US3586967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic centering device
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1969-04-23
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Granted: 1971-06-22
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Expires: 1989-04-23
Abstract
Abstract A pneumatic centering device for the inspection of cylindrical or tubular metal parts by nondestructive methods such as eddycurrent testing. The device is centered relative to the part to be tested and comprises a tubular casing fitted or integral with a projecting annular coil form. Two annular chambers are defined on each side of said coil formed between the surface of said part and the tubular casing. The annular chambers are closed by endpieces which are integral with the casing and have radial partition walls so as to form within each chamber adjacent compartments which are limited by the part to be tested. At least one aperture is provided within each chamber for the admission of compressed fluid so as to produce pneumatic cushions within the compartments of said chambers, the function of the cushions being to center the tubular casing relative to the part to be tested.
Inventors
- 👤 Jean-Pierre Peyrot
- 👤 Marie-Therese Destribats
- 👤 Michel Pigeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:30
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; F16C32/0629; F16C32/064; F16C32/0651; F16C32/0681; F16C32/0685; G; G01; G01B; G01B7/00; G01B7/12; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9093
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A pneumatic device for centering an element with respect to a cylindrical member, characterized in that it comprises a tubular casing integral with said element which defines with the surface of the cylindrical member two chambers which are closed by two endpieces, said endpieces being integral with said casing and provided with radial partition walls forming separations within each chamber between adjacent compartments which are limited by said cylindrical member and a plurality of orifices for the admission to said chambers of a compressed fluid which produces within said compartments pneumatic cushions for centering said casing relative to said cylindrical member and wherein said endpieces are provided with baffles in the surface located opposite to said cylindrical member so as to subject the compressed fluid to successive expansions as it passes out of said chambers.
Claim 2
Dependent Claim
135 words
A pneumatic device for centering an element with respect to a cylindrical member, characterized in that it comprises a tubular casing integral with said element which defines with the surface of the cylindrical member two chambers which are closed by two endpieces, said endpieces being integral with said casing and provided with radial partition walls forming separations within each chamber between adjacent compartments which are limited by said cylindrical member and a plurality of orifices for the admission to said chambers of a compressed fluid which produces within said compartments pneumatic cushions for centering said casing relative to said cylindrical member and wherein said endpieces are provided with baffles in the surface located opposite to said cylindrical member so as to subject the compressed fluid to successive expansions as it passes out of said chambers.
Claim 3
Dependent Claim
45 words
A pneumatic device in accordance with claim 1, characterized in that said casing is adapted to communicate with a collecting cavity in which the admission orifices of said chambers have their openings, said cavity being connected to a pipe for the supply of compressed fluid.
Claim 4
Dependent Claim
22 words
A pneumatic device in accordance with claim 1, characterized in that said chambers are annular and surround said cylindrical member externally thereof.
Claim 5
Dependent Claim
34 words
A pneumatic centering device in accordance with claim 3, wherein said radial partition walls are each provided with a terminal slot for limiting the expansion of the fluid as the fluid flows between compartments.
Claim 6
Dependent Claim
33 words
A pneumatic device in accordance with claim 1, characterized in tat said chambers are limited by the internal surface of said cylindrical member, said cavity being formed along the axis of said element.
Claim 7
Dependent Claim
21 words
A pneumatic device in accordance with claim 1, characterized in that said element is formed of at least one electric winding.
Claim 8
Dependent Claim
19 words
A pneumatic device in accordance with claim 6, characterized in that said winding is mounted on a cylindrical form.
Claim 9
Dependent Claim
40 words
A pneumatic device in accordance with claim 6, characterized in that the lead wires of said windings are connected to supply terminals within a separation box in which a pipe for the supply of said compressed fluid has its opening.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |