초록 ▼

A rotary hand-held tilling and weed removing device comprises a shaft; a “T” shaped handle and two lock collars and is attachable to the chuck of a power drill. The shaft is provided with rotary arms which allow tilling and weed removal in very confined areas and precision control from the shaft han

A rotary hand-held tilling and weed removing device comprises a shaft; a “T” shaped handle and two lock collars and is attachable to the chuck of a power drill. The shaft is provided with rotary arms which allow tilling and weed removal in very confined areas and precision control from the shaft handle adds to the ease of use. This gardening tool has a simple design and does not require blade or tiller bar replacement making it very cost effective.

대표청구항 ▼

A rotary hand-held tilling and weed removing device comprises a shaft; a “T” shaped handle and two lock collars and is attachable to the chuck of a power drill. The shaft is provided with rotary arms which allow tilling and weed removal in very confined areas and precision control from the shaft han

A rotary hand-held tilling and weed removing device comprises a shaft; a “T” shaped handle and two lock collars and is attachable to the chuck of a power drill. The shaft is provided with rotary arms which allow tilling and weed removal in very confined areas and precision control from the shaft handle adds to the ease of use. This gardening tool has a simple design and does not require blade or tiller bar replacement making it very cost effective. the clutch spur gear configured to couple with the arcuate gear rack for transmitting motion and driving force during the drive strokes;a clutch plate comprising a second hub, a first annular ring having a plurality of wedge-shaped teeth on a face thereof, and a third two-tiered, central, through aperture extending through the clutch plate and the second hub, a first tier of the third aperture for slidably coupling with the first hub, the clutch plate configured to couple with the clutch spur gear during the drive and return strokes;a clutch spring comprising a first clutch spring end portion seating within the first tier of the second aperture and against a second tier of the second aperture and a second clutch spring end portion seating against the second tier of the third aperture, the clutch spring configured to bias the clutch plate in a disengaged position after each drive stroke;a geared clutch plate comprising a spur gear with a second annular ring having a plurality of wedge-shaped teeth on a face thereof and a fourth central, through aperture for receiving the second hub, the geared clutch plate configured to couple with the clutch plate during the drive strokes and to decouple with the clutch plate during the return strokes.a three-tiered clutch shaft extending through the third aperture, the clutch spring, and the second aperture, a first tier of the clutch shaft stopping the second hub, a second tier of the clutch shaft extending through both the first tier of the second aperture and a second tier of the third aperture defined in a distal end portion of the third hub, a third tier of the clutch shaft extending through the second tier of the second aperture, the clutch shaft configured to allow the clutch spur gear, the clutch plate, and the geared clutch plate to pivot thereon between the drive and return strokes;the clutch assembly configured to provide a locked driving connection for the geared clutch plate and the clutch plate upon their rotation during the drive strokes and to free the clutch plate for detached relative movement upon its rotation during the return strokes.3. The manually-powered drive device of claim 2, the drive train further comprising a back drive lock assembly comprising:a back drive lock comprising an annularly, cylindrical portion and a wedge-shaped portion configured to removably couple with the geared clutch plate, the back drive lock configured to limit the geared clutch plate from turning in a disengaged direction during the return stroke;a back drive stop shaft configured to limit the displacement of the back drive lock during the return strokes;a torsion back drive spring comprising a first back drive spring end portion configured for coupling with the back drive lock and comprising a second back drive spring end portion configured for coupling with an internal portion of the pistol-shaped housing, the torsion back drive spring configured to bias the back drive lock against the back drive stop shaft in an engaged position with the geared clutch plate after each drive stroke; anda back drive shaft extending through the annularly, cylindrical portion of the back drive lock, the back drive shaft configured to allow the back drive lock to pivot thereon during the drive strokes;the back drive lock assembly configured to retain the geared clutch plate in a fixed position upon rotation of the clutch plate during the return strokes.4. The manually-powered drive device of claim 3, the drive train further comprising an idler assembly comprising:an idler spur gear comprising a fifth central aperture extending therethrough, the idler spur gear configured to couple with the geared clutch plate for transmitting motion and driving force during the drive strokes; andan idler shaft ext