Patent US3860167A successfully refreshed from Google Patents.
US3860167A
Expired / Lapsed
US
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Device for sampling gas within the rotating bowl of a centrifuge
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1973-01-10
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Granted: 1975-01-14
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Expires: 1993-01-10
Abstract
Abstract The sampling device comprises a stationary axial column adapted to support at least one transfer tube which is joined to a transverse scoop within a sampling chamber. The scoop is displaceable between a withdrawn position in which it is wholly contained within the column and an outwardly-extended position in which it projects from the column as a result of a relative displacement of the tube with respect to said column. By permitting the controlled withdrawal of the scoops into the stationary axial column to which they are connected, the device makes it possible to introduce and remove the column and the scoops through a narrow transfer opening.
Inventors
- 👤 Pierre Lascoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:20
CPC Classifications
B; B04; B04B; B04B5/00; B04B5/08; B04B11/00; B04B11/02; B04B5/04; B04B5/0442; Y; Y10; Y10S; Y10S494/00; Y10S494/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A device for sampling gas comprising a rotating bowl of a centrifuge, a stationary column mounted on the axis of the rotating bowl, at least one transfer tube for the sampled gas, mounted on said column, a scoop connected to said tube and extending transversely within a sampling chamber at one end of the bowl, said scoop being displaceable between a withdrawn position in which it is wholly contained within the column and an outwardly-extended position in which said scoop projects with respect to said column within the sampling chamber and means for providing a relative displacement of said tube with respect to said column.
Claim 2
Independent Claim
105 words
A device for sampling gas comprising a rotating bowl of a centrifuge, a stationary column mounted on the axis of the rotating bowl, at least one transfer tube for the sampled gas, mounted on said column, a scoop connected to said tube and extending transversely within a sampling chamber at one end of the bowl, said scoop being displaceable between a withdrawn position in which it is wholly contained within the column and an outwardly-extended position in which said scoop projects with respect to said column within the sampling chamber and means for providing a relative displacement of said tube with respect to said column.
Claim 3
Dependent Claim
25 words
A sampling device according to claim 1, including means mounted on the column for locking the scoop connected to the transfer tube in withdrawn position.
Claim 4
Dependent Claim
70 words
A sampling device according to claim 1, said scoop including an elbowed portion of said tube disposed in a plane substantially at right angles to the axis of the bowl and a sampling orifice for said elbowed portion, the displacement of said scoop between its outwardly-extended position and its withdrawn position corresponding to a rotation of said tube about its axis through a given angle with respect to said column.
Claim 5
Dependent Claim
57 words
A sampling device according to claim 3, including a stationary abutment shoulder on said column, the scoop being applied in the position of outward extension with respect to the column against said shoulder and means for applying pressure of application of said scoop against said abutment shoulder by a torsional stress on the tube outside the bowl.
Claim 6
Dependent Claim
43 words
A sampling device according to claim 1, including a series of parallel tubes in said column, a sampling scoop connected to each of said tubes, said scoops being disposed within each of two sampling chambers at the two ends of the rotating bowl.
Claim 7
Dependent Claim
82 words
A sampling device according to claim 5 including means for locking the ends of the tubes remote from the scoops in the outwardly-extended position with respect to the column, said locking means including a sliding yoke, stationary rails carried by the column guiding said yoke and a flat portion in the tube receiving said yoke, said yoke engaging over said flat portion when the torsional stress exerted on the tube applies the scoop against its abutment shoulder and attains a predetermined value.
Claim 8
Dependent Claim
37 words
A sampling device according to claim 6, said yoke applying the torsional stress on the tube and a transverse screw carried by said yoke and applied against a stationary bearing member of the column displacing said yoke.
Claim 9
Dependent Claim
102 words
A sampling device according to claim 1, said scoop including an elbowed duct disposed substantially in a plane which passes through the axis of the tube said sampling orifice, being disposed at one end of said duct a flexible hose element connecting said tube and said elbowed duct, the displacement of said scoop between its outwardly-extended position and its withdrawn position corresponding to a displacement of said tube in a direction parallel to the axis of the column moving said elbowed duct and said flexible hose within a curved guide passage within the column, said passage on a side of said column.
Claim 10
Dependent Claim
65 words
A sampling device according to said locking device for maintaining the scoop in the outwardly-extended position including a spacing sleeve coaxial with the tube to limit the axial travel of said tube in one direction with respect to the column, a fixed corss-bar limiting the movement of said tube in the other direction and a slot in the end of said tube engaging said cross-bar.
Claim 11
Dependent Claim
65 words
A sampling device according to said locking device for maintaining the scoop in the outwardly-extended position including a spacing sleeve coaxial with the tube to limit the axial travel of said tube in one direction with respect to the column, a fixed corss-bar limiting the movement of said tube in the other direction and a slot in the end of said tube engaging said cross-bar.
References Cited (Backward Citations)
US2162199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |