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. 19, 2000
Filed:
Apr. 28, 1998
Applicant:
Inventor:
Keith E Fecteau, Wilbraham, MA (US);
Assignee:
Cabot Safety Intermediate Corporation, Southbridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ;
U.S. Cl.
CPC ...
12820527 ; 12820529 ; 12820616 ; 12820619 ;
Abstract
The filter medium of the present invention includes a pleated filter layer and a flat filter layer adjacent to the pleated filter layer. Both the pleated filter layer and the flat filter layer may contain a thermoplastic material allowing the filter layers to be joined using ultrasonic welding or heat sealing and facilitating manufacturing. The filter medium has a small height which makes it appropriate for use in flat fold respirators and flat filters.