US3680357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilatometer
Assignee: Individual
•
Filing: 1970-09-21
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Granted: 1972-08-01
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Expires: 1990-09-21
Abstract
Abstract Improved mounting means for the push rod and the linear variable differential transformer of a dilatometer are provided by individual, cantilevered spring means. A ball anvil provides coupling means between the transformer and a micrometer that is used for calibration and zeroing purposes. The core of the transformer, the push rod and the material under test are mounted in tandem.
Inventors
- 👤 Gerhard R Clusener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:06
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/16; G01B; G01B7/00; G01B7/16; G01B7/24
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
228 words
A dilatometer for measuring the thermal properties of a test sample, said dilatometer comprising: a. a linear variable differential transformer; b. a core freely floating in said linear variable differential transformer; c. a tandemly positioned push rod secured at a first end to said core, the second end of said push rod being adapted to abut the sample under test; d. first cantilevered spring means for supporting said linear variable, differential transformer, said first cantilevered spring means comprising a pair of leaves, each said leaf including first and second pairs of legs, said second pair of legs being rigidly secured to said linear variable, differential transformer, said leaves of said first cantilevered spring means being positioned at opposite ends of said linear variable differential transformer; e. second cantilevered spring means for supporting said core and said push rod independently of said linear variable, differential transformer, said second cantilevered spring means comprising a pair of leaves, each said leaf including a first and second pair of legs, said second pair of legs being secured to said push rod; f. means for mounting said first and said second cantilevered spring means, said first pair of legs of each said leaf of said first and said second cantilevered spring means being rigidly secured to said mounting means; and g. calibrating means coupled to a portion of said linear variable, differential transformer.
Claim 2
Dependent Claim
228 words
A dilatometer for measuring the thermal properties of a test sample, said dilatometer comprising: a. a linear variable differential transformer; b. a core freely floating in said linear variable differential transformer; c. a tandemly positioned push rod secured at a first end to said core, the second end of said push rod being adapted to abut the sample under test; d. first cantilevered spring means for supporting said linear variable, differential transformer, said first cantilevered spring means comprising a pair of leaves, each said leaf including first and second pairs of legs, said second pair of legs being rigidly secured to said linear variable, differential transformer, said leaves of said first cantilevered spring means being positioned at opposite ends of said linear variable differential transformer; e. second cantilevered spring means for supporting said core and said push rod independently of said linear variable, differential transformer, said second cantilevered spring means comprising a pair of leaves, each said leaf including a first and second pair of legs, said second pair of legs being secured to said push rod; f. means for mounting said first and said second cantilevered spring means, said first pair of legs of each said leaf of said first and said second cantilevered spring means being rigidly secured to said mounting means; and g. calibrating means coupled to a portion of said linear variable, differential transformer.
Claim 3
Dependent Claim
32 words
The dilatometer in accordance with claim 1 wherein said mounting means comprises a plate, a carriage secured to said plate, a post mounted in said carriage and a pedestal supporting said post.
Claim 4
Dependent Claim
31 words
The dilatometer in accordance with claim 2 further including means for adjusting the position of said plate on said post so as to vary the force applied to the test sample.
Claim 5
Dependent Claim
19 words
The dilatometer in accordance with claim 2 wherein said post is a metal having a low coefficient of expansion.
Claim 6
Dependent Claim
18 words
The dilatometer in accordance with claim 4 further including a passageway in said post for a circulating fluid.
Claim 7
Dependent Claim
41 words
The dilatometer in accordance with claim 1 wherein said first pair of legs are bifurcated, one portion of said bifurcated legs being secured to said mounting means, the other portion of said bifurcated legs being integral with said rEspective second legs.
Claim 8
Dependent Claim
45 words
The dilatometer in accordance with claim 1 wherein one end of said core is rigidly secured to one of said second legs, the other of said second legs being captured between said second end of said core and the confronting end of said push rod.
Claim 9
Dependent Claim
52 words
The dilatometer in accordance with claim 1 wherein said push rod is U-shaped, said second end of said push rod including a first seat for the sample under test, there being further included a cooperating second seat for the sample under test, said second seat being fixed relative to said first seat.
Claim 10
Dependent Claim
27 words
The dilatometer in accordance with claim 1 wherein the portion of said push rod in abutment with the sample under test is surrounded by a support sleeve.
Claim 11
Dependent Claim
21 words
The dilatometer in accordance with claim 9 wherein said sleeve is further surrounded by a hollow body containing a cooling medium.
Claim 12
Dependent Claim
14 words
The dilatometer in accordance with claim 1 wherein said calibrating means is a micrometer.
Claim 13
Dependent Claim
33 words
The dilatometer in accordance with claim 11 further including a ball anvil interposed between the free end of the anvil of said micrometer and the said portion of said linear variable differential transformer.
Claim 14
Dependent Claim
41 words
The dilatometer in accordance with claim 1 further including a housing enclosing all the structure thereof except the portion of said push rod that is in abutment with the sample and means for coupling said housing to a source of vacuum.
Claim 15
Dependent Claim
58 words
The dilatometer in accordance with claim 1 further including torsion means, coupling means extending between the sample under test and said torsion means whereby a force applied to the test sample causes a twisting of said torsion means and means responsive to the twisting of said torsion means for visually indicating the force applied to the test sample.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |