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  Vibrating device for screeding machineUSPTO Application #: 20070116520Title: Vibrating device for screeding machine Abstract: A vibrating device for a screed head assembly mountable to a screeding device includes a vibrating member and a vibrating system. The vibrating member comprises an integrally formed elongated member having upper and lower screeding surfaces and a vertical portion extending therebetween. The vertical portion may define a hollow cavity therealong. The vibrating system is operable to vibrate the vibrating member to compact and smooth the concrete surface. The vibrating system is mounted to the vertical portion of the vibrating member and operates to vibrate the vibrating member to screed the concrete surface when the lower screeding surface engages the concrete surface. The vibrating system may include a drive motor operable to rotatably drive at least one drive pulley which, in turn, drives a drive belt to rotate at least one eccentric element rotatably mounted to the vibrating member. (end of abstract) Agent: Van Dyke, Gardner, Linn And Burkhart, LLP - Grand Rapids, MI, US Inventors: Philip J. Quenzi, Jeffrey W. Torvinen USPTO Applicaton #: 20070116520 - Class: 404114000 (USPTO) Related Patent Categories: Road Structure, Process, Or Apparatus, Apparatus, Means To Agitate Material, Mounted On Screed The Patent Description & Claims data below is from USPTO Patent Application 20070116520. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCE TO RELATED APPLICATION [0001] The present application claims the benefit of U.S. provisional application Ser. No. 60/738,091, filed Nov. 18, 2005, which is hereby incorporated herein by reference in its entirety. FIELD OF THE INVENTION [0002] The present invention relates generally to screeding devices for screeding and finishing a surface of loose and/or plastic material such as of uncured concrete, sand, dirt, combinations thereof or the like and, more particularly, to a screeding device having a screed head assembly which includes a vibrating device. BACKGROUND OF THE INVENTION [0003] It is known to provide a screed head assembly which includes a plow, auger and vibrating device and which is operable to establish a grade and substantially compact, smooth and/or finish the surface of loose, plastic material such as uncured concrete. The vibrating device typically includes a generally horizontal beam for engaging the concrete surface, and a generally horizontal shaft extending along the beam. The shaft includes eccentric weights or discs spaced therealong. Rotational driving of the shaft thus imparts rotation of the eccentric weights which, in turn, causes the beam to vibrate to compact and screed the concrete surface as the screed head assembly is moved over and along the concrete surface. [0004] Typically, the eccentric weights are rotated in response to a drive motor that rotatably drives a horizontal drive shaft that is mounted along the vibrating member. The horizontal drive shaft or shafts is/are rotatably driven by the drive motor and function to rotatably drive the eccentric weights. Such horizontal drive shafts are supported and mounted along the vibrating member via a plurality of bearings and mounts to rotatably support the shaft or shafts at multiple locations along the vibrating members. SUMMARY OF THE INVENTION [0005] The present invention is intended to provide a screed head assembly for a screeding device or machine which includes a plow, an auger and a vibrating device. The vibrating device includes a drive motor and drive system that operate to rotate a pair of eccentric discs at or toward or near each end of a vibrating member, so as to vibrate the vibrating member to compact and smooth the concrete surface. The drive system includes drive pulleys and drive belts that operate to rotate the eccentric discs in response to rotational driving by the drive motor. [0006] According to an aspect of the present invention, a vibrating device for a screed head assembly mountable to a screeding device includes a vibrating member and a vibrating system. The vibrating member comprises a unitary or integrally formed elongated member having upper and lower screeding surfaces and a vertical portion extending therebetween. The vertical portion defines a hollow cavity therealong. The vibrating system is mounted to the vertical portion of the vibrating member and operates to vibrate the vibrating member to screed the concrete surface when the lower screeding surface engages the concrete surface. [0007] The vibrating member may comprise an extruded vibrating member, such as extruded of aluminum or other suitable material. The upper and lower screeding surfaces may be formed to be substantially similar so that the vibrating member may be flipped over to use the initially upper screeding surface to engage the concrete surface. Optionally, the hollow cavity may be filled with an insulating element. [0008] According to another aspect of the present invention, a vibrating device for a screed head assembly mountable to a screeding device includes a vibrating member and a vibrating system. The vibrating member includes a generally planar lower surface for engaging a surface of uncured concrete, dirt, sand, gravel or the like, and a generally vertical portion extending upwardly from the lower surface. The generally vertical portion extends longitudinally along the vibrating member. The vibrating system is operable to vibrate the vibrating member to compact and smooth the concrete surface. The vibrating system includes a drive motor operable to rotatably drive at least one drive pulley which, in turn, drives a drive band or belt to rotate at least one eccentric element rotatably mounted to the vibrating member. Rotation of the eccentric element or elements imparts a vibration to the vibrating member. [0009] Optionally, the eccentric element comprises a pair of eccentric elements spaced along the vibrating member. Optionally, the eccentric element comprises a pair of eccentric discs mounted at a rotatable shaft. One of the eccentric discs may be fixedly mounted to the shaft and the other of the eccentric discs may be adjustably positioned about the shaft relative to the first eccentric disc. The eccentric discs may be selectively oriented to selectively set a degree of vibration of the vibrating element. [0010] Therefore, the present invention provides a vibrating device for a screed head assembly that includes an extruded vibrating member and a pulley and belt drive system. The extruded vibrating member may provide a low cost vibrating member that may be flipped or reversed to provide an increased life cycle of the vibrating member as one surface or edge becomes worn. The extruded vibrating member may include a hollow cavity therealong, and the cavity may be substantially filled with an insulating material or element to reduce noise during operation of the vibrating device. The drive system provides rotational driving of eccentric elements to vibrate the vibrating member, while providing a mounting arrangement that has reduced bearings and mounts as compared to known horizontal shaft vibrating systems. [0011] These and other objects, purposes, advantages and features of the present invention will become apparent upon review of the following specification in conjunction with the drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0012] FIG. 1 is a perspective view of a screed device or machine having a screed head assembly and vibrating device in accordance with the present invention; [0013] FIG. 2 is a perspective view of the vibrating device suitable for use with the screed head assembly of FIG. 1; [0014] FIG. 3 is another perspective view of the vibrating device of FIG. 2; [0015] FIG. 4 is another perspective view of the vibrating device of FIGS. 2 and 3, taken generally at an end of the vibrating device; [0016] FIG. 5 is another perspective view of the vibrating device of FIGS. 2-4, taken generally at the same end as in FIG. 4; [0017] FIG. 6 is an end elevation of a portion of the vibrating device of the present invention, showing the drive belts and pulleys of the drive system of the present invention; [0018] FIG. 7 is an enlarged perspective view of the drive system of the vibrating device of FIG. 3; [0019] FIG. 8 is an enlarged end elevation of the drive system shown in FIG. 6; and Continue reading... Full patent description for Vibrating device for screeding machine Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Vibrating device for screeding machine patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Vibrating device for screeding machine or other areas of interest. ### Previous Patent Application: Systems and methods for milling paving material with increased stability, support, and power Next Patent Application: Surface structure for athletic fields Industry Class: Road structure, process, or apparatus ### FreshPatents.com Support Thank you for viewing the Vibrating device for screeding machine patent info. 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