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公开(公告)号:US4096952A
公开(公告)日:1978-06-27
申请号:US752869
申请日:1976-12-21
Applicant: Richard E. Diggs
Inventor: Richard E. Diggs
CPC classification number: B66C23/201
Abstract: A jib crane having an adjustable height. The crane comprises a sectional mast which can be lengthened or shortened. The mast has a ceiling connecting element which can accommodate sloping ceilings, and a floor mounting element which is quickly and easily installed. A height adjuster connects the mast sections together.
Abstract translation: 具有可调节高度的起重臂起重机。 起重机包括可以延长或缩短的分段桅杆。 桅杆具有可容纳倾斜天花板的天花板连接元件和快速且容易地安装的地板安装元件。 高度调节器将桅杆部分连接在一起。
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公开(公告)号:US2335522A
公开(公告)日:1943-11-30
申请号:US47654243
申请日:1943-02-20
Applicant: LETOURNEAU INC
Inventor: LE TOURNEAU ROBERT G
IPC: B66C23/20
CPC classification number: B66C23/201
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