Patent ID: 11958077
Assignee: DERRICK CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A method of screening materials with a vibratory screening machine, comprising:
placing a screening assembly on a screen receiving portion of a vibratory screening machine that includes a first plurality of compression pistons located along a first side of the screen receiving portion, where the screening assembly comprises a support member and a screening surface mounted on the support member, the support member including front and rear edges and first and second side edges, and wherein a first plurality of mounting apertures are provided on the first side edge of the support member, each mounting aperture including at least one compression surface;
causing the first plurality of compression pistons to move from a retracted position to an extended position located closer to a centerline of the support member than the retracted position such that each of the first plurality of compression pistons applies a compressive force to a corresponding one of the compression surfaces of the support member, and such that compressive forces applied to the compression surfaces press the screening assembly into engagement with the screen receiving portion of the vibratory screening machine;
depositing material to be screened on a top surface of the screening assembly; and
causing the screening assembly to vibrate such that fluids and small particles within the material to be screened pass through the screening assembly and such that larger particles that cannot pass through the screening assembly move along the top surface of the screening assembly and ultimately travel off a rear of the screening assembly.