Patent US4736400A successfully refreshed from Google Patents.
US4736400A
Expired / Lapsed
US
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Diffusion bonded x-ray target
Assignee: Varian Medical Systems Technologies Inc
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Filing: 1986-01-09
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Granted: 1988-04-05
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Expires: 2006-01-09
Abstract
Abstract A rotatable x-ray target assembly and process for manufacturing the same is provided for an x-ray tube. The x-ray target assembly comprises an x-ray target member having an opening disposed therethrough and a support member having: a mounting surface disposed transversely to the axis of rotation, a lower surface of the target member being disposed on the mounting surface; and, a threaded stem extending from said mounting surface through the opening of the target member. The support member also comprises a nut adapted to receive the threaded stem, the nut engaging an upper surface of the target member. The target member is secured to the support member by brazing material disposed between the lower surface of the target member and the mounting surface, a first portion of the brazing material being diffused into the target member and a second portion of the brazing material being diffused into the mounting surface of the support member. With such arrangement, the target member is structurally bonded to the support member. Thus, the target member is substantially prevented from slipping on the support member during the rotation of the x-ray target member during operation of the x-ray tube, thereby preventing the target member from becoming imbalanced on the support member and substantially eliminating vibration of the target member during rotation.
Inventors
- 👤 Thomas J. Koller
- 👤 Steven Tavoletti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
C; C23; C23C; C23C26/00; B; B23; B23K; B23K15/00; B23K15/0046; B23K20/00; B23K20/02; B23K20/023; B23K20/22; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/322; C23C10/00; C23C10/28; C23C10/30; H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/108; H01J2235/00; H01J2235/10; H01J2235/1006; H01J2235/1013
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
113 words
An x-ray target assembly comprising: an x-ray target member; means for supporting the x-ray target member; and means for securing said target member to said supporting means, said securing means comprising a non-refractory metal brazing material disposed at an interface between a first surface of the target member and a first surface of the supporting means and substantially completely diffused into the target member and supporting means, with a first portion of the brazing material being diffused into the first surface of the target member and a second portion of the brazing material being diffused into the first surface of the supporting means, the first surfaces being in contact at the interface therebetween.
Claim 2
Dependent Claim
113 words
An x-ray target assembly comprising: an x-ray target member; means for supporting the x-ray target member; and means for securing said target member to said supporting means, said securing means comprising a non-refractory metal brazing material disposed at an interface between a first surface of the target member and a first surface of the supporting means and substantially completely diffused into the target member and supporting means, with a first portion of the brazing material being diffused into the first surface of the target member and a second portion of the brazing material being diffused into the first surface of the supporting means, the first surfaces being in contact at the interface therebetween.
Claim 3
Dependent Claim
21 words
The x-ray target assembly of claim 1 wherein the x-ray target member and the supporting means each comprise a refractory metal.
Claim 4
Dependent Claim
48 words
The x-ray target assembly of claim 1 wherein the supporting means comprises a stem portion and a flange portion disposed transversely to such stem portion, the x-ray target member being disposed on the flange portion and the stem portion extending through an opening in the x-ray target member.
Claim 5
Dependent Claim
25 words
The x-ray target assembly of claim 3 wherein said brazing material is disposed at an interface between the x-ray target member and the flange portion.
Claim 6
Dependent Claim
25 words
The x-ray target assembly of claim 4 wherein said brazing material is disposed at an interface between the x-ray target member and the stem portion.
Claim 7
Dependent Claim
33 words
The x-ray assembly of claim 3 wherein the stem portion is threaded and said supporting means further comprises means for receiving said threaded stem portion, said receiving means engaging the x-ray target member.
Claim 8
Dependent Claim
25 words
The x-ray target assembly of claim 6 wherein said brazing material is disposed at an interface between the receiving means and the x-ray target member.
Claim 9
Dependent Claim
25 words
The x-ray target assembly of claim 7 wherein said brazing material is disposed at an interface between the receiving means and the threaded stem portion.
Claim 10
Dependent Claim
18 words
The x-ray target assembly of claim 2 wherein said brazing material comprises an alloy of palladium and cobalt.
Claim 11
Dependent Claim
18 words
The x-ray target assembly of claim 2 wherein said brazing material comprises an alloy of palladium and nickel.
Claim 12
Dependent Claim
171 words
An x-ray tube comprising: (a) an evacuated envelope; and (b) a rotatable x-ray target assembly disposed within the envelope and rotatable about an axis of rotation, the x-ray target assembly comprising: (i) an x-ray target member having an opening disposed therethrough; (ii) a support member having: a mounting surface disposed transversely to the axis of rotation, a lower surface of the target member being disposed on the mounting surface; and, a threaded stem extending from said mounting surface through the opening of the target member; (iii) means for receiving the threaded stem, said receiving means engaging an upper surface of the target member; and (iv) means for securing the target member to the support member, said securing means comprising a non-refractory metal brazing material disposed between the lower surface of the target member and the mounting surface; the brazing material being substantially completely diffused into the lower surface of the target member and the mounting surface of the support member, with said lower surface and mounting surface being in substantial contact.
Claim 13
Dependent Claim
171 words
An x-ray tube comprising: (a) an evacuated envelope; and (b) a rotatable x-ray target assembly disposed within the envelope and rotatable about an axis of rotation, the x-ray target assembly comprising: (i) an x-ray target member having an opening disposed therethrough; (ii) a support member having: a mounting surface disposed transversely to the axis of rotation, a lower surface of the target member being disposed on the mounting surface; and, a threaded stem extending from said mounting surface through the opening of the target member; (iii) means for receiving the threaded stem, said receiving means engaging an upper surface of the target member; and (iv) means for securing the target member to the support member, said securing means comprising a non-refractory metal brazing material disposed between the lower surface of the target member and the mounting surface; the brazing material being substantially completely diffused into the lower surface of the target member and the mounting surface of the support member, with said lower surface and mounting surface being in substantial contact.
Claim 14
Dependent Claim
17 words
The x-ray tube of claim 11 wherein the x-ray target member and the support member comprise TZM.
Claim 15
Dependent Claim
18 words
The x-ray target assembly of claim 12 wherein said brazing material comprises an alloy of palladium and cobalt.
Claim 16
Dependent Claim
18 words
The x-ray target assembly of claim 12 wherein said brazing material comprises an alloy of palladium and nickel.
Claim 17
Dependent Claim
101 words
An x-ray target assembly comprising: an x-ray target member having an x-ray target surface disposed thereon; means for supporting the x-ray target member; and means for securing said target member to said supporting means, said securing means comprising a member comprising a non-refractory metal diffusing material disposed at an interface between a first surface of the target member and a first surface of the supporting means, the diffusing material member being substantially completely diffused into the first surface of the target member and the first surface of the supporting means, with the first surfaces being in contact at the interface therebetween.
Claim 18
Dependent Claim
101 words
An x-ray target assembly comprising: an x-ray target member having an x-ray target surface disposed thereon; means for supporting the x-ray target member; and means for securing said target member to said supporting means, said securing means comprising a member comprising a non-refractory metal diffusing material disposed at an interface between a first surface of the target member and a first surface of the supporting means, the diffusing material member being substantially completely diffused into the first surface of the target member and the first surface of the supporting means, with the first surfaces being in contact at the interface therebetween.
Claim 19
Dependent Claim
18 words
The x-ray target assembly of claim 15 wherein said diffusing material comprises an alloy of palladium and cobalt.
Claim 20
Dependent Claim
18 words
The x-ray target assembly of claim 15 wherein said diffusing material comprises an alloy of palladium and nickel.
References Cited (Backward Citations)
US31560A
Cited
US2754168A
Cited
US2480351A
Cited
US2570770A
Cited
US2720575A
Cited
US3259971A
Cited
US3496630A
Cited
FR1598193A
Cited
US3836803A
Cited
DE2215370A1
Cited
US3819968A
Cited
US3969131A
Cited
US4004174A
Cited
US3935986A
Cited
US4141606A
Cited
US4063124A
Cited
US4115718A
Cited
US4271372A
Cited
US4097759A
Cited
US4097760A
Cited
USRE31560E
Cited
US4166231A
Cited
US4255685A
Cited
US4336476A
Cited
US4327305A
Cited
US4335327A
Cited
US4276493A
Cited
US4367556A
Cited
US4252263A
Cited
JPS5795051A
Cited
US4480165A
Cited
JPS58119142A
Cited
JPS58142750A
Cited
JPS58167086A
Cited
US4481655A
Cited
US4520496A
Cited
US4583243A
Cited
US4574388A
Cited
EP0169117A1
Cited
US5519093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |