Road structure – process – or apparatus – Apparatus – Material distribution means
Patent
1995-09-29
1997-09-09
Lisehora, James
Road structure, process, or apparatus
Apparatus
Material distribution means
404119, 404123, E01C 1922
Patent
active
056649088
ABSTRACT:
A powered rotary screed has a plurality of interchangeable modules of different lengths so that the power screed can accommodate various sizes of screed jobs. Additionally, the rotary screed comprises a centrally located expansion member that can be adjusted to cause an upper ridge member of the rotary screed to expand outward, thus raising a medial portion of the roller screeds so that they may be adjusted to maintain horizontal alignment. The screed is propelled by drive tubes that are supported by drive modules and powered by hydraulic motors. The screed further comprises a two-section strike tube which is likewise powered by a hydraulic motor. An operator rides in an operator's station and controls the speed and direction of the rotary screed. The drive tubes include a leading drive tube which is vertically adjustable to adjust the amount of pressure of the strike tube upon the concrete form.
REFERENCES:
patent: 4577994 (1986-03-01), Miller
patent: 4614486 (1986-09-01), Bragagnini
patent: 4747726 (1988-05-01), Garner et al.
patent: 4913584 (1990-04-01), Garner et al.
patent: 4931008 (1990-06-01), Morrison
patent: 4964754 (1990-10-01), Garner et al.
patent: 5046889 (1991-09-01), Sterner, Jr.
patent: 5190400 (1993-03-01), Sterner
patent: 5456549 (1995-10-01), Paladeni
patent: 5507591 (1996-04-01), Lyons et al.
"Razorback Scrreds", Allen Engineering Corporation Advertising Brochure, Paragould, Arkansas, 1992.
LandOfFree
Powered rotary screed does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Powered rotary screed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powered rotary screed will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-65107