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:
Jan. 24, 1989
Filed:
Mar. 28, 1988
Applicant:
Inventor:
Ralph H Lewis, Lakeport, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ;
U.S. Cl.
CPC ...
12820624 ; 12820621 ; 12820626 ; 12820525 ; 12820027 ;
Abstract
A face mask is disclosed for enclosing the nose and mouth of humans and defining an air chamber from which a human may inhale and exhale gases. The mask comprises an inflatable bladder that encircles the air chamber, the bladder having elliptical perforations that are spaced therearound to emit air from the bladder into direct surface contact with the face of the person wearing the mask. Means is also provided for introducing air into both the bladder and the air chamber.