・・・・・上はしご、５・・・・・・第２０−プ、１・
・・・・・踏桟、７．　８．　１０・・・・・・滑車、
９．１１．１２・・・・・・固定ピン、１３・・・・・
・掛は止め片、１７・・・・・・逃がし片。第１図　　　　　　　第２図第３図　　　　第４図The drawings show one embodiment of this invention; Fig. 1 is a front view, Fig. 2 is a side view of Fig. 1, Figs. 3 and 4 are side views, and Fig. 5 is a partially enlarged view. FIG. 1...Lower ladder, 2...Middle ladder, 3
・・・・・・10th-P, 3A・・・・・・Other end, 4・
...Upper ladder, 5...20th step, 1.
...Treading pier, 7. 8. 10...pulley,
9.11.12...Fixing pin, 13...
・The hook is a stop piece, 17...Escape piece. Figure 1 Figure 2 Figure 3 Figure 4

Claims

[Scope of utility model registration request]

A 10th ladder with an inner ladder hung through the lower ladder and whose other end is open for operation, and a 20th rope with the above inner ladder and upper ladder hung through the middle ladder, and extend and retract in a sliding manner. 1. A multiple ladder, characterized in that the upper ladder is moved up and down by the 20th step as the middle ladder is moved up and down by the 10th step.