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1. 发明专利

JPH11293913A CONNECTION METAL TOOL FOR VERTICAL POST, PIPE, OR THE LIKE OF SCAFFOLD 失效
公开(公告)号：JPH11293913A
公开(公告)日：1999-10-26
申请号：JP11016898
申请日：1998-04-06
申请人： CHUO BUILD INDUSTRY CO LTD , NAKAMURA KIJU
发明人： KONDO MICHIAKI , NAKAMURA KIJU
IPC分类号： E04G7/20
摘要： PROBLEM TO BE SOLVED: To simply and efficiently carry out works when connecting vertical posts or pipes for scaffolds to assemble upwardly them one by one or demolishing them and make visible the fixed conditions of the connection metal tools from the outside. SOLUTION: This connection metal tool 1 is constituted of a tubular connection member 5 having insertion parts 3, 4 at the upper and lower sides of an engaging part 2 formed at the central part, and a nearly L-shaped hook member 8 having a short part 6 at one end and a long part 7 at the other end. Through holes 11, 12 (12a, 12b) are bored at the opposite positions of the engaging part. The inside diameter of one 12 of the through holes is made smaller than the outside diameter, and the long part of the hook member is slidably inserted in the through hole, and a nonskid pipe 16 is fixed at the front side of the long part, and a circular projection 16a a little smaller than the outside diameter of one side through hole is formed at the tip of the nonskid pipe, and further, a spring member 20 always urging the hook member to the tubular connection member side is springingly equipped in the long part of the hook member positioned at the tubular connection member.

2. 发明专利

JPH11293908A DROPPING-OUT PREVENTION TOOL FOR JACK BASE, AND JACK BASE PROVIDED WITH IT 失效
公开(公告)号：JPH11293908A
公开(公告)日：1999-10-26
申请号：JP11429698
申请日：1998-04-09
申请人： CHUO BUILD INDUSTRY CO LTD
发明人： KONDO MICHIAKI
IPC分类号： E04G1/18 , E04G5/02 , E04G25/00
摘要： PROBLEM TO BE SOLVED: To fix a dropping-out prevention tool to a jack base and unfix it therefrom in a one touch motion to greatly improve the working efficiency and further to safely raise or lower a lower rod such as a leg column and finely adjust the height of the leg column or the like even after the dropping-out prevention tool for the jack base has been fixed. SOLUTION: This dropping-out prevention tool 1 for a jack base is fitted to the jack base 3 comprising a base plate 30 on which a male screw rod is erected and a rotary body 32 with a handle, screwed on a male screwed rod 31 to be vertically movable and provided with a circular groove 322 at the upper part of the handle 3, and the lower rod 2 such as a leg column which is fitted to the rotary body 32 of the jack base 3 from above and vertically moved in accordance with the vertical movement of the rotary body 32 and provided with a fitting hole facing a position corresponding to the circular groove 322 of the rotary body 32 with a handle. The dropping-out prevention tool is formed of a plate body opened to be freely widened or narrowed as an insertion opening 10 to the lower rod at one side thereof and oppositely provided with projections 13 fitting in the fitting holes of the lower rod and the circular groove of the rotary body with a handle, at the inside face of the plate body.

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