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:
Jun. 29, 1993
Filed:
Jul. 11, 1991
Applicant:
Inventor:
R D Forsgren, Minneapolis, MN (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ; A62B / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
12820125 ; 12820617 ; 55497 ; 55502 ; 55504 ; 55521 ; 55DI / ; 210450 ; 210451 ; 210446 ;
Abstract
A respirator cartridge having a housing, a replaceable filter and a cover is provided. The cartridge is sealed by a lip on the filter frame and sealing rings on the housing and cover. The cover is releasably connected to the housing by protuberances on the cover which slide along ramp-up lock devices on the housing when the cover is turned, compressing the filter frame and sealing the cartridge.