Patent US3965724A successfully refreshed from Google Patents.
US3965724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for calculating temperature and water vapor pressure
Assignee: Individual
•
Filing: 1974-12-06
•
Granted: 1976-06-29
•
Expires: 1994-12-06
Abstract
Abstract A device and method for determining the time-temperature history of a solid, liquid or gaseous medium where the temperature is expressed as a single value of the total temperature conditions to which the medium has been subjected over a given time, the invention involving use of a fluid tight container having a spherical cell of constant wall thickness and permeable to water vapor, the cell containing a dry desiccant and the container being filled with water. Similarly, the vapor pressure history of the medium may be determined by use of a second, non-containerized, spherical cell together with the containerized cell.
Inventors
- 👤 Wallace R. Ambrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:56
CPC Classifications
G; G01; G01K; G01K11/00; G01K3/00; G01K3/02; G01K3/04; G01N; G01N5/00; G01N5/02; G01N5/025
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
74 words
A device for use in determining the timetemperature history of a medium over a selected period of time, said device being in said medium at the time of measurement, such device comprising a fluid tight contaner, the interior of said container containing a hollow spherical cell of constant wall thickness, and permeable to water vapour, said cell containing a dry desiccant material in particulate form and said container being filled to capacity with water.
Claim 2
Independent Claim
74 words
A device for use in determining the timetemperature history of a medium over a selected period of time, said device being in said medium at the time of measurement, such device comprising a fluid tight contaner, the interior of said container containing a hollow spherical cell of constant wall thickness, and permeable to water vapour, said cell containing a dry desiccant material in particulate form and said container being filled to capacity with water.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1, 2. A device as claimed in claim 1, in which the hollow spherical cell is composed of a polycarbonate.
Claim 4
Dependent Claim
21 words
A device as claimed in claim 1, in which the desiccant in the hollow spherical cell is a molecular sieve material.
Claim 5
Dependent Claim
16 words
A device as claimed in claim 3, in which the molecular sieve material is zeolite 4A.
Claim 6
Independent Claim
97 words
A device for use in determining the timetemperature history of soil over a selected period of time, said device being used by being embedded in said soil, such device comprising a fluid tight container of cylindrical shape about 5cm. in height and about 3.5 cm. in diameter with a wall thickness of 2 to 3mm. containing a spherical cell composed of polycarbonate which is about 27mm. in external diameter and has a constant wall thickness of about 1mm., said cell being filled with zeolite 4A in particulate form and said container being filled to capacity with water.
Claim 7
Independent Claim
97 words
A device for use in determining the timetemperature history of soil over a selected period of time, said device being used by being embedded in said soil, such device comprising a fluid tight container of cylindrical shape about 5cm. in height and about 3.5 cm. in diameter with a wall thickness of 2 to 3mm. containing a spherical cell composed of polycarbonate which is about 27mm. in external diameter and has a constant wall thickness of about 1mm., said cell being filled with zeolite 4A in particulate form and said container being filled to capacity with water.
Claim 8
Dependent Claim
114 words
A method for determining the time-temperature history of a medium over a selected period of time, using the device of claim 1, such method comprising the steps of weighing the spherical cell before it is placed in the fluid tight container containing water, placing the fluid tight container containing the cell into the medium to be measured, at the end of the selected period of time, removing the fluid tight container, removing the sphere therefrom drying the outside of the sphere, weighing the sphere, calculating the weight increase of the sphere, comparing the weight increase with the standard scale and thus estimating the time-temperature history of the medijm over the selected period of time.
Claim 9
Independent Claim
99 words
A method for use in determining the time-temperature history of soil over a selected period of time comprising the step of weighing a spherical cell of constant wall thickness composed of polycarbonate and filled with a dry molecular sieve material, placing the sphere in a fluid tight container filled with water, sealing the container, putting the container in the soil at the desired depth, leaving the container in the soil until the selected period of time has expired, removing the container from the soil, recovering the spherical cell, weighing the spherical cell, calculating the increase in weight of the
Claim 10
Independent Claim
99 words
A method for use in determining the time-temperature history of soil over a selected period of time comprising the step of weighing a spherical cell of constant wall thickness composed of polycarbonate and filled with a dry molecular sieve material, placing the sphere in a fluid tight container filled with water, sealing the container, putting the container in the soil at the desired depth, leaving the container in the soil until the selected period of time has expired, removing the container from the soil, recovering the spherical cell, weighing the spherical cell, calculating the increase in weight of the
Claim 11
Dependent Claim
17 words
A method as claimed in claim 7 in which the dry molecular sieve material is zeolite 4A.
Claim 12
Dependent Claim
27 words
A method as claimed in claim 8 in which the spherical cell has an external diameter of 27 mm. and a wall thickness of about 1 mm.
Claim 13
Dependent Claim
45 words
Apparatus for use in determining the vapour pressure history of a medium over a selected time which comprises a device as claimed in claim 1 placed in close proximity to a non-containerised hollow spherical cell containing a dry desiccant, both being situated in the medium.
Claim 14
Dependent Claim
81 words
A method for use in determining the vapour pressure history of a medium which comprises the steps of placing the apparatus of claim 10 in the medium, after having weighed the non-containerised cell, removing the apparatus at the end of the selected time, calculating the weight increase of the non-containerised cell, calculating the temperature-time history of the medium from the weight increase of the containerised cell, and then estimating the vapour pressure of the medium by reference to a standard scale.
References Cited (Backward Citations)
US1698320A
Cited
US1601308A
Cited
US2105683A
Cited
US2196021A
Cited
US2283867A
Cited
US2552477A
Cited
US2792706A
Cited
US3055206A
Cited
US3235089A
Cited
US3142830A
Cited
US3256675A
Cited
US3463000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |