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

Claim 25:
26. 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 has front and rear edges and first and second side edges, the screening assembly including a screening surface formed of a plastic or synthetic material and having a plurality of screening openings, wherein a first plurality of mounting apertures are provided at locations recessed within the first side edge of the screening assembly;
causing the first plurality of compression pistons to move inward towards a centerline of the screening assembly such an end face of each of the first plurality of compression pistons extends into the first side edge of the screening assembly and applies a compressive force to a corresponding one of the first plurality of mounting apertures, wherein the compressive forces applied to the first plurality of mounting apertures 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.