Patent US3877290A successfully refreshed from Google Patents.
US3877290A
Expired / Lapsed
US
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Dilatometer
Assignee: Dow Chemical Co
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Filing: 1973-03-05
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Granted: 1975-04-15
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Expires: 1993-03-05
Abstract
Abstract A dilatometer comprising a fixed beam and a movable beam which is pivotally mounted with respect to the fixed beam. The sample to be measured fits between one set of beam ends. The other end of the movable beam is coupled to the movable core of a differential transformer which provides an output signal which is a function of beam movement. The sample holding beam ends are enclosed in an insulated housing. The beams are disposed horizontally.
Inventors
- 👤 Chin Haun Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:38
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/16; G01N; G01N25/00; G01N25/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
Dilatometer apparatus comprising an elongated horizontally disposed fixed beam and an elongated horizontally disposed movable beam, said movable beam being pivotally mounted between its ends with respect to said fixed beam, a differential transformer having a body part and a movable core part, said body part being fixed positionally with respect to said fixed beam and said movable core part being coupled to an end of said movable beam, means for retaining by compressive force a sample to be tested between the adjacent ends of said beams which are remote from said transformer, said ends which are remote from said transformer being enclosed in a temperature controllable housing.
Claim 2
Dependent Claim
108 words
Dilatometer apparatus comprising an elongated horizontally disposed fixed beam and an elongated horizontally disposed movable beam, said movable beam being pivotally mounted between its ends with respect to said fixed beam, a differential transformer having a body part and a movable core part, said body part being fixed positionally with respect to said fixed beam and said movable core part being coupled to an end of said movable beam, means for retaining by compressive force a sample to be tested between the adjacent ends of said beams which are remote from said transformer, said ends which are remote from said transformer being enclosed in a temperature controllable housing.
Claim 3
Dependent Claim
13 words
Apparatus in accordance with claim 1, wherein said beams are made of Alundum.
Claim 4
Dependent Claim
22 words
Apparatus in accordance with claim 1, wherein said movable beam is pivotally mounted on a fix positioned element extending between said beams.
Claim 5
Dependent Claim
19 words
Apparatus in accordance with claim 1, wherein said housing is a multisection housing having temperature control means coupled thereto.
References Cited (Backward Citations)
US2559789A
Cited
US2656712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |