US3794872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving target spring loaded x-ray tube
Assignee: Individual
•
Filing: 1972-06-21
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Granted: 1974-02-26
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Expires: 1992-06-21
Abstract
Abstract A sealed-off X-ray tube having a flat target surface facing an electron beam source and carried by a rigid support mounted for sliding reciprocally lateral motion against a sliding surface. A bellows is sealed vacuum tight to the target and to the wall of the tube opposite the sliding surface so that the target, the bellows, and the envelope of the tube form a closed surface. Conduits extend through the sliding surface to direct the flow of cooling fluid against the back surface of the target and carry the fluid away. The axis of the target reciprocates laterally in a direction perpendicular to the axis of the tube but the target does not rotate on its own axis. The target may be moved manually or by motor and with a linear, or circular motion. Because of the movement of the target, virtually constant X-ray beams radiate through windows of the tube and the effective life of the target is substantially increased.
Inventors
- 👤 D Haas
- 👤 J Pichert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
A sealed-off X-ray tube, comprising: an evacuated envelope having a rigid wall and an X-ray permeable window; an electron beam source for generating an electron beam; a target having a flat surface facing said electron beam, said surface defining a plane; rigid support means slidably supporting said target from said rigid wall to permit said target to move only in directions which maintain said flat surface within said defined plane; and a bellows sealed vacuum-tight to said rigid wall and vacuumtight to said target.
Claim 2
Dependent Claim
84 words
A sealed-off X-ray tube, comprising: an evacuated envelope having a rigid wall and an X-ray permeable window; an electron beam source for generating an electron beam; a target having a flat surface facing said electron beam, said surface defining a plane; rigid support means slidably supporting said target from said rigid wall to permit said target to move only in directions which maintain said flat surface within said defined plane; and a bellows sealed vacuum-tight to said rigid wall and vacuumtight to said target.
Claim 3
Dependent Claim
42 words
A sealed-off X-ray tube as claimed in claim 1 wherein said support means includes a post rigidly attached at one end to said target; said post having a flange; and a spring maintaining said flange in sliding contact with said rigid wall.
Claim 4
Dependent Claim
37 words
A sealed-off X-ray tube as claimed in claim 2 wherein said flange includes a sliding surface and wherein said rigid wall includes a sliding surface, both of which are in a plane parallel to said defined plane.
Claim 5
Dependent Claim
23 words
A sealed-off X-ray tube as claimed in claim 3 wherein said post has conduits for transporting coolant fluid to and from said target.
Claim 6
Dependent Claim
43 words
A sealed-off X-ray tube as claimed in claim 4 further comprising a motor in mechanical communication with said post for moving said post from one position to another thereby also moving said flat surface from one position to another within said defined plane.
Claim 7
Dependent Claim
34 words
A sealed-off X-ray tube as claimed in claim 5 wherein the shaft of said motor is eccentrically coupled with said post for circular movement of said post and flat surface without substantial rotation thereof.
Claim 8
Dependent Claim
35 words
A sealed-off X-ray tube as claimed in claim 1 further comprising a motor in mechanical communication with said rigid support meanS for moving said flat surface from one position to another within said defined plane.
Claim 9
Dependent Claim
29 words
A sealed-off X-ray tube as claimed in claim 7 wherein said motor is coupled with said rigid support means for movement of said flat surface in one dimension only.
Claim 10
Dependent Claim
32 words
A sealed-off X-ray tube as claimed in claim 7 wherein said motor is coupled with said rigid support means for movement of said flat surface in both dimensions of said defined plane.
Claim 11
Dependent Claim
30 words
A sealed-off X-ray tube as claimed in claim 9 wherein said motor is coupled with said rigid support means for gyratory movement of said flat surface within said defined plane.
References Cited (Backward Citations)
US2058105A
Cited
US2133606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |