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:
Nov. 12, 1991
Filed:
Apr. 12, 1990
Applicant:
Inventors:
R David Forsgren, Bloomington, MN (US);
Henry J Drasner, III, Edina, MN (US);
Roy E Fielder, St. Louis Park, MN (US);
Assignee:
Donaldson Company, Inc., Bloomington, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ; A62B / ; A62B / ; A62B / ;
U.S. Cl.
CPC ...
12820617 ; 12820527 ; 12820529 ; 55DI / ; 55DI / ;
Abstract
A respirator cartridge having body, cover and filter media elements, and including a sealant dispersion member in one of the body or cover elements. The dispersion member directs the sealant material to the peripheral edge of the filter media without wetting the filtering surface of the media. An improved method for rotational molding filter media in/or for a filter assembly is also provided.