Earth working – Tool – standard or connection – Frame-supported blade – scraper – or smoother drawn by vehicle
Reexamination Certificate
2000-07-28
2001-11-13
Batson, Victor (Department: 3671)
Earth working
Tool, standard or connection
Frame-supported blade, scraper, or smoother drawn by vehicle
C172S817000, C172S246000, C172S253000, C172S612000, C037S233000, C037S266000, C037S407000, C037S903000
Reexamination Certificate
active
06315056
ABSTRACT:
TECHNICAL FIELD
This invention relates generally to the scraper attachments and, in particular, to resilient scraper attachment assemblies adapted to be readily attachable to prime movers such as tractors, front end loaders, backhoe buckets, or skid steer loaders. The present invention is specifically adapted to remove mud, gravel, and other debris that accumulates on roadways and must be periodically removed.
BACKGROUND OF THE INVENTION
Various debris removal attachments have been used in the past, but their high capital cost and lack of durability and versatility have proven to be a disadvantage in practice. For example, removal of debris with a metal bucket often results in undesirable and uneven wear of the bucket edge. Damage and deformation of a bucket is further accelerated by engagement with curbs, road projections, potholes, or the like. Because of this rapid wear, it is common for metal blades or buckets to be frequently replaced or fixed. In addition, by using such a deformed and rigid bucket, frequently a lot of material remains on the road or pavement due to the deformations in the bucket edge, irregularities in the surface of the pavement, and the general inability of a thick and unyielding bucket edge to wipe a thin coating of wet mud or debris off the pavement. In addition, hard edges of bucket scrapers or metal blades undesirably scrape asphalt off the rocks embedded in the pavement, which allow water to seep therein, which in turn causes premature road damage.
Rotary brooms or brushes have been used to remove material from pavement, however, in practice, material to be removed must be dry in order to be removed with such a broom. In addition, brushes and brooms frequently result in problematic dust creation, which frequently settles back on the roadway in any event.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a resilient scraping blade attachment of sufficient hardness and durability to address the aforementioned disadvantages of prior art debris removal attachments. This and other advantages of the invention will be set forth in the following description and accompanying drawings.
To achieve the foregoing and other objects, and in accordance with one aspect of the present invention, an improved resilient scraping blade attachment is provided. The resilient scraping blade attachment includes an attachment hook-up assembly adapted to be mounted on a vehicle. The attachment hook-up assembly includes an elongated central support member and a vehicle interface component. In addition, the attachment hook-up assembly includes a pair of diagonal supports that link the central support member to the vehicle interface component. A mounting plate is secured at an end of the central support member.
A resilient blade assembly is attached to the attachment hook-up assembly by means of a bearing bracket and bearing means. The resilient blade assembly includes an elongated blade mounting channel having a pair of resilient blades mounted thereon. The resilient blade assembly includes extension blades that may be mounted at the ends of the blade mounting channel in order to increase the effective width of the resilient blade assembly. The extension blades may be contoured to approximate different surfaces such as a roadside curb.
A hydraulic cylinder is mounted on the attachment hook-up assembly and includes a piston that is mounted on the resilient blade assembly to control and pivot the resilient blade assembly. Angle limiter chains are provided to limit the pivoting movement of the resilient blade assembly.
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Product brochure by Mensch Mfg., Hastings, MI.
Ransom Desmond L.
Thompson Jon Thomas
Batson Victor
Frost Brown Todd
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