Patent US3594750A successfully refreshed from Google Patents.
US3594750A
Expired / Lapsed
US
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Device for measuring temperature of molten materials and method of use
Assignee: Continental Elektronidustrie AG
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Filing: 1968-05-13
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Granted: 1971-07-20
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Expires: 1988-05-13
Abstract
Abstract The temperature in a melt is measured by introducing or casting into the melt a device which releases a wireless signal for detection outside the melt at a preset temperature. The device operates by means of a fuse contact which upon melting at a preset temperature activates a signal source.
Inventors
- 👤 Erich Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:07
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
36 words
The apparatus of claim 1, wherein said casting device also contains a built-in source of electric energy, and said fusible safety constitutes the fuse contact means utilizing the energy from said source to ignite said charge.
Claim 2
Dependent Claim
107 words
The apparatus of claim 2, wherein said device comprises a chamber containing said electric energy source, a safety screw adjustably connecting one terminal of said source to the housing of said device, a detonator for said explosive charge including a heating wire, means connecting the other terminal of said source to one end of said heating wire, a pair of contact electrodes on opposite sides of said fusible safety, means connecting one of said electrodes to the other end of said heating wire, the other of said electrodes being adapted to be connected to said housing at least when said device is in and electrically conductive melt.
Claim 3
Dependent Claim
21 words
The apparatus of claim 3 wherein said second electrode is connected to said housing even in the absence of said melt.
Claim 4
Dependent Claim
20 words
The apparatus of claim 3, wherein said melt serves to establish said connection between the second electrode and the housing.
Claim 5
Dependent Claim
67 words
The apparatus of claim 3, wherein said contact eLectrodes are enclosed in a tube sealed at the outer end with a ceramic plug pierced by said other electrode, said electrodes terminating inside said tube on opposite sides of a spacer which does not quite fill the cross section of said tube, the spaces in said tube on opposite sides of said spacer containing granular fusible contact metal.
Claim 6
Dependent Claim
17 words
The apparatus of claim 6, wherein said spacer has a bore hole connecting its said opposite sides.
Claim 7
Dependent Claim
42 words
The apparatus of claim 6, wherein said tube is subdivided into two chambers, each chamber containing a pair of said contact electrodes, a spacer between them, and granular fusible contact metal, respectively melting at different temperatures in different ones of said chambers.
Claim 8
Dependent Claim
25 words
The apparatus of claim 6 wherein said granular metal is an alloy having a melting point in the range of from 1500* to 1650* C.
References Cited (Backward Citations)
US1043228A
Cited
US2270226A
Cited
US3105229A
Cited
GB974070A
Cited
US3277824A
Cited
US3396580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |