Resilient scraping blade attachment

Information

  • Patent Grant
  • 6315056
  • Patent Number
    6,315,056
  • Date Filed
    Friday, July 28, 2000
    23 years ago
  • Date Issued
    Tuesday, November 13, 2001
    22 years ago
Abstract
The resilient scraping blade attachment is provided that 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.
Description




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.











BRIEF DESCRIPTION OF THE DRAWINGS




The accompanying drawings incorporated in and forming a part of the specification illustrates several aspects of the present invention, and together with the description and claims serves to explain the principles of the invention. In the accompanying drawings:





FIG. 1

is a top plan view of the resilient scraping blade attachment of the present invention;





FIG. 2

shows a front plan view taken along the lines a—a of

FIG. 1

, showing a contoured curb extension arm;





FIG. 3

is a side plan view of the resilient scraping blade attachment of the present invention;





FIG. 4

is a top partially cutaway view of the resilient scraping blade attachment of the present invention showing an alternate pivot pin arrangement;





FIG. 5

is a partially cutaway side cross sectional view showing the alternate pivot pin arrangement of

FIG. 4

;





FIG. 6

is a side plan view showing the alternate pivot pin arrangement of

FIG. 4

;





FIG. 7A

is a top plan view of the resilient blade assembly component of the present invention;





FIG. 7B

is a side plan view of the resilient blade assembly component of the present invention;





FIG. 7C

is an end view of the resilient blade assembly component of the present invention;





FIG. 8

is a top plan view of the attachment hookup assembly component of the present invention;





FIG. 9

is a side plan view of the attachment hookup assembly component of the present invention;





FIG. 10

is a top plan view of an alternate embodiment of the present invention configured for attachment to a bucket loader; and





FIG. 11

is a side view of an alternate embodiment of the present invention configured for attachment to a bucket loader.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT




Reference will now be made in detail to the present preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings, wherein like numerals indicate corresponding elements throughout the figures.




With reference to

FIG. 1

, the improved resilient scraping blade attachment of the present invention is indicated generally by the reference numeral


10


. It should be appreciated that the resilient scraping blade attachment of the present invention is adapted to be mounted on a vehicle, such as a small tractor, skid steer mover, bucket loader, or other similar equipment. As best shown in

FIG. 1

, the resilient scraping blade attachment


10


includes an attachment hook-up assembly


14


. As best shown in

FIGS. 1

,


3


,


8


, and


9


, the attachment hook-up assembly includes a vehicle interface component


70


adapted to be secured on a vehicle. The attachment hook-up assembly


14


includes a substantially elongated central support member


64


that extends from and is secured on the vehicle interface component


70


of the attachment hook-up assembly


14


. One or more diagonal supports or struts


40


are provided to add stability to the attachment hook-up assembly


14


and to link the central support member


64


with the vehicle interface component


70


of the attachment hook-up assembly


14


.




As best shown in

FIGS. 8 and 9

, a preferably substantially planar mounting plate


54


is secured at the far end of central support member


64


. Preferably, the mounting plate


54


is secured on the central support member


64


by means of a C-bracket


56


.




According to an important aspect of the invention, a pivoting resilient blade assembly


12


is mounted on the attachment hook-up assembly


14


(see FIG.


1


). The resilient blade assembly


12


includes an elongated blade mounting channel


34


. As best shown in

FIG. 3

, one or more resilient blades


26


are mounted on the elongated blade mounting channel


34


. Preferably, the resilient blades


26


are mounted opposite each other on opposing faces of the elongated central support member


64


. Preferably, the resilient blades


26


are made of rubber or a durable rubber composite material. More preferably, the resilient blades


26


are made of polyurethane rubber of appropriate durability and hardness. In addition, any other material of sufficient strength and toughness that has abrasive resistance and sufficient resilience to be resistant to chipping or nicking may be used to form the resilient blades


26


. Alternatively, the resilient blades


26


may be made of substantially any material exhibiting adequate flexibility and durability.




As best shown in

FIGS. 1 and 3

, the resilient blade assembly


12


includes a bearing bracket


50


preferably mounted substantially in the center of the top surface of the central support member


64


. (See also FIGS.


7


A-C). The bearing bracket


50


receives the mounting plate


54


and is retained in position by bearing means


52


, such as a spherical bearing. Bearing


52


, bearing bracket


50


, and mounting plate


54


combine to create the main pivot region


28


about which the resilient blade assembly


12


may pivot.




As best shown in

FIGS. 1 and 2

, the resilient blade assembly


12


includes one or more extension arm mounting tubes


32


. The extension arm mounting tubes


32


are adapted to receive extension arms


20


and to retain extension arms


20


and blades


22


in such a manner so as to increase the effective width of the resilient blade assembly


12


. Extension blades


22


are particularly of use for wiping or cleaning specific contoured surfaces, such as curbs, driveways, and street intersections.




A hydraulic cylinder as shown in

FIG. 1

, is preferably mounted on the central support member


64


of the attachment hook-up assembly


14


. The piston


24


of the hydraulic cylinder


18


is preferably attached to the top surface of the elongated blade mounting channel


34


. By activating the hydraulic cylinder


18


the piston extends, and, as a result, the user may control the angle of the resilient blade assembly


12


. Additionally, as shown in

FIG. 1

, one or more angle limiter chains


16


are provided to control the amount of pivot and rotation of the resilient blade assembly


12


. Preferably, the angle limiter chains


16


limit movement to about 10° in either direction from a line perpendicular from the direction of movement of the prime mover vehicle. The angle limiter chains


16


are attached at a first end, preferably on either side of the main pivot region


28


. Additionally, a second end of the chains


16


are attached to the vehicle interface component


70


by means of an angled chain bracket


30


(See FIGS.


1


and


3


).




An alternate main pivot arrangement


28


A is shown in

FIGS. 4-6

. In this pivot arrangement


28


A, a pivot plate


48


is provided in place of the mounting plate


54


. The pivot plate is attached substantially horizontally, preferably with a C-bracket


56


. The pivot plate is received within pivot chamber


44


and held in place by pivot pin


46


. (See FIG.


5


). Pivot limiting walls


42


(see

FIG. 4

) are provided to limit the amount of pivot of resilient blade assembly


12


. As shown in

FIG. 5

, in this embodiment, the pivot chamber


44


allows for up and down movement of the resilient blade assembly as well.




As shown in

FIGS. 10 and 11

, an alternate attachment hook-up assembly for a bucket loader


58


is shown. As shown in

FIG. 11

, a bucket attachment hook-up assembly recess


60


is adapted to receive a forward portion of a bucket of a bucket loader and can be secured in place by securing means


62


such as a clamp, bolt assembly, or any conventional securing mechanism. Mounting plate


54


operates in much the same manner as shown and described in relation to the attachment hook-up assembly


14


and may be held in place with spherical bearing


52


on a resilient blade assembly


12


.




After the attachment or hook-up of the assembly is accomplished onto a metal bucket or a skid steer loader, the resilient blade assembly


12


is selectively lowered onto the paved surface to be cleaned. The prime mover may be driven forward or backward as desired to scrape or wipe the pavement clean. Advantageously, the blade assembly can maintain good contact with the pavement because of the flexibility of the blades


26


. The blade


26


may also pivot in all three rotational degrees of freedom due to the provision of the main center pivot


28


,


28


A. Accordingly, a more effective seal against the pavement and closer contact is achieved even when the pavement surface has irregular slopes or other surface irregularities, projections, or discontinuities. It should be appreciated that the blade assembly may also be rotated to an angle relative to direction of movement during use to push the material to be removed to one end or the other of the assembly.




The foregoing description of a preferred embodiment of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiment was chosen and described in order to best illustrate the principles of the invention and its practical application to thereby enable one of ordinary skill in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims appended hereto.



Claims
  • 1. A hydraulically operated resilient scraping blade attachment adapted to be mounted on a vehicle comprising:a) an attachment hookup assembly adapted to be mounted on said vehicle, said attachment hookup assembly comprising an elongated central support member, said attachment hookup assembly further comprising one or more diagonal supports attached to said central support member, said attachment hookup assembly further comprising a mounting plate secured at an end of said central support member; b) a resilient blade assembly, said resilient blade assembly comprising an elongated blade mounting channel, said elongated blade mounting channel comprising one or more resilient blades mounted thereon, said resilient blade assembly further comprising one or more extension arm mounting tubes mounted on said elongated blade mounting channel, said extension arm mounting tubes adapted to receive one or more extension blades in such a manner to increase the effective width of said resilient blade assembly, said resilient blade assembly further comprising a bearing bracket mounted thereon, said bearing bracket adapted to receive and retain said mounting plate by bearing means; c) angle limiter means, said angle limiter means comprising one or more hydraulic cylinders mounted on said attachment hookup assembly, each of said one or more hydraulic cylinders comprising a piston mounted on said resilient blade assembly, said angle limiter means further comprising one or more angle limiter chains adapted to limit the pivoting movement of said resilient blade assembly, each of said one or more angle limiter chains being secured at a first end to said resilient blade assembly and at a second end to said an attachment hookup assembly.
  • 2. The scraping blade attachment of claim 1 wherein said attachment hookup assembly further comprises a vehicle interface component, said elongated central support member being secured to and extending from said vehicle interface component, said one or more diagonal supports linking said central support member with said vehicle interface component.
  • 3. The scraping blade attachment of claim 1 wherein said mounting plate is secured on said elongated central support member by a C-bracket.
  • 4. The scraping blade attachment of claim 1 wherein said one or more resilient blades comprise two resilient blades, each of said resilient blades being mounted opposite each other on opposing faces of said elongated central support member.
  • 5. The scraping blade attachment of claim 4 wherein said resilient blades are comprised of rubber.
  • 6. The scraping blade attachment of claim 4 wherein said resilient blades are comprised of a durable rubber composite material.
  • 7. The scraping blade attachment of claim 3 wherein said bearing bracket is mounted substantially in the center of the top surface of said elongated central support member.
  • 8. The scraping blade attachment of claim 7 wherein said mounting plate is retained in position in said bearing bracket by a spherical bearing.
  • 9. The scraping blade attachment of claim 1 further comprising extension arms, said extension arms adapted to be received within said extension arm mounting tubes.
  • 10. The scraping blade attachment of claim 9 wherein said extension arms each comprise contoured extension blades.
  • 11. A hydraulically operated resilient scraping blade attachment adapted to be mounted on a vehicle comprising:a) an attachment hookup assembly adapted to be mounted on said vehicle, said attachment hookup assembly comprising an elongated central support member, said attachment hookup assembly further comprising one or more diagonal supports attached to said central support member, said attachment hookup assembly further comprising a substantially horizontally disposed pivot plate secured at an end of said central support member; b) a resilient blade assembly, said resilient blade assembly comprising an elongated blade mounting channel, said elongated blade mounting channel comprising one or more resilient blades mounted thereon, said resilient blade assembly further comprising one or more extension arm mounting tubes mounted on said elongated blade mounting channel, said extension arm mounting tubes adapted to receive one or more extension blades in such a manner to increase the effective width of said resilient blade assembly, said resilient blade assembly further comprising a pivot chamber, said pivot chamber adapted to receive said pivot plate, said pivot plate being held in place at least partially within said pivot chamber by a pivot pin, said pivot chamber comprising pivot limiting walls adapted to limit the amount of pivot of said pivot plate and said resilient blade assembly; c) angle limiter means, said angle limiter means comprising one or more hydraulic cylinders mounted on said attachment hookup assembly, each of said one or more hydraulic cylinders comprising a piston mounted on said resilient blade assembly, said angle limiter means further comprising one or more angle limiter chains adapted to limit the pivoting movement of said resilient blade assembly, each of said one or more angle limiter chains being secured at a first end to said resilient blade assembly and at a second end to said an attachment hookup assembly.
  • 12. A hydraulically operated resilient scraping blade attachment adapted to be mounted on a vehicle comprising:a) an attachment hookup assembly adapted to be mounted on a bucket loader, said attachment hookup assembly comprising first and second arms, each of said arms comprising a hookup assembly recess adapted to receive a forward portion of a bucket loader, said hookup assembly recesses further comprising securing means for securing said arms to said bucket, said hookup assembly further comprising a transverse support member with said first and second arms extending therefrom, said transverse support member further comprising a mounting plate secured at the mid-point of said transverse support member; b) a resilient blade assembly, said resilient blade assembly comprising an elongated blade mounting channel, said elongated blade mounting channel comprising one or more resilient blades mounted thereon, said resilient blade assembly further comprising one or more extension arm mounting tubes mounted on said elongated blade mounting channel, said extension arm mounting tubes adapted to receive one or more extension blades in such a manner to increase the effective width of said resilient blade assembly, said resilient blade assembly further comprising a bearing bracket mounted thereon, said bearing bracket adapted to receive and retain said mounting plate by bearing means; c) angle limiter means, said angle limiter means comprising one or more hydraulic cylinders mounted on said attachment hookup assembly, each of said one or more hydraulic cylinders comprising a piston mounted on said resilient blade assembly, said angle limiter means further comprising one or more angle limiter chains adapted to limit the pivoting movement of said resilient blade assembly, each of said one or more angle limiter chains being secured at a first end to said resilient blade assembly and at a second end to said an attachment hookup assembly.
Parent Case Info

This application is based on and claims priority benefit of U.S. Provisional Patent Application Ser. No. 60/146,528, filed Jul. 30, 1999, the entire specification of which is incorporated herein by reference.

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Non-Patent Literature Citations (1)
Entry
Product brochure by Mensch Mfg., Hastings, MI.
Provisional Applications (1)
Number Date Country
60/146528 Jul 1999 US