US3681604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable x-ray generating machine
Assignee: Bendix Corp
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Filing: 1970-08-17
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Granted: 1972-08-01
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Expires: 1990-08-17
Abstract
Abstract A portable X-ray generating machine having an X-ray tube and two spiral generator power sources connected to each other and to the X-ray tube. One generator supplies a positive potential to the anode of the X-ray tube, and the other generator supplies a negative potential to the cathode of the X-ray tube. A potential drop is thus provided across the X-ray tube during operation that is approximately twice as large as the potential output of any one spiral generator. A number of embodiments illustrating different arrangements of the X-ray tube and spiral generator elements are illustrated and described. The various embodiments include different configurations of material having a high magnetic permeability placed about the spiral generators. This material increases the output of the generators from that which could be obtained if no such material were present, and in at least one embodiment also increases the safety of the device by preventing the induction of a current in any element in the vicinity of the X-ray generating machine that could be potentially harmful to an operator.
Inventors
- 👤 Daryl L Criswell
- 👤 Clarence V Sebold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:21
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/10; H01; H01F; H01F5/00; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/537; H05G1/02; H05G1/04; H05G1/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
60 words
An X-ray generating machine comprising: an X-ray tube; a spiral generator encircling at least a portion of said X-ray tube, said spiral generator being electrically connected to said X-ray tube; and a layer of material having a high magnetic permeability disposed between said X-ray tube and said spiral generator to prevent inductive coupling between said generator and said X-ray tube.
Claim 2
Dependent Claim
60 words
An X-ray generating machine comprising: an X-ray tube; a spiral generator encircling at least a portion of said X-ray tube, said spiral generator being electrically connected to said X-ray tube; and a layer of material having a high magnetic permeability disposed between said X-ray tube and said spiral generator to prevent inductive coupling between said generator and said X-ray tube.
Claim 3
Dependent Claim
22 words
The combination set forth in claim 1 in which said material having a high magnetic permeability also has a high electrical resistance.
Claim 4
Dependent Claim
28 words
The combination set forth in claim 2 in which said layer of material having a high magnetic permeability is formed from a plurality of small diameter ferrite rods.
Claim 5
Dependent Claim
54 words
The combination set forth in claim 1 in which said material having a high magnetic permeability forms a first cylindrical layer that is broken along the entire length of the cylinder by an electrically non-conductive material that separates said high magnetic permeability material so that said high magnetic permeability material forms an open surface.
Claim 6
Dependent Claim
63 words
The combination set forth in claim 4 further including a second spiral generator in line with said spiral generator and electrically connected to said X-ray tube; and a second cylindrical layer of a material having a high magnetic permability disposed within said second spiral generator, said first and second layers of material having a high magnetic permeability being electrically insulated from each other.
Claim 7
Dependent Claim
49 words
The combination set forth in claim 5 in which the material having A high magnetic permeability forming said second cylindrical layer is separated along the entire length of said second cylindrical layer by an electrically non-conductive material, said material having a high magnetic permeability thereby forming an open surface.
Claim 8
Dependent Claim
31 words
The combination set forth in claim 1 in which said material having a high magnetic permeability supports a large magnetic field and thereby increases the voltage output of said spiral generator.
Claim 9
Dependent Claim
159 words
An X-ray generating machine comprising: an X-ray tube having an anode electrode and a cathode electrode; a first spiral generator encircling a portion of said X-ray tube an electrically connected to one of said electrodes; a second spiral generator in line with said first spiral generator and electrically connected to the other of said electrodes, each of said first and second spiral generators comprising wound inner and outer conductive foils separated by a layer of electrically insulating material; and means electrically connecting the inner foil of each spiral generator with the outer foil of the other, said electrical connecting means causing a single charging voltage supplied to one foil of one spiral generator and to the foil of the other spiral generator electrically connected to said one foil to charge said generators to produce output voltages of opposite polarity and thus provide a potential drop between said anode and said cathode larger than the output of either one generator.
Claim 10
Dependent Claim
159 words
An X-ray generating machine comprising: an X-ray tube having an anode electrode and a cathode electrode; a first spiral generator encircling a portion of said X-ray tube an electrically connected to one of said electrodes; a second spiral generator in line with said first spiral generator and electrically connected to the other of said electrodes, each of said first and second spiral generators comprising wound inner and outer conductive foils separated by a layer of electrically insulating material; and means electrically connecting the inner foil of each spiral generator with the outer foil of the other, said electrical connecting means causing a single charging voltage supplied to one foil of one spiral generator and to the foil of the other spiral generator electrically connected to said one foil to charge said generators to produce output voltages of opposite polarity and thus provide a potential drop between said anode and said cathode larger than the output of either one generator.
Claim 11
Dependent Claim
78 words
The combination set forth in claim 8 in which a first conductive element contacting the inner foil of one of said generators and the outer foil of the other said generators, the inner foil and insulating layer of said other generator being folded over said first conductive element; and a second conductive element contacting the outer conductive foil of said one spiral generator and said folded over portion of said inner conductive foil of said other spiral generator.
Claim 12
Dependent Claim
63 words
The combination set forth in claim 9 further including triggering means in line with said first and second spiral generators for shorting said first and second conductive elements at one position to cause transmission waves to propagate from said one position between the foils of each spiral generator and provide an output voltage pulse from each spiral generator at substantially the same instant.
Claim 13
Dependent Claim
75 words
An X-ray generating machine comprising: an X-ray tube; a spiral generator power source for said X-ray tube connected to said tube; and means comprising a layer of a material having a high magnetic permeability at least partially containing said spiral generator for reducing electric coupling between said generator and any conductive element in the vicinity of said generator and for increasing the generator output by supporting a large magnetic field about said generator during operation.
Claim 14
Dependent Claim
75 words
An X-ray generating machine comprising: an X-ray tube; a spiral generator power source for said X-ray tube connected to said tube; and means comprising a layer of a material having a high magnetic permeability at least partially containing said spiral generator for reducing electric coupling between said generator and any conductive element in the vicinity of said generator and for increasing the generator output by supporting a large magnetic field about said generator during operation.
Claim 15
Dependent Claim
25 words
The combination set forth in claim 11 in which: said material having a high magnetic permeability comprises a ferrite material having a high electrical resistance.
Claim 16
Dependent Claim
53 words
The combination set forth in claim 11 in which: said spiral generator has an inner diameter larger than the outer diameter of said X-ray tube; said spiral generator encircles said X-ray tube; and a second layer of a material having a high magnetic permeability is disposed between said generator and said X-ray tube.
Claim 17
Dependent Claim
27 words
The combination set forth in claim 11 in which said layer of material having a high magnetic permeability comprises a cylinder that completely encircles said spiral generator.
Claim 18
Dependent Claim
38 words
The combination set forth in claim 14 in which: the combination includes a second spiral generator in line with said spiral generator; and said layer of material having a high magnetic permeability also encircles said second spiral generator.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |