초록 ▼

The present invention is a walk-behind power unit stabilizing system for use on portable trenchers and other equipment. The preferred application comprises a retractable wheel assembly mounted at the rear of a trencher where the invented device is allowed to be maneuvered by the user from a lower, s

The present invention is a walk-behind power unit stabilizing system for use on portable trenchers and other equipment. The preferred application comprises a retractable wheel assembly mounted at the rear of a trencher where the invented device is allowed to be maneuvered by the user from a lower, stabilization position to an upper, transport position. The device has a handle that allows the user to move the device from the upper, transport position to the lower, stabilized position, and vice versa, easily by raising and lowering the handle, either by hand or by moving the handle up or down using the user's foot. Some of the main benefits of the invented device include: ease of use; a reduction in the physical labor required to operate a trencher; stability; the ability to more consistently control the depth at which the trench is dug; an increased ability to traverse perpendicular trenches; increased force exerted on the boom when inserting the boom into the ground; and trench straightening.

대표청구항 ▼

[ I claim:] [1.] A walk-behind power unit stabilizing system comprising:a walk-behind trencher power unit having a front side, a rear side, a trenching boom at the front side, and a rear drive wheel at the rear side of the power unit; and,a retractable assembly connected to the rear side of said pow

[ I claim:] [1.] A walk-behind power unit stabilizing system comprising:a walk-behind trencher power unit having a front side, a rear side, a trenching boom at the front side, and a rear drive wheel at the rear side of the power unit; and,a retractable assembly connected to the rear side of said power unit and extending rearward behind the rear drive wheel and downward from the rear side of the power unit, said retractable assembly contacting the ground in a lower position and limiting digging arch and kickback of said walk-behind power unit when the trenching boom strikes buried obstacles during removal of dirt from the ground to form a linear trench, wherein the retractable assembly is adapted to be temporarily raised above the rear drive wheel to an upper position to facilitate pivoting and steering of said walk-behind power unit during transport of the power unit;said stabilizing system comprising a lock holding the retractable assembly in the lower position contacting the ground, and a retraction spring automatically retracting the retractable assembly into an upper position when the lock is unlocked.