Blood flow detector

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Description

FIG. 1 is the front end view showing the blood flow detector,

FIG. 2 is the rear end view thereof,

FIG. 3 is the side view thereof,

FIG. 4 is the top plan view thereof and;

FIG. 5 is a perspective front view thereof showing in dotted lines, for illustration only, the attachment of the device to a stethoscope.

Referenced Cited
U.S. Patent Documents
D214755 July 1969 McPhee
D223122 March 1972 King et al.
D233569 November 1974 Miller
D236190 August 1975 Wibring
D243717 March 15, 1977 Edmark et al.
D254569 March 25, 1980 Moffat et al.
2921585 January 1960 Schumann
3182129 May 1965 Clark et al.
Other references
  • "The American Journal of Medical Electronics", Jul.-Sep. 1964, pp. 192-198, See FIG. 5 on p. 198.
Patent History
Patent number: D262738
Type: Grant
Filed: Mar 5, 1979
Date of Patent: Jan 19, 1982
Assignee: Hayashi Denki Company Ltd. (Kanagawa)
Inventors: Masuo Sugawara (Tokorazawa), Hiroji Matsumoto (Kawasaki)
Primary Examiner: T. Tung
Application Number: 6/17,341
Classifications
Current U.S. Class: D24/17; D24/23; D10/96103
International Classification: 20402;