摘要:
A multi-purpose tool (10) is used as an air blower capable of delivering a high-velocity stream of air when in a blower mode of operation and as a rotating string trimmer capable of trimming vegetation when in a trimmer mode of operation. The tool has a blower housing (18) including an enclosed chamber (30), a plurality of vents (35) leading to the chamber, and a blower nozzle (32) for directing air from the chamber, wherein the impeller (20) is rotatably mounted in the chamber such that the housing defines an air pathway between the vents and the impeller. The multi-purpose tool also includes means (82) for blocking the flow of air between vents and the impeller when in the trimmer mode of operation and means (99, 124) for disengaging the trimmer head (22) from the internal drive shaft (26) when in the blower mode.
摘要:
A combination blower assembly and string trimmer whereby the string trimmer head is easily detachable without the use of any tools. The device includes a blower assembly that further includes an upper and lower housing mated together to form a volute-shaped cavity where an impeller with airfoil-shaped blades reside. The detachable string trimmer head is located under the lower housing of the blower assembly and is easily attached or removed from the blower assembly by a simple push and turn motion. The blower assembly further includes an air inlet and air inlet cover. When the air inlet cover is rotated to a position where the air inlet is open the blower assembly is operable and the string trimmer is inoperable. Furthermore, when the air inlet cover is rotated to a position where the air inlet is closed the blower assembly is inoperable and the string trimmer is operable.
摘要:
A trimmer head configured to receive fixed-length segments of trimmer line has a main housing with a cylindrically shaped side wall forming an open end with diametrically opposed trimmer line holes formed therein. The main housing is rotatable about its central axis by means of a drive shaft. The trimmer head receives an insert body in its open end that is rotated by the main housing. The insert body has an arcuate channel extending from the first line hole adjacent one side of the insert body to the second line hole adjacent the diametrically opposed side of the insert body when the insert body is in a load/unload position with respect to the main housing. In this position, there is a substantially direct guide path between the first and second line holes that allows for easy movement of the line segment along the path. The insert body is rotatable and movable axially with respect to the main housing to an operational position. When in this position, the line segment is forced to take an indirect path between the first and second trimmer line holes, thereby securing the line segment in place during use of the trimmer head.
摘要:
A trimmer head which receives fixed-length trimmer line segments has a housing with a side wall forming an open end with opposed holes formed therein. The trimmer head receives an insert that is rotated by the main housing. The insert has an arcuate channel from the first hole to the second hole adjacent the opposed side of the insert body when the insert body is in a load/unload position. The insert body is rotatable and movable axially with respect to the housing to an operational position where the line segment is forced to take an indirect path between the first and second holes securing the line segment in place during use of the trimmer head.