Patent US3742226A successfully refreshed from Google Patents.
US3742226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cell for x-ray fluorescence analysis
Assignee: APPLIED RES LAB
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Filing: 1971-05-14
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Granted: 1973-06-26
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Expires: 1991-05-14
Abstract
Abstract Solids in a slurry batch or batch mixtures of liquids of different densities the upper surfaces of which are presented in a liquid cell for X-ray analysis are prevented from separating by an impeller causing rotary movement of the slurry or liquid mixture within the cell; the liquid surface being maintained substantially planar by baffles which inhibit the creation of a vortical cavity.
Inventors
- 👤 A Smallbone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:50
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N23/2204; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A ''''window up'''' type liquid cell for X-ray fluorescence analysis comprising a walled receptacle having a top and bottom, a window opening adjacent the top of said receptacle, means for imparting rotary motion to liquid contents of said receptacle, and means for inhibiting creation of a vortical cavity in the liquid contents of said receptacle during operation of said rotary motion imparting means comprising baffle plate means in said receptacle extending from the center of said receptacle toward its walls and from adjacent said window opening toward the bottom of said receptacle.
Claim 2
Dependent Claim
33 words
A liquid cell according to claim 2 in which said baffle plate means comprises a pair of plates interlocking at the center of said receptacle and extending into engagement with the walls thereof.
Claim 3
Dependent Claim
109 words
A ''''window up'''' type liquid cell for X-ray fluorescence analysis comprising a walled receptacle having a top and bottom, a window opening adjacent the top of said receptacle, means for imparting rotary motion to liquid contents of said receptacle comprising an impeller in said receptacle and means including a motor drive unit outside said receptacle for rotating said impeller; and means for inhibiting creation of a vortical cavity in the liquid contents of said receptacle during rotation of said impeller comprising baffle plate means in said receptacle extending from the center of said receptacle toward its walls and from adjacent said window opening toward the bottom of said receptacle.
Claim 4
Dependent Claim
43 words
A liquid cell according to claim 4 in which said impeller comprises a free bar magnet and said motor drive unit includes means for producing a rotating magnetic field encompassing said bar magnet, whereby said bar magnet may be rotated within said receptacle.
Claim 5
Dependent Claim
29 words
A liquid cell according to claim 4 in which said motor drive unit includes a drive shaft extending through the bottom of said receptacle and connected to said impeller.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |