Patent US1969313A successfully refreshed from Google Patents.
Patent US3688558A successfully refreshed from Google Patents.
US3688558A
Expired / Lapsed
US
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Estimation of thermal feeling intensity on human skin
Assignee: Automobiles Peugeot SA
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Filing: 1970-09-16
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Granted: 1972-09-05
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Expires: 1990-09-16
Abstract
Abstract A method of determining the intensity of the thermal feelings which would be produced on the human skin in direct contact with different materials. The material in question is heated or cooled to a predetermined temperature and a device having a surface with characteristics of conductively and heat capacity etc simulating that of human skin is brought into contact therewith. A thermal transducer within the device provides and indication of the intensity of feeling which the material would produce if it came in contact with human skin.
Inventors
- 👤 Michel Tixier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:45
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/18
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
142 words
A method of indirectly determining the intensity of the thermal feeling produced on the skin in direct contact with a sample material comprising the steps of a. bringing the temperature of the sample material to be tested to a temperature approximately that of actual use, b. bringing the temperature of a casing having a bottom portion composed of a composition simulating the surface layers of the skin to the physiological temperature of the skin area expected to contact said sAmple material, c. placing said sample material on a supporting surface, d. placing the bottom of said casing on said sample material, and e. measuring the change in temperature of the bottom portion of said casing, said temperature change being a measure of the intensity of the thermal feeling which would be produced on the skin in direct contact with said sample material.
Claim 2
Independent Claim
142 words
A method of indirectly determining the intensity of the thermal feeling produced on the skin in direct contact with a sample material comprising the steps of a. bringing the temperature of the sample material to be tested to a temperature approximately that of actual use, b. bringing the temperature of a casing having a bottom portion composed of a composition simulating the surface layers of the skin to the physiological temperature of the skin area expected to contact said sAmple material, c. placing said sample material on a supporting surface, d. placing the bottom of said casing on said sample material, and e. measuring the change in temperature of the bottom portion of said casing, said temperature change being a measure of the intensity of the thermal feeling which would be produced on the skin in direct contact with said sample material.
Claim 3
Dependent Claim
26 words
The method defined by claim 1 wherein the sample material to be tested is brought to the temperature of actual use by heating said sample material.
Claim 4
Dependent Claim
23 words
The method defined by claim 1 wherein the casing is brought to the physiological temperature of the skin area by heating said casing.
Claim 5
Dependent Claim
45 words
The method defined by claim 1 which further comprises the step of exerting pressure on said sample material with the bottom of said casing, said pressure being substantially equivalent to that which would be exerted by the body of a subject on said sample material.
Claim 6
Dependent Claim
16 words
The method defined by claim 4 wherein said pressure is approximately 40 grams per square centimeter.
Claim 7
Dependent Claim
28 words
The method defined by claim 1 which further comprises the step of lining the casing with a lining material having thermal characteristics similar to these of the epiderm.
Claim 8
Dependent Claim
31 words
The method defined by claim 1 which further comprises the step of coating said sample material to reduce heat resistance during the period of contact with the bottom of said casing.
Claim 9
Dependent Claim
17 words
The method defined by claim 7 where said sample is coated with a silicone - containing grease.
Claim 10
Independent Claim
118 words
A device for indirectly determining the intensity of the thermal feeling produced on the skin in direct contact with a sample material comprising a. a casing encompassing a predetermined volume containing a mass having thermal properties similar to those of the epiderm, said casing having a bottom portion with a groove formed therein on the internal surface thereof, and b. a thermoelectric device located within said groove, said sample material being placed in contact with the outer surface of the bottom portion of said casing, the change in temperature measured by said thermoelectric device being a measure of the intensity of the thermal feeling which would be produced on the skin in direct contact with said sample material.
Claim 11
Independent Claim
118 words
A device for indirectly determining the intensity of the thermal feeling produced on the skin in direct contact with a sample material comprising a. a casing encompassing a predetermined volume containing a mass having thermal properties similar to those of the epiderm, said casing having a bottom portion with a groove formed therein on the internal surface thereof, and b. a thermoelectric device located within said groove, said sample material being placed in contact with the outer surface of the bottom portion of said casing, the change in temperature measured by said thermoelectric device being a measure of the intensity of the thermal feeling which would be produced on the skin in direct contact with said sample material.
Claim 12
Dependent Claim
27 words
The device defined by claim 9 wherein the mass encompassed by said casing and having properties similar to those of the epiderm consists of an organic gel.
Claim 13
Dependent Claim
16 words
The device defined by claim 10 wherein said organic gel is comprised of agar - agar
Claim 14
Dependent Claim
33 words
The device defined by claim 10 wherein an orifice is provided in the side wall of said casing to permit the insertion of a thermometer into the inner mass of said organic gel.
Claim 15
Dependent Claim
18 words
The device defined by claim 9 wherein the bottom portion of said casing consists of a glass plate.
References Cited (Backward Citations)
US2769334A
Cited
US2998720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |