US4741216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split flowtube for molten metal magnetic flowmeter
Assignee: MSA Safety Inc
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Filing: 1987-02-26
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Granted: 1988-05-03
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Expires: 2007-02-26
Abstract
Abstract A closed flowtube for measuring the volumetric flow rate of a conductive molten metal that can be split apart, to facilitate cleaning and repair, and then re-assembled.
Inventors
- 👤 Robert C. Bates
- 👤 Richard F. Kwiatkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/56; G01F1/58; G01F1/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A molten metal flowtube for a magnetic flowmeter comprising: an elongated casing comprising a top and bottom piece, each piece having a lengthwise central hollowed-out groove in one face of said piece where said grooves form a center flow channel when said two faces are aligned lengthwise, and where said casing has a means for sealing said top and bottom pieces around the outer edge of said channel when assembled, and where said center channel is comprised of or lined with any material composition that cannot be corroded by the conductive metal that is flowing through said flowtube, and where said lining material composition is non-magnetic and has low conductive properties; and, a means for securing together said top and bottom pieces.
Claim 2
Dependent Claim
122 words
A molten metal flowtube for a magnetic flowmeter comprising: an elongated casing comprising a top and bottom piece, each piece having a lengthwise central hollowed-out groove in one face of said piece where said grooves form a center flow channel when said two faces are aligned lengthwise, and where said casing has a means for sealing said top and bottom pieces around the outer edge of said channel when assembled, and where said center channel is comprised of or lined with any material composition that cannot be corroded by the conductive metal that is flowing through said flowtube, and where said lining material composition is non-magnetic and has low conductive properties; and, a means for securing together said top and bottom pieces.
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) | 1991-05-03 | 1991-11-02 | 1992-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-03 | 1995-11-02 | 1996-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-03 | 1999-11-02 | 2000-05-03 | $7700.00 | Window Closed / Lapsed |