Patent US3858448A successfully refreshed from Google Patents.
US3858448A
Expired / Lapsed
US
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Magnetic drive for meter
Assignee: Sensus Spectrum LLC
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Filing: 1971-07-14
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Granted: 1975-01-07
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Expires: 1991-07-14
Abstract
Abstract A turbine meter has a measuring chamber assembly complete with rotor and a magnetic drive train to an external register mounted on a detachable cover plate mounted over a side opening in a hollow-meter body. The measuring chamber assembly has a special slide guide fit and internal seating on the body, and it can be inserted into the body only in proper orientation in the flow path. An adapter plate on the inside of the cover positions the measuring chamber assembly relative to the cover plate. A special sealed casing magnetic drive includes rotatably mounting the driver and driven magnets on common shaft means oppositely projecting from the casing end wall.
Inventors
- 👤 Howard J Evans
- 👤 Joseph B Lofink
- 👤 Joseph A Bonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:52
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/115; G01F1/1155
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
A fluid meter comprising a housing, a measuring chamber including a fluid flow responsive member within said housing, a register chamber containing a register assembly for registering fluid flow mounted exteriorly of said housing, a casing projecting from said measuring chamber into said register chamber, said casing having an end wall remote from said measuring chamber, unitary shaft means projecting in either direction from said end wall, a driver magnetic coupling member rotatably mounted solely on said shaft means at spaced points thereon within said casing, said driver magnetic coupling member being separate and remote from said fluid flow responsive member and being drive connected therewith, a driven magnetic coupling member rotatably mounted solely on said shaft means at spaced point thereon outside said casing and in surrounding relationship with respect thereto means on said driven magnetic coupling member for drive connecting said member to said register assembly.
Claim 2
Dependent Claim
148 words
A fluid meter comprising a housing, a measuring chamber including a fluid flow responsive member within said housing, a register chamber containing a register assembly for registering fluid flow mounted exteriorly of said housing, a casing projecting from said measuring chamber into said register chamber, said casing having an end wall remote from said measuring chamber, unitary shaft means projecting in either direction from said end wall, a driver magnetic coupling member rotatably mounted solely on said shaft means at spaced points thereon within said casing, said driver magnetic coupling member being separate and remote from said fluid flow responsive member and being drive connected therewith, a driven magnetic coupling member rotatably mounted solely on said shaft means at spaced point thereon outside said casing and in surrounding relationship with respect thereto means on said driven magnetic coupling member for drive connecting said member to said register assembly.
Claim 3
Dependent Claim
32 words
The combination of claim 1 in which said shaft means comprises opposite ends of a single shaft element which is discrete from the casing end wall on which it is fixedly mounted.
References Cited (Backward Citations)
US3388595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |