Road structure – process – or apparatus – Apparatus – Material distribution means
Reexamination Certificate
1999-01-15
2001-03-20
Will, Thomas B. (Department: 3671)
Road structure, process, or apparatus
Apparatus
Material distribution means
C404S101000, C404S103000, C404S118000
Reexamination Certificate
active
06203244
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a screeding attachment that is securable to the bucket tilt mechanisms of an industrial utility vehicle to provide a low cost highly maneuverable and versatile self propelled screeding apparatus. More specifically this invention relates to an attachment which detachably secures a special function apparatus to an industrial utility vehicle to provide a low cost self propelled special function piece of equipment while not requiring the dedication of the industrial utility vehicle to that special function. The special function of the attachment of this invention is the screeding of flowable paving materials.
The use of a simple beam as a screed to level paving materials has been practiced since the dawn of paving technology.
Self propelled screeds are known in the art. Brandstetter, U.S. Pat. No. 3,526,173, is one such self propelled screeding apparatus.
The employment of special function attachments which are secured to the bucket tilt mechanisms of industrial utility vehicles is also known in the art. The instant inventor's U.S. Pat. No. 5,529,131 is for one such an attachment.
There has been a long felt and unfulfilled need in the art for a low cost, maneuverable, self propelled screeding apparatus for pouring small and moderate size pavement jobs such as driveways, sidewalks and slabs inside structures.
There has been a long felt and unfulfilled need in the art for a self propelled screeding apparatus as described above that is adaptable to a wide range of screeding mechanisms, controls, guides and aids.
There has been a long felt and unfulfilled need in the art for a means for distributing and depositing paving materials in the amount desired and at the location desired so as to minimize the amount of paving material to be moved in order to strike off and true the surface being poured.
This invention relates to solutions to the problems raised above and to improvements to existing solutions to those problems.
SUMMARY OF THE INVENTION
The invention in its simplest form is a screeding attachment for an industrial utility vehicle. The attachment includes a substantially rectangular frame having a longitudinal axis along the direction in which screeding will be performed, a vehicle end member, and a screed end member positioned transverse to the longitudinal axis. The frame further includes a first frame side member and a second frame side member positioned parallel to the longitudinal axis, one to each side of the frame. The vehicle end frame member has as a part thereof a coupling means which is engageable with and disengageable from a bucket tilt mechanism of an industrial utility vehicle. The vehicle end frame member is positioned so as to permit the operator of a utility vehicle to which the screeding attachment is attached to observe the functioning of a screed attached to the screed side member. The first side member and the second side member each have depending therefrom a ground engaging castered wheel assembly.
In general terms, the invention involves the provision of a novel means for distributing and depositing paving materials uniformly and continuously in front of the screed while preserving an operator's view of the screed, and a novel screed that exploits the uniform deposition of paving material and the operator's view of the screed to achieve a superior screeding of the paving materials.
Other objects and utilities provided by this invention will be made apparent from the following specification, drawings, and claims.
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Baxter William K.
Godfrey & Kahn SC
Markovich Kristine M.
Van-Boh Systems, Inc.
Will Thomas B.
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