초록 ▼

A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that t

A portable screed for working concrete and which is mounted on the user. The screed includes a variable length screed plate, a vibrator for the screed plate, a frame attached to the screed plate, a body harness connected intermediate the ends of the frame, and a balancing weight positioned so that the center of gravity of the screed is essentially coextensive with the center of gravity of the operator. The body harness is adjustable along the frame, and the frame may be adjustable as required to ensure that the center of gravity of the frame is positioned coextensively with the center of gravity of the operator so that the operator is not unbalanced by the screed.

대표청구항 ▼

A portable screed for working concrete as the screed is moved across the concrete, the screed being configured to be mounted on and piloted by a human being, comprising a. a screed plate for working concrete, b. means to impart vibrations to the screed plate for tamping and leveling the concrete, c.

A portable screed for working concrete as the screed is moved across the concrete, the screed being configured to be mounted on and piloted by a human being, comprising a. a screed plate for working concrete, b. means to impart vibrations to the screed plate for tamping and leveling the concrete, c. an elongated frame, d. means pivotally connecting one end of said frame to said screed plate, e. a body harness connected to said frame intermediate the ends thereof, and f. balancing means connected to said frame for positioning the center of gravity of said screed at the vicinity of the connection of said harness to said frame, said balancing means including a weight attached to said frame adjacent the end thereof opposite to said screed plate such that said weight counterbalances said screed to thereby so position said center of gravity.