Patent ID: 11883849
Assignee: DERRICK CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 10:
11. A method of screening a material, the method comprising:
feeding the material into a vibratory screening machine, the vibratory screening machine comprising:
an outer frame;
an inner frame connected to the outer frame;
a vibratory motor assembly attached to the inner frame such that the vibratory motor assembly vibrates the inner frame; and
a plurality of screen deck assemblies, each screen deck assembly comprising a screening deck, wherein each screen deck assembly is secured within the vibratory screening machine in a stacked position within a stacked configuration of the plurality of screen deck assemblies and wherein each screen deck is configured to receive a screen assembly,
an undersized material discharge assembly configured to receive materials that pass through at least one of the screen assemblies; and
an oversized material discharge assembly configured to receive materials that pass over a top surface of the at least one of the screen assemblies,
wherein the undersized material discharge assembly includes an undersized material chute in communication with each of the plurality of screen deck assemblies,
wherein the oversized material discharge assembly includes a first oversized material chute assembly in communication with each of the plurality of screen deck assemblies and a second oversized material chute assembly in communication with each of the plurality of screen deck assemblies; and

screening the material such that an undersized material passes through the at least one of the screen assemblies and an oversized material passes over the top surface of the at least one of the screen assemblies.