Patent US4535640A successfully refreshed from Google Patents.
US4535640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic fiber molten metal sampler
Assignee: KEYSTONE SENSORS LLC
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Filing: 1983-11-02
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Granted: 1985-08-20
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Expires: 2003-11-02
Abstract
Abstract A non-splash molten metal sampler has a refractory fiber body which defines a cylindrical mold cavity with sand-resin plugs providing end walls for the cavity. The plugs can be formed in place. The fiber body is easily machined to provide a side entry port and grooves for pin sample tubes and thermocouple wires.
Inventors
- 👤 Richard A. Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:58
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/12; G01N1/125
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A molten metal sampler comprising first wall means defining a generally cylindrical sample cavity, said first wall means being formed from temperature resistant fibers, and second wall means for sealing the ends of said sample cavity, said second wall means comprising molded sand-resin plugs spanning said cavity, said plugs being in sealing contact with said first wall means and a side entry port to introduce molten metal between said plugs, and smooth plates between said sand plugs and spaced to form disc samples with smooth surfaces.
Claim 2
Dependent Claim
86 words
A molten metal sampler comprising first wall means defining a generally cylindrical sample cavity, said first wall means being formed from temperature resistant fibers, and second wall means for sealing the ends of said sample cavity, said second wall means comprising molded sand-resin plugs spanning said cavity, said plugs being in sealing contact with said first wall means and a side entry port to introduce molten metal between said plugs, and smooth plates between said sand plugs and spaced to form disc samples with smooth surfaces.
Claim 3
Dependent Claim
28 words
A sampler in accordance with claim 1 in which the sand plugs are molded in place by inserting sand-resin mix through the aperture in said first wall means.
Claim 4
Dependent Claim
76 words
A sampler in accordance with claim 1 including pin sample tubes inserted in grooves in said first wall means which extend angularly inwardly from the top of said first wall means toward said second wall means, said fill tubes being positioned in recesses in said first wall means to provide clearance for a mounting tube, and a tube which is inserted in said first wall means and which tube holds said pin sample tubes in place.
Claim 5
Dependent Claim
38 words
A sampler in accordance with claim 1 in which said first wall means is formed by two split wall means formed from refractory fiber which are cemented together by refractory cement along the juncture of the wall means.
Claim 6
Dependent Claim
33 words
A sampler in accordance with claim 1 in which said first wall means is provided with a shoulder to support one of said metal discs of a larger diameter than the other disc.
Claim 7
Dependent Claim
27 words
The sampler of claim 1 including recesses formed in said first wall means for electrical wires to supply a thermocouple head at one end of said sampler.
Claim 8
Dependent Claim
44 words
A sampler in accordance with claim 1 including a recess in the interior side wall of said sampler, said recess intersecting said side fill opening, and a pin sample tube in said recess communicating with said side fill opening to receive molten metal therefrom.
Claim 9
Independent Claim
62 words
A method of making a molten metal sampler comprising the steps of providing a cylindrical mold body formed from refractory fibers having a mold cavity formed from refractory fiber, providing discs to define walls of the mold cavity, forming a hole in the mold body and injecting a sand-resin mix against a disc to form an end wall for the sample cavity.
Claim 10
Independent Claim
62 words
A method of making a molten metal sampler comprising the steps of providing a cylindrical mold body formed from refractory fibers having a mold cavity formed from refractory fiber, providing discs to define walls of the mold cavity, forming a hole in the mold body and injecting a sand-resin mix against a disc to form an end wall for the sample cavity.
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) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |