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:
May. 17, 2011
Filed:
Apr. 05, 2007
Richard D. Cerra, Acme, PA (US);
Andrew J. Ciesielski, Greensburg, PA (US);
Stephen H. Ciesielski, Slickville, PA (US);
James J. Wagner, Manor, PA (US);
Thomas A. Wagner, Export, PA (US);
Richard D. Cerra, Acme, PA (US);
Andrew J. Ciesielski, Greensburg, PA (US);
Stephen H. Ciesielski, Slickville, PA (US);
James J. Wagner, Manor, PA (US);
Thomas A. Wagner, Export, PA (US);
Allegheny Paper Shredders Corporation, Delmont, PA (US);
Abstract
An adjustable screen apparatus for a material destruction device includes a first stationary fixed member and a second member positioned in an operatively juxtaposed and nesting relationship for reciprocal movement relative to the first member, each having a predetermined plurality of openings which are disposed in a predetermined pattern. A guide system is provided for guiding the reciprocal movement of the second member relative to the first member. A power operated drive is coupled to a source of power and to the second member for reciprocally moving the second member between a first position wherein each opening in the second member substantially overlaps a respective opening in the first member for producing large size particles and a second position wherein each opening in the second member partially overlaps each of a pair of adjacently disposed openings in the first member for producing small size particles.