초록 ▼

A coupling structure for a split boom power tool is provided. The structure permits any of a variety of lower tubular boom members with their working tools to be quickly and easily coupled to or uncoupled from an upper tubular boom member having a power source. The structure includes compatibly size

A coupling structure for a split boom power tool is provided. The structure permits any of a variety of lower tubular boom members with their working tools to be quickly and easily coupled to or uncoupled from an upper tubular boom member having a power source. The structure includes compatibly sized end portions on the upper and lower boom members that allow them to be quickly and easily telescopically joined and also provide a strengthened joint. A clamping member is provided with a locating tab that is receivable in a locating hole in the tube of the upper boom member to allow the clamp to be quickly and positively positioned at the joint. A plurality of tool orienting openings are provided in the end portion of the upper boom member and clamp to receive a spring loaded locking pin carried in the lower boom member to position the tool at a desired angular working orientation. The locating tab further serves to align the tool orienting openings in the clamp and upper boom member as the clamp is positioned on the upper boom member.

대표청구항 ▼

1. A split boom power tool coupling structure for a split boom power tool having a first upper tubular boom member having first and second end portions, one end portion being operably coupled to a power source that drivingly rotates an upper flex shaft that extends from the power source and to the s

1. A split boom power tool coupling structure for a split boom power tool having a first upper tubular boom member having first and second end portions, one end portion being operably coupled to a power source that drivingly rotates an upper flex shaft that extends from the power source and to the second end portion of the first boom, and a second lower tubular boom member having first and second end portions, one end portion being operably coupled to a rotatable work device that is drivingly coupled to a lower flex shaft that extends from the work device and to the second end portion of the second boom member, the coupling structure being adapted for releasably joining the second end portions of the first and second boom members together, the coupling structure comprising:a cross sectional configuration provided on a first one of the second end portions that is slightly larger than the cross sectional configuration provided on a second one of the second end portions to allow the second end portions to be telescopingly joined together, the first one of the second end portions comprising a slot that permits the first one of the second end portions to be slightly compressed; a tubular clamping member comprising: a C-shaped sleeve portion with a cross-sectional configuration greater than the cross-sectional configuration of the one second end portion, said sleeve having first and second edges, first and second radially extending flanges joined respectively to the first and second edges and movable between closer and spaced apart positions; a locating tab extending radially inwardly from the sleeve portion that is removably receivable in a locating opening provided in the first one of the second end portions, and a tightening member coupled with the first and second flanges and effective to move them between their first and second positions.