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:
Oct. 04, 1988
Filed:
May. 20, 1986
Applicant:
Inventor:
James L Zook, Denver, CO (US);
Assignee:
Cobe Laboratories, Inc., Lakewood, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032171 ; 21032172 ;
Abstract
A diaphragm for use in a fluid flow chamber comprising a generally flat flexible sheet that is engageable at its periphery and has a central portion that is reciprocally movable along an axis perpendicular to a plane through the periphery, the flexible sheet having annular corrugations around the center portion, and a magnet secured to the center of the sheet, the magnet having a front and a rear, the corrugations causing the front and rear to maintain their orientation with respect to the axis as the central portion travels along the axis.