US3681992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weather instrument for indicating comfort temperature and relative humidity values
Assignee: General Time Corp
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Filing: 1969-11-21
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Granted: 1972-08-08
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Expires: 1989-11-21
Abstract
Abstract A weather instrument including a hygrometer and thermometer, and means operatively associated therewith for providing an indication of either the temperature or relative humidity required to maintain a predetermined temperature humidity index. In one embodiment, a cam-filament arrangement responds to the sensed ambient temperature to automatically provide an indication of the relative humidity required to maintain a predetermined temperature humidity index, and this indication is displayed in conjunction with the indication of the ambient relative humidity. In another embodiment, a cam-filament arrangement responds to the sensed relative humidity to automatically provide an indication of the temperature required to maintain a predetermined temperature humidity index, and this indication is displayed in conjunction with the indication of ambient temperature. A cam means is provided for adjusting the cam-filament system to provide indications of the temperature or relative humidity required to maintain different predetermined temperature humidity values at different seasons of the year.
Inventors
- 👤 Robert D Cofoid
- 👤 Clarence J Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:51
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A weather instrument comprising the combination of humidity responsive means for producing a first continuous output varying in accordance with the relative humidity of the ambient atmosphere, automatic calculating means responsive to said first continuous output for producing a second continuous output representing the comfort temperature required to maintain a predetermined temperature-humidity index, ambient temperature sensing and indicating means providing a continuous indication of the temperature of the ambient atmosphere, said ambient temperature indicating means being operatively associated with said comfort temperature indicating means for providing a continuous indication of the differential between said comfort temperature and the ambient temperature, and temperature-humidity selection means for automatically selecting different predetermined temperature-humidity index values, said predetermined values corresponding to different seasons of the year.
Claim 2
Dependent Claim
122 words
A weather instrument comprising the combination of humidity responsive means for producing a first continuous output varying in accordance with the relative humidity of the ambient atmosphere, automatic calculating means responsive to said first continuous output for producing a second continuous output representing the comfort temperature required to maintain a predetermined temperature-humidity index, ambient temperature sensing and indicating means providing a continuous indication of the temperature of the ambient atmosphere, said ambient temperature indicating means being operatively associated with said comfort temperature indicating means for providing a continuous indication of the differential between said comfort temperature and the ambient temperature, and temperature-humidity selection means for automatically selecting different predetermined temperature-humidity index values, said predetermined values corresponding to different seasons of the year.
Claim 3
Dependent Claim
181 words
A weather instrument comprising the combination of first sensing means responsive to changes in relative humidity for producing a first continuous output corresponding to RH, where RH represents the percent relative humidity of the ambient atmosphere expressed as a decimal fraction, second sensing means responsive to changes in temperature for producing a second continuous output corresponding to the temperature of the ambient atmosphere, automatic calculating means responsive to said first output for producing a third continuous output corresponding to THI-31.9(1-RH)/(0.45 + 0.55 RH) wherein THI is a predetermined comfort value for the temperature-humidity index of the ambient atmosphere, comfort temperature indication means responsive to said third output for providing a continuous indication of the comfort temperature required to maintain said predetermined comfort value for the temperature-humidity index, ambient temperature indicating means responsive to said second output for providing a continuous indication of the ambient temperature, and THI selection means having a plurality of different settings corresponding to different seasons of the year for automatically selecting different predetermined THI values in response to the setting of said selection means for different seasons.
Claim 4
Dependent Claim
181 words
A weather instrument comprising the combination of first sensing means responsive to changes in relative humidity for producing a first continuous output corresponding to RH, where RH represents the percent relative humidity of the ambient atmosphere expressed as a decimal fraction, second sensing means responsive to changes in temperature for producing a second continuous output corresponding to the temperature of the ambient atmosphere, automatic calculating means responsive to said first output for producing a third continuous output corresponding to THI-31.9(1-RH)/(0.45 + 0.55 RH) wherein THI is a predetermined comfort value for the temperature-humidity index of the ambient atmosphere, comfort temperature indication means responsive to said third output for providing a continuous indication of the comfort temperature required to maintain said predetermined comfort value for the temperature-humidity index, ambient temperature indicating means responsive to said second output for providing a continuous indication of the ambient temperature, and THI selection means having a plurality of different settings corresponding to different seasons of the year for automatically selecting different predetermined THI values in response to the setting of said selection means for different seasons.
Claim 5
Dependent Claim
39 words
A weather instrument as set forth in claim 2 wherein said comfort temperature indicating means and said ambient temperature means are operatively associated to provide a continuous indication of the differential between said comfort temperature and said ambient temperature.
Claim 6
Dependent Claim
160 words
A weather instrument comprising the combination of temperature responsive means for producing a first continuous output varying in accordance with the temperature of the ambient atmosphere, automatic calculating means responsive to said first continuous output for producing a second continuous output representing the comfort relative humidity required to maintain a predetermined temperature-humidity index in the ambient atmosphere, comfort relative humidity indicating means responsive to said second output for providing a continuous indication of said comfort relative humidity required to maintain said predetermined temperature-humidity index, ambient relative humidity sensing and indication means providing a continuous indication of the relative humidity of the ambient atmosphere, said ambient relative humidity indicating means being operatively associated with said comfort relative humidity indicating means for providing a continuous indication of the differential between said comfort relative humidity and the ambient relative humidity, and temperature humidity selection means for automatically selecting different predetermined temperature-humidity index values, said predetermined values corresponding to different seasons of the year.
Claim 7
Dependent Claim
160 words
A weather instrument comprising the combination of temperature responsive means for producing a first continuous output varying in accordance with the temperature of the ambient atmosphere, automatic calculating means responsive to said first continuous output for producing a second continuous output representing the comfort relative humidity required to maintain a predetermined temperature-humidity index in the ambient atmosphere, comfort relative humidity indicating means responsive to said second output for providing a continuous indication of said comfort relative humidity required to maintain said predetermined temperature-humidity index, ambient relative humidity sensing and indication means providing a continuous indication of the relative humidity of the ambient atmosphere, said ambient relative humidity indicating means being operatively associated with said comfort relative humidity indicating means for providing a continuous indication of the differential between said comfort relative humidity and the ambient relative humidity, and temperature humidity selection means for automatically selecting different predetermined temperature-humidity index values, said predetermined values corresponding to different seasons of the year.
Claim 8
Dependent Claim
184 words
A weather instrument comprising the combination of first sensing means responsive to changes in temperature for producing a first continuous output corresponding to TD, where TD represents the temperature in *F of the ambient atmosphere, second sensing means responsive to changes in relative humidity for producing a second continuous output corresponding to the relative humidity of the ambient atmosphere, automatic calculating means responsive to said first output for producing a third continuous output corresponding to (1- (THI - TD)/(31.9 -0.55 TD)) wherein THI is a predetermined comfort value for the temperature-humidity index of the ambient atmosphere, comfort relative humidity indicating means responsive to said third output for providing a continuous indication of the comfort relative humidity required to maintain said predetermined comfort value for the temperature-humidity index, and ambient relative humidity indicating means responsive to said second output for providing a continuous indication of the ambient relative humidity and THI selection means having a plurality of different settings corresponding to different seasons of the year for automatically selecting different predetermined THI values in response to the setting of said selection means for different seasons.
Claim 9
Dependent Claim
184 words
A weather instrument comprising the combination of first sensing means responsive to changes in temperature for producing a first continuous output corresponding to TD, where TD represents the temperature in *F of the ambient atmosphere, second sensing means responsive to changes in relative humidity for producing a second continuous output corresponding to the relative humidity of the ambient atmosphere, automatic calculating means responsive to said first output for producing a third continuous output corresponding to (1- (THI - TD)/(31.9 -0.55 TD)) wherein THI is a predetermined comfort value for the temperature-humidity index of the ambient atmosphere, comfort relative humidity indicating means responsive to said third output for providing a continuous indication of the comfort relative humidity required to maintain said predetermined comfort value for the temperature-humidity index, and ambient relative humidity indicating means responsive to said second output for providing a continuous indication of the ambient relative humidity and THI selection means having a plurality of different settings corresponding to different seasons of the year for automatically selecting different predetermined THI values in response to the setting of said selection means for different seasons.
Claim 10
Dependent Claim
44 words
A weather instrument as set forth in claim 5 wherein said comfort relative humidity indicating means and said ambient relative humidity indicating means are operatively associated to provide a continuous indication of the differential between said comfort relative humidity and said ambient relative humidity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |