Fingertip pulse wave sensor
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United States of America Patent
Stats
-
Nov 20, 1990
Grant Date -
N/A
app pub date -
Mar 28, 1989
filing date -
Sep 24, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fingertip pulse wave sensor includes a fingertip cushion supporting member having a fingertip cushion supporting surface, and a nail supporting member having a nail supporting surface which is disposed in opposed relationship with the fingertip cushion supporting surface at an interval smaller than the standard thickness of fingertips. Either of the fingertip cushion supporting member of the nail supporting member is fixed, and the other of the fingertip cushion supporting member and the nail supporting member is hinged. The hinged fingertip cushion supporting member or nail supporting member is urged in the direction in which they are moved to each other by an elastic body which is capable of applying a substantially fixed amount of pressure with respect to the variations in the pivot stroke caused by the variations in the thickness of the fingertips resting on the fingertip cushion supporting member. The fingertip pulse wave sensor also includes a light-emitting element which is disposed on either of the fingertip cushion supporting surface and the nail supporting surface, and a light-receiving element which is disposed on the other of the fingertip cushion supporting surface and the nail supporting surface.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MISAWA HOMES INSTITUTE OF RESEARCH AND DEVELOPMENT;MISAWA HOMES INSTITUTE OF RESEARCH AND DEVELOPMENT, NO. 4-5, TAKAIDOHIGASHI 2-CHOME, SUGINAMI-KU, TOKYO, JAPAN
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hasebe, Noboru | Tokyo, JP | 2 | 386 |
Ito, Shoji | Tokyo, JP | 68 | 1159 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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