Patent US3870034A successfully refreshed from Google Patents.
US3870034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Personal galvanic skin response monitoring instrument
Assignee: STOELTING COMPANY AN ILL CORP
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Filing: 1973-03-26
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Granted: 1975-03-11
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Expires: 1993-03-26
Abstract
Abstract A device adapted to be worn on the wrist is provided for conveniently measuring the galvanic skin response of the wearer as a means for monitoring the activity of an individual''s nervous system. The instrument includes a case provided with straps or the like for wear upon the wrist much like a wrist watch and houses an oscillator circuit, a battery, a sound emitting device and a pair of spaced electrodes located on opposite ends of the casing so that the wearer may conveniently touch the two electrodes with two fingers. The skin resistance is thereby measured and converted into a variable pitch audible signal and/or a flashing light as an indication of the individual''s tension level.
Inventors
- 👤 J Michael James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:36
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/48; A61B5/486; A61B5/02; A61B5/024; A61B5/02438; A61B5/05; A61B5/053; A61B5/0531; Y; Y10; Y10S; Y10S128/00; Y10S128/905
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
218 words
A device for indicating changes in electrical resistance in the skin of a human subject, comprising a. a casing of a size and shape adapted to be worn on a wrist of said subject and having an inner and an outer face, b. wrist band means connected to said casing for detachably engaging the inner face of said casing to said wrist, c. a pair of exposed electrodes mounted in fixed spaced relation to the outer face of said casing and adapted to be touched by two different fingers of said subject, said electrodes being substantially flush with the outer face of said casing and of a size and shape to be covered by an average fingertip d. a source of electrical power mounted to said casing and connected to said electrodes for establishing a potential difference between said electrodes, e. first means responsive to the current flowing between the electrodes for deriving a signal related to the skin resistance of said subject, f. a variable frequency oscillator mounted to said casing, g. second means responsive to the derived signal for controlling the frequency of said oscillator whereby the frequency of said oscillator will vary with changes in the skin resistance of said subject, and, h. third means coupled to said oscillator for indicating changes in oscillator frequency.
Claim 2
Independent Claim
218 words
A device for indicating changes in electrical resistance in the skin of a human subject, comprising a. a casing of a size and shape adapted to be worn on a wrist of said subject and having an inner and an outer face, b. wrist band means connected to said casing for detachably engaging the inner face of said casing to said wrist, c. a pair of exposed electrodes mounted in fixed spaced relation to the outer face of said casing and adapted to be touched by two different fingers of said subject, said electrodes being substantially flush with the outer face of said casing and of a size and shape to be covered by an average fingertip d. a source of electrical power mounted to said casing and connected to said electrodes for establishing a potential difference between said electrodes, e. first means responsive to the current flowing between the electrodes for deriving a signal related to the skin resistance of said subject, f. a variable frequency oscillator mounted to said casing, g. second means responsive to the derived signal for controlling the frequency of said oscillator whereby the frequency of said oscillator will vary with changes in the skin resistance of said subject, and, h. third means coupled to said oscillator for indicating changes in oscillator frequency.
Claim 3
Independent Claim
218 words
A device for indicating changes in electrical resistance in the skin of a human subject, comprising a. a casing of a size and shape adapted to be worn on a wrist of said subject and having an inner and an outer face, b. wrist band means connected to said casing for detachably engaging the inner face of said casing to said wrist, c. a pair of exposed electrodes mounted in fixed spaced relation to the outer face of said casing and adapted to be touched by two different fingers of said subject, said electrodes being substantially flush with the outer face of said casing and of a size and shape to be covered by an average fingertip d. a source of electrical power mounted to said casing and connected to said electrodes for establishing a potential difference between said electrodes, e. first means responsive to the current flowing between the electrodes for deriving a signal related to the skin resistance of said subject, f. a variable frequency oscillator mounted to said casing, g. second means responsive to the derived signal for controlling the frequency of said oscillator whereby the frequency of said oscillator will vary with changes in the skin resistance of said subject, and, h. third means coupled to said oscillator for indicating changes in oscillator frequency.
Claim 4
Independent Claim
218 words
A device for indicating changes in electrical resistance in the skin of a human subject, comprising a. a casing of a size and shape adapted to be worn on a wrist of said subject and having an inner and an outer face, b. wrist band means connected to said casing for detachably engaging the inner face of said casing to said wrist, c. a pair of exposed electrodes mounted in fixed spaced relation to the outer face of said casing and adapted to be touched by two different fingers of said subject, said electrodes being substantially flush with the outer face of said casing and of a size and shape to be covered by an average fingertip d. a source of electrical power mounted to said casing and connected to said electrodes for establishing a potential difference between said electrodes, e. first means responsive to the current flowing between the electrodes for deriving a signal related to the skin resistance of said subject, f. a variable frequency oscillator mounted to said casing, g. second means responsive to the derived signal for controlling the frequency of said oscillator whereby the frequency of said oscillator will vary with changes in the skin resistance of said subject, and, h. third means coupled to said oscillator for indicating changes in oscillator frequency.
Claim 5
Dependent Claim
14 words
A device according to claim 1 wherein said third means includes sound generating means.
Claim 6
Dependent Claim
14 words
A device according to claim 1 wherein said third means includes light producing means.
Claim 7
Dependent Claim
16 words
A device according to claim 3 wherein said light producing means is a light emitting diode.
Claim 8
Dependent Claim
20 words
A device according to claim 1 including a high gain pre-amplifier connected between said oscillator and one of said electrodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |