Patent US4426160A successfully refreshed from Google Patents.
US4426160A
Expired / Lapsed
US
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Device for measuring the deformation of a material under the influence of heat and its application to the determination of the wetting power of pitches
Assignee: HUILES GOUDRONS ET DERIVES TOUR AURORE
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Filing: 1981-12-29
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Granted: 1984-01-17
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Expires: 2001-12-29
Abstract
Abstract A method and apparatus for optically making physical measurements of materials which deform upon application of heat thereto. The device comprises a source of light, an at least partly transparent chamber having a heating source which can be programmed to operate as a function of time, and with a porous support designed to support a deformable material within the chamber. A photo-electric receiver 5 and an optical lens 7 are also provided for imaging of the material during deformation on the photo-electric receiver. In order to perform the imaging, the source of light, the porous support, the photo-electric receiver and the optical lens 7 are optically aligned. In a specific application, the apparatus can be used to determine the wetting power of pitches.
Inventors
- 👤 Pierre Couderc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:25
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/44; G01N33/442; G01N25/00; G01N25/02; G01N25/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
138 words
An apparatus for measuring deformation of a material under the influence of heat, comprising: light source means for providing a beam of light; chamber means for receiving a deformable material therein, said chamber means being at least partially transparent for allowing light to pass at least through one wall thereof, and including porous support means for supporting said deformable material thereon, and heating means adapted to operate as a function of time for heating and causing deformation of a deformable material in said chamber means; photo-electric receiving means; and first optical lens means for forming an image of the deformable material in said chamber means on said photo-electric receiving means, wherein said light source means, porous support means, first optical lens means, and photo-electric receiving means are aligned optically for forming said image on said photo-electric receiving means.
Claim 2
Independent Claim
138 words
An apparatus for measuring deformation of a material under the influence of heat, comprising: light source means for providing a beam of light; chamber means for receiving a deformable material therein, said chamber means being at least partially transparent for allowing light to pass at least through one wall thereof, and including porous support means for supporting said deformable material thereon, and heating means adapted to operate as a function of time for heating and causing deformation of a deformable material in said chamber means; photo-electric receiving means; and first optical lens means for forming an image of the deformable material in said chamber means on said photo-electric receiving means, wherein said light source means, porous support means, first optical lens means, and photo-electric receiving means are aligned optically for forming said image on said photo-electric receiving means.
Claim 3
Dependent Claim
40 words
An apparatus according to claim 1 further comprising second optical lens means positioned between said light source means and said chamber means for focusing light rays emitted from said light source means to form a beam of parallel light rays.
Claim 4
Dependent Claim
19 words
An apparatus according to claim 1 or 2 wherein said light source means is positioned within said chamber means.
Claim 5
Dependent Claim
46 words
An apparatus according to claim 1 or 2, wherein said means making up said apparaus are not linearly aligned and further comprising reflective means positioned to be in the path of the light beam in a manner for optically aligning said means making up said apparatus.
Claim 6
Dependent Claim
15 words
An apparatus according to claim 1 wherein said photo-electric receiving means comprises a photomultiplier tube.
Claim 7
Independent Claim
16 words
An apparatus according to clain 1 wherein said photo-electric receiving means comprises a bar of microphotodiodes.
Claim 8
Independent Claim
16 words
An apparatus according to clain 1 wherein said photo-electric receiving means comprises a bar of microphotodiodes.
Claim 9
Dependent Claim
12 words
An apparatus according to claim 6 wherein said microphotodiodes are vertically arranged.
Claim 10
Dependent Claim
42 words
An apparatus according to claim 1 wherein said photo-electric receiving means is adapted to be transversely movable with respect to the light beams from the light source means for instantaneously scanning the entire image of the deformable material on the support means.
Claim 11
Dependent Claim
21 words
An apparatus according to claim 1 wherein said porous support means comprises a bed of coke powder contained in a boat.
Claim 12
Dependent Claim
16 words
An apparatus according to claim 1 wherein said porous support means comprises a sintered glass pellet.
Claim 13
Dependent Claim
15 words
An apparatus according to claim 9 wherein said coke powder has a porosity of 0.1-0.9.
Claim 14
Dependent Claim
18 words
An apparatus according to claim 10 wherein said sintered glass pellet has a pore diameter of 10-200 μm.
Claim 15
Dependent Claim
18 words
An apparatus according to claim 9 wherein said coke powder has a particle size distribution of 10-1000 μm.
Claim 16
Dependent Claim
41 words
A method of use of the apparatus of claim 1 comprising providing a pitch as the deformable material on the porous support means for determining the wetting power thereof by heating said pitch within said chamber means for causing deformation thereof.
Claim 17
Dependent Claim
108 words
A method of use of the apparatus of claim 1 comprising heating a pitch material as the deformable material on the porous support means to cause deformation thereof as a function of time and temperature; transmitting a beam of light in a manner as to be at least partially blocked by said deformable material and porous support means during deformation of the material for forming an optical image on said photo-electric receiving means; and recording the image transmitted to said photo-electric receiving means of the material undergoing deformation as a function of time and temperature whereby the wetting powder of the material can be determined from said image.
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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |