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:
Dec. 14, 1999
Filed:
Mar. 11, 1998
Applicant:
Inventor:
John J Bakula, Grand Island, NY (US);
Assignee:
Derrick Manufacturing Corporation, Buffalo, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B07B / ; B07B / ;
U.S. Cl.
CPC ...
210388 ; 2104931 ; 2104932 ; 2104933 ; 210489 ; 210490 ; 210498 ; 210499 ; 210389 ; 209397 ; 209399 ; 209401 ; 209403 ; 209329 ;
Abstract
A screening screen assembly for a vibratory screening machine including an apertured plate having side edge portions with first apertured bands extending between the side edge portions and second unapertured bands alternating with the first bands, the second bands having a wider width than the borders between the apertures in the first band, and an undulating screening screen having ridges and troughs between the ridges extending crosswise to the first and second plate bands and being secured thereto.