US3676683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental x-ray head
Assignee: Litton Medical Products Inc
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Filing: 1969-12-31
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Granted: 1972-07-11
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Expires: 1989-12-31
Abstract
Abstract A dental X-ray head having a bucket-shaped end and an exaggerated cone-shaped end. The bucket-shaped end is connected to a suspension system for supporting the dental X-ray head and contains a high voltage transformer and various connections thereto, while the relatively smaller exaggerated cone-shaped end houses an X-ray tube and the contour of the exaggerated coneshaped end follows the slope of the electrical potential established across the X-ray tube.
Inventors
- 👤 Cornelius Keith Vandervelden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:18
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/51
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
A high voltage X-ray apparatus for use in X-raying in limited spaces comprising: an X-ray tube having first and second electrodes, means for holding said first electrode at a potential close to ground potential, and means for generating high voltage for application to said second electrode; a movable head, having an outer enclosure, supporting said X-ray tube with said first electrode located immediately adjacent said enclosure, said enclosure being generally conical in shape near said X-ray tube and gradually increasing in its spacing from said X-ray tube from immediate proximity in the vicinity of said first electrode to a substantial spacing in the vicinity of said second high voltage electrode in accordance with the slope of the electrical potential from said first electrode to said second high voltage electrode; and means for movably supporting said head so that it may be positioned where the portion of the head adjacent said first electrode is close to the body of a patient.
Claim 2
Dependent Claim
160 words
A high voltage X-ray apparatus for use in X-raying in limited spaces comprising: an X-ray tube having first and second electrodes, means for holding said first electrode at a potential close to ground potential, and means for generating high voltage for application to said second electrode; a movable head, having an outer enclosure, supporting said X-ray tube with said first electrode located immediately adjacent said enclosure, said enclosure being generally conical in shape near said X-ray tube and gradually increasing in its spacing from said X-ray tube from immediate proximity in the vicinity of said first electrode to a substantial spacing in the vicinity of said second high voltage electrode in accordance with the slope of the electrical potential from said first electrode to said second high voltage electrode; and means for movably supporting said head so that it may be positioned where the portion of the head adjacent said first electrode is close to the body of a patient.
Claim 3
Dependent Claim
33 words
A X-ray apparatus as defined in claim 1 wherein the first electrode is the cathode and means are provided for connecting the cathode to a filament power supply remote from the movable head.
Claim 4
Dependent Claim
29 words
An X-ray apparatus as defined in claim 1 wherein said head supporting means is connected to said head at an area which is substantially offset from said X-ray tube.
Claim 5
Dependent Claim
41 words
An X-ray apparatus as defined in claim 1 wherein the movable head has one cone-shaped end which supports the X-ray tube, and wherein the other end of the head is bucket shaped and is of greater cross-section than said cone-shaped end.
Claim 6
Dependent Claim
28 words
An X-ray apparatus as defined in claim 4 wherein a high voltage transformer for providing anode potential is located in said bucket shaped end of the movable head.
Claim 7
Dependent Claim
45 words
An X-ray apparatus as defined in claim 1 wherein an X-ray collimator is provided near one end of the head where the head enclosure is immediately adjacent said first electrode, and wherein said head supporting means is connected to the opposite end of said head.
Claim 8
Dependent Claim
116 words
A high voltage X-ray apparatus comprising: an X-ray tube having an anode and a cathode, said cathode being maintained close to ground potential, and means for supplying high voltage to said anode; a movable head enclosing said X-ray tube, said movable head having a housing contoured to provide spacing between said housing and said X-ray tube in a relationship to the slope of the potential established across said X-ray tube, transformer means also enclosed in said head consisting only of a high voltage transformer for providing anode voltage; means for connecting a remotely located filament transformer to said cathode; and means for movably supporting said head to direct X-rays from said X-ray tube in desired directions.
Claim 9
Dependent Claim
116 words
A high voltage X-ray apparatus comprising: an X-ray tube having an anode and a cathode, said cathode being maintained close to ground potential, and means for supplying high voltage to said anode; a movable head enclosing said X-ray tube, said movable head having a housing contoured to provide spacing between said housing and said X-ray tube in a relationship to the slope of the potential established across said X-ray tube, transformer means also enclosed in said head consisting only of a high voltage transformer for providing anode voltage; means for connecting a remotely located filament transformer to said cathode; and means for movably supporting said head to direct X-rays from said X-ray tube in desired directions.
Claim 10
Dependent Claim
39 words
A high voltage X-ray apparatus as defined in claim 7 wherein said head has a small conical end in which the X-ray tube is located, and a large relatively bulky end to which the supporting means is rotatably secured.
Claim 11
Dependent Claim
46 words
An X-ray apparatus as defined in claim 7 wherein the X-ray head is tapered from one end containing said X-ray tube to the other larger end containing said high voltage transformer, and wherein said supporting means is rotatably attached to the head at its larger end.
References Cited (Backward Citations)
US2307612A
Cited
US2909664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |