Sand blasting apparatus

Abstract

An abrasive cleaning apparatus configured for use in combination with a mobile chassis comprising a base means including attachment means to fasten the abrasive cleaning apparatus to the mobile chassis, an adjustable nozzle support means to operatively support a plurality of nozzle means thereon and interconnecting boom means coupled between the base means and adjustable nozzle support means. The interconnecting boom means includes a first and second boom element arranged in telescoping relation relative to each other to permit linear adjustment of the adjustable nozzle support means relative to the base means and mobile chassis. The adjustable nozzle support means includes a first and second positioning means to permit movement of the plurality of nozzle means in a first and second plane respectively.

Now that the invention has been described, I claim: .[. 
     
       1.  An abrasive cleaning apparatus configured for use in combination with fluid medium pressure source, said abrasive cleaning apparatus comprising a base means for mounting said abrasive cleaning apparatus on a platform, an adjustable nozzle support means interconnected to said base means by interconnecting boom means, said adjustable nozzle support means including a first positioning means to pivotally adjust said adjustable nozzle support means in a first plane relative to said base means and a second positioning means coupled to said first positioning means to pivotally adjust said adjustable nozzle support means in a second plane relative to said base means, said first positioning means comprising a first and second element held in fixed relationship relative to one another by a pair of end members disposed at opposite ends thereof, said first positioning means being pivotally attached to the outer portion of said interconnecting boom means, said second positioning means comprises a frame including a plurality of apertures formed therein to receive a corresponding plurality of nozzles to fix said nozzles in fixed spaced relationship relative to one another, said second positioning means being coupled at substantially the mid-point thereof to the outer end member of said first positioning means to permit pivotal movement relative to one another, said second positioning means further includes a handle means fixedly attached thereto such that the weight of said nozzles is supported by said interconnecting boom means to permit movement of said adjustable nozzle support means in said first and second planes..]. .[.2. The abrasive cleansing apparatus in claim 1 wherein said interconnecting boom means and said base means cooperatively form the first adjustment means to rotatably adjust said adjustable support means relative to said base means in the plane of said base means..]. .[.3. An abrasive cleaning apparatus of claim 2 wherein said base means comprises a base plate having a plurality of apertures formed therein and said interconnecting boom means comprises a first boom element including an engaging means, said engaging means disposed to selectively engage one of said plurality of said apertures to selectively position said first boom element relative to said base plate..]. .[.4. The abrasive cleaning apparatus of claim 1 wherein said interconnecting boom means comprises a first and second boom element, said first and second boom element arranged in telescopic relationship relative to one another to comprise a second adjustment means to permit linear adjustment of said adjustable nozzle support means relative to said base means..]. .[.5. The abrasive cleaning apparatus of claim 4 wherein said interconnecting boom means further includes a coupling means to selectively fix the position of said second boom element relative to said first boom element..]. .[.6. The abrasive cleaning apparatus of claim 1 wherein said first plane is substantially perpendicular to the plane of said base means and said second plane is perpendicular to both said first plane and the plane of said base means..]. .Iadd. 7. An abrasive cleaning apparatus configured for use in combination with a fluid medium pressure source, comprising in combination: a base means;   a mobile chassis receiving said base means for mobile operation;   a plurality of nozzles;   a plurality of conduits connecting said plurality of nozzles to the fluid medium pressure source;   means for securing said plurality of nozzles in fixed relationship relative to one another;   said means for securing said plurality of nozzles including a nozzle support securing said plurality of nozzles in a fixed substantially parallel relation;   an interconnecting boom means comprising a first and a second boom element for interconnecting said base means and said plurality of nozzles;   first adjustment means for pivotably adjusting said first boom element relative to said base means;   second adjustment means comprising said first and second boom elements arranged in telescopic relationship relative to one another to permit linear adjustment of said plurality of nozzles relative to said base means;   first and second positioning means for pivotably adjusting said plurality of nozzles relative to a terminal end of said second boom element;   said first and second positioning means each including only a single pivot for pivotably mounting said plurality of nozzles to said second boom element of said interconnecting boom means; and   said first and second positioning means respectively pivotably mounting said plurality of nozzles in first and second mutually perpendicular planes for enabling said plurality of nozzles to pivot said plurality of nozzles in two mutually perpendicular directions at said terminal end of said interconnecting boom means. .Iaddend. .Iadd. 8. An apparatus as set forth in claim 7, wherein one of said first and second planes is substantially parallel to the plane of movement of said interconnecting boom means about said first adjustment means. .Iaddend..Iadd. 9. An apparatus as set forth in claim 7, wherein said base means comprises a base plate having a plurality of apertures formed therein and said interconnecting boom means comprises a first boom element including an engaging means, said engaging means disposed to selectively engage one of said plurality of said apertures to selectively position said first boom element relative to said base plate. .Iaddend..Iadd. 10. An apparatus as set forth in claim 7, wherein said interconnecting boom means further includes a coupling means to selectively fix the position of said second boom element relative to said first boom element. .Iaddend. .Iadd. 11. An abrasive cleaning apparatus configured for use in combination with a fluid medium pressure source, comprising in combination:   a base means;   a mobile chassis receiving said base means for mobile operation;   a plurality of nozzles;   a plurality of conduits connecting said plurality of nozzles to the fluid medium pressure source;   a nozzle support means for securing said plurality of nozzles in fixed, substantially parallel relationship relative to one another;   an interconnecting boom means comprising a first and a second boom element for interconnecting said base means and said plurality of nozzles;   first adjustment means for pivotably adjusting said first boom element relative to said base means;   second adjustment means comprising said first and second boom elements arranged in telescopic relationship relative to one another to permit linear adjustment of said plurality of nozzles relative to said base means;   first and second positioning means for pivotably adjusting said nozzle support means containing said plurality of nozzles relative to a terminal end of said second boom element;   each of said first and second positioning means consisting of only a single pivot for mounting said plurality of nozzles fixed in said nozzle support means; and   said first and second positioning means respectively pivotably mounting said nozzle support means about first and second mutually perpendicular axes for enabling said plurality of nozzles to pivot said plurality of nozzles in two mutually pependicular directions at said terminal end of said interconnecting boom means. .Iaddend.