The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Jul. 03, 2019
Applicant:
Derrick Corporation, Buffalo, NY (US);
Inventors:
Keith Wojciechowski, Lakeview, NY (US);
Christian Newman, Lakeview, NY (US);
Assignee:
DERRICK CORPORATION, Buffalo, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B07B 1/28 (2006.01); B07B 1/30 (2006.01); B07B 1/42 (2006.01); B07B 1/46 (2006.01);
U.S. Cl.
CPC ...
B07B 1/28 (2013.01); B07B 1/30 (2013.01); B07B 1/42 (2013.01); B07B 1/46 (2013.01); B07B 1/4609 (2013.01);
Abstract
A vibratory screening machine includes a primary screening area and a pre-screening assembly including a frame and screen assemblies. The screen assemblies are secured to the frame and form a pre-screening surface. The frame is attached to the vibratory screening machine such that the concave pre-screening surface is above the primary screening area.