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:
Aug. 07, 1979
Filed:
Jan. 31, 1978
Applicant:
Inventor:
Thomas Orr, Warsash, Southampton, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128666 ; 128690 ;
Abstract
A heartbeat rate monitor has a light source, powered by a rechargeable battery, for transilluminating skin tissue. A semiconductor detector which produces an output signal in dependence on light originating from the light source and reflected from the skin tissue, and hence on changes in arterial blood flow, is additionally used, on exposure to ambient light, to produce a current for recharging the battery.