US3805589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching dilatometer
Assignee: Theta Industries Inc
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Filing: 1972-11-15
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Granted: 1974-04-23
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Expires: 1992-11-15
Abstract
Abstract In a dilatometer, of the type having a linear, variable, differential, transformer and push rod means responsive thereto, means are provided for rapidly heating and cooling a test sample which is freely suspended between mounting rods. The linear, variable, differential transformer includes individual, cantilevered spring support means and a ball anvil that provides the coupling means between the transformer and a micrometer that is used for calibration and zeroing purposes. The mounting rods for the test sample are outside the heating zone and do not expand themselves so that no correction for measuring system expansion is required. Structure for inside and outside quenching of the test sample is provided. In one embodiment of the invention a heating coil positioned around the test sample is provided in combination with a quenching head. The aforementioned Abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.
Inventors
- 👤 G Clusener
- 👤 I Kurth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:22
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
157 words
A quenching dilatometer for changing the thermal environment of the test sample, said dilatometer comprising the combination of: a. a linear, variable, differential transformer including coil means and a core freely floating therein; b. first and second cantilevered spring means for independently supporting said coil means and said core with respect to each other; c. means for heating the air only in the vicinity immediately surrounding the test sample; d. means for supplying a cooling medium to the vicinity immediately surrounding the test sample; and e. means for supporting the test sample adjacent said dilAtometer, said supporting means comprising a first elongated tube having one end in abutment with one surface of the test sample and a second end in fluid communication with said means for supplying a cooling medium, there being further included a second tube having one end in abutment with another surface of the test sample and a second end coupled to said core.
Claim 2
Dependent Claim
157 words
A quenching dilatometer for changing the thermal environment of the test sample, said dilatometer comprising the combination of: a. a linear, variable, differential transformer including coil means and a core freely floating therein; b. first and second cantilevered spring means for independently supporting said coil means and said core with respect to each other; c. means for heating the air only in the vicinity immediately surrounding the test sample; d. means for supplying a cooling medium to the vicinity immediately surrounding the test sample; and e. means for supporting the test sample adjacent said dilAtometer, said supporting means comprising a first elongated tube having one end in abutment with one surface of the test sample and a second end in fluid communication with said means for supplying a cooling medium, there being further included a second tube having one end in abutment with another surface of the test sample and a second end coupled to said core.
Claim 3
Dependent Claim
24 words
The dilatometer in accordance with claim 1 wherein the second end of said second tube includes outlet orifice means for effluxing the cooling medium.
Claim 4
Dependent Claim
21 words
The dilatometer in accordance with claim 1 wherein said heating means comprises an induction heating coil wound about the test sample.
Claim 5
Dependent Claim
22 words
The dilatometer in accordance with claim 3 wherein said coil is tubular and means are provided for circulating a cooling fluid therethrough.
Claim 6
Dependent Claim
26 words
The dilatometer in accordance with claim 3 further including a quenching head adapted to be positioned about the test sample, said quenching head enclosing the coil.
Claim 7
Dependent Claim
21 words
The dilatometer in accordance with claim 1 further including a thermocouple adapted to be placed in contact with the test sample.
Claim 8
Dependent Claim
20 words
The dilatometer in accordance with claim 1 wherein said first tube is axially displaceable for supporting different size test samples.
Claim 9
Dependent Claim
49 words
The dilatometer in accordance with claim 7 wherein there is further included a base member for receiving the second end of said first tube, said cooling means comprising a passageway in said base member that is in fluid communication with said first tube and a source of cooling medium.
Claim 10
Dependent Claim
19 words
The dilatometer in accordance with claim 1 wherein said second tube includes heat sink means intermediate the ends thereof.
Claim 11
Dependent Claim
18 words
The dilatometer in accordance with claim 9 wherein said heat sink means comprises at least one metallic disc.
Claim 12
Dependent Claim
18 words
The dilatometer in accordance with claim 9 wherein said heat sink means comprises a plurality of metallic discs.
Claim 13
Dependent Claim
20 words
The dilatometer in accordance with claim 9 wherein said heat sink means comprises orifice means for effluxing the cooling medium.
Claim 14
Dependent Claim
20 words
The dilatometer in accordance with claim 1 further including heat insulation means adapted to be positioned about the test sample.
Claim 15
Dependent Claim
18 words
The dilatometer in accordance with claim 13 wherein said heat insulation means comprises a zirconium oxide felt sleeve.
Claim 16
Dependent Claim
33 words
The dilatometer in accordance with claim 1 wherein there is further included a sleeve member positioned intermediate said one end of said second tube and the portion of the test sample adjacent thereto.
Claim 17
Dependent Claim
21 words
The dilatometer in accordance with claim 15 wherein said sleeve member includes at least one transverse slot through the wall thereof.
Claim 18
Dependent Claim
21 words
The dilatometer in accordance with claim 15 wherein said sleeve member includes a plurality of transverse slots through the wall thereof.
Claim 19
Dependent Claim
16 words
The dilatometer in accordance with claim 15 wherein said sleeve member is made of sintered alumina.
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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |