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US 4,400,131 AGranted
Compressed air discharge system for trucks
AssigneeThe Marmon Group, Inc.
InventorNolen C. Blake
Life of this patent
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AssigneeThe Marmon Group, Inc.
InventorNolen C. Blake
Estimating the term…
A compressed air discharge system for facilitating the unloading of material from the dump bed of such as a dump truck, and which is designed for interconnection with the compressed air system of the dump truck. The compressed air discharge system preferably includes an air tank having a conduit interconnected therewith for discharge of compressed air from such air tank and into the dump bed in juxtaposition to generate air shear planes through material lodged within the dump bed, an air supply circuit being interconnected to the compressed air system of the dump truck and the air tank for transmission of compressed air from the dump truck compressed air system to the air tank, the air supply circuit including a valve for selectively bleeding compressed air from the dump truck compressed air system and into the air supply circuit, a valve for preventing discharge of air from the air tank and back through the air supply circuit, and a quick release valve for discharge of a substantial blast of compressed air from the air tank and into the dump bed through the conduit interconnected to the air tank.
In a dump bed vehicle having a compressed air system including an air compressor and reservoir for maintaining a supply of compressed air, the combination with said vehicle of a compressed air discharge system for facilitating the unloading of material lodged in the dump bed thereof, said system including air tank means for receiving a supply of compressed air and conduit means having operable interconnection to said air tank means and an outlet juxtaposed to open into said dump bed for discharge of compressed air from said air tank means and into said dump bed in generating air shear planes through material lodged within said dump bed, quick release valve means having operable interconnection to said conduit means for discharge of a substantial blast of compressed air from said air tank means and into said dump bed through said outlet of said conduit means, and an air supply circuit having operable interconnection to said compressed air system of said dump bed vehicle and said air tank means for transmission of compressed air from said compressed air system of said dump bed vehicle and into said air tank means, said air supply circuit including pressure sensing valve means to sequence bleeding of compressed air from said compressed air system of said dump vehicle and into said air supply circuit as air pressure of said compressed air system of said dump bed vehicle exceeds that required for normal operation of said compressed air system of said dump bed vehicle and check valve means for preventing discharge of compressed air from said air tank means and into said compressed air system of said dump bed vehicle when the air pressure of said compressed air system of said dump bed vehicle is less than that of said air tank means.
In a dump bed vehicle having a compressed air system including an air compressor and reservoir for maintaining a supply of compressed air, the combination with said vehicle of a compressed air discharge system for facilitating the unloading of material lodged in the dump bed thereof, said system including air tank means for receiving a supply of compressed air and conduit means having operable interconnection to said air tank means and an outlet juxtaposed to open into said dump bed for discharge of compressed air from said air tank means and into said dump bed in generating air shear planes through material lodged within said dump bed, quick release valve means having operable interconnection to said conduit means for discharge of a substantial blast of compressed air from said air tank means and into said dump bed through said outlet of said conduit means, and an air supply circuit having operable interconnection to said compressed air system of said dump bed vehicle and said air tank means for transmission of compressed air from said compressed air system of said dump bed vehicle and into said air tank means, said air supply circuit including valve means for selectively bleeding compressed air from said compressed air system of said dump vehicle and into said air supply circuit and valve means for preventing discharge of compressed air from said air tank means and back through said air supply circuit, said quick release valve means comprising diaphragm valve means having operable interconnection with said air supply circuit for pilot operation thereof on venting of air from said air supply circuit, said second mentioned valve means of said air supply circuit being located therewithin intermediate operable interconnection thereof with said air tank means and operable pilot interconnection of diaphragm valve means therewith, and said first mentioned valve means comprises means for venting air for said air supply circuit, said last mentioned valve means being located in said air supply circuit intermediate operable interconnection thereof with said air tank means and operable pilot operation interconnection therewith of said diaphragm valve means.
Dependencies are inferred from the claim text.