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:
Mar. 24, 1992
Filed:
Jan. 04, 1991
Applicant:
Inventors:
Arthur R Ferguson, Northbrook, IL (US);
Raymond Fundora, Chicago, IL (US);
Assignee:
Dacor Corporation, Northfield, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137 781 ; 13750542 ; 12820429 ;
Abstract
The first stage regulator of a two-stage underwater breathing apparatus utilizes an imperforate force transfer mechanism to automatically increase the rate at which breathing air is delivered from a high pressure supply to the second stage regulator as the diver descends in the water. The first stage regulator is sealed from the ambient by the imperforate force transfer mechanism which increases the resistance of the regulator to icing and corrosion and prevents particulates entrained in the ambient water from entering the regulator mechanism and interfering with its operation.