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. 20, 1976
Filed:
Jul. 03, 1974
Ralph B Shamlian, San Francisco, CA (US);
Ashley J Hollingsworth, Atherton, CA (US);
Farallon Industries, Inc., Belmont, CA (US);
Abstract
A decompression analog computer and indicator includes an ambient pressure sensing chamber exposed to hydrostatic pressure as experienced by the diver. The pressure in sensing chamber produces a flow of fluid between the sensing chamber and a pair of parallel connected second chambers via the intermediary of first and second diffusion membranes introducing a delay to simulate different tissues of the body. Each of the second chambers has a movable wall portion operatively connected to a spring biased pressure responsive indicating piston. The indicating pistons move to and fro in a track overlying at indicating scale visible to the diver. The indicators indicate uptake and release of nitrogen by different tissues within the body and indicate to the diver when decompression is necessary.