Patent US3790803A successfully refreshed from Google Patents.
US3790803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sighting and relating device for x-ray tube head
Assignee: Individual
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Filing: 1972-10-25
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Granted: 1974-02-05
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Expires: 1992-10-25
Abstract
Abstract Apparatus to maintain a human head in a fixed position in combination with X-ray film cassette holding means and X-ray tube head sighting means arranged to permit periodic exposure of X-ray film at a prescribed angle and distance. The film holding means comprises a film cassette holder movable arcuately about a reference point positionable to substantially correspond to the center of the dental arc of a patient''s mouth, said holder being movable radially relative to the reference point to position film at a prescribed distance and in a prescribed angular relationship to a patient''s head. The X-ray tube head sighting apparatus comprises a target positionable in a prescribed angular relationship to a patient''s head and a sighting tube secured to the X-ray tube head such that the X-ray film cassette and the Xray tube head are accurately positionable in prescribed locations on opposite sides of a head.
Inventors
- 👤 W Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/51
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
156 words
Sighting and relating apparatus for an X-ray tube head, a human head and X-ray film comprising, an X-ray tube head; means to movably support the tube head; a sighting tube having axially aligned openings at opposite ends thereof; means to secure said sighting tube to the tube head such that the longitudinal axis of the sighting tube is substantially parallel to an X-ray beam emitted from the tube head; head restraint means to restrain movement of a human head positioned in spaced relation from said tube head; a target tube; means to secure said target tube to said head restraint; calibrated means connectable between said head restraint and said tube head arranged to indicate distance therebetween; a film holder; means to movably secure said film holder to said head restraint; and means secured to said target tube to cause emission of a beam of light along an axis coinciding with the axis of the sighting tube.
Claim 2
Dependent Claim
156 words
Sighting and relating apparatus for an X-ray tube head, a human head and X-ray film comprising, an X-ray tube head; means to movably support the tube head; a sighting tube having axially aligned openings at opposite ends thereof; means to secure said sighting tube to the tube head such that the longitudinal axis of the sighting tube is substantially parallel to an X-ray beam emitted from the tube head; head restraint means to restrain movement of a human head positioned in spaced relation from said tube head; a target tube; means to secure said target tube to said head restraint; calibrated means connectable between said head restraint and said tube head arranged to indicate distance therebetween; a film holder; means to movably secure said film holder to said head restraint; and means secured to said target tube to cause emission of a beam of light along an axis coinciding with the axis of the sighting tube.
Claim 3
Dependent Claim
36 words
The combination called for in claim 1 wherein the calibrated means comprises a flexible tape having indicia spaced along the length thereof; and means to detachably secure an end of said tape to said tube head.
Claim 4
Dependent Claim
50 words
The combination called for in claim 1 wherein said film holder comprises, frame means adapted to support X-ray film; support arms secured to said frame means; a plate; means to pivotally secure said support arms to said plate; and means to movably secure said plate relative to said head restraint.
Claim 5
Dependent Claim
67 words
The combination called for in claim 3 wherein the means to secure the plate relative to the head restraint comprises a platform having an arcuate groove formed therein; an elongated member having a tenon thereon movable through said arcuate groove; and connector means to secure said plate to said elongated member, said connector means being adapted to permit movement of said plate longitudinally of said elongated member.
Claim 6
Dependent Claim
105 words
An X-Ray film holder comprising a general frame; support means on said frame; an elongated member; pivot means to secure said elongated member to said support means, said pivot means being positionable such that the elongated member is pivotable about a vertical axis passing between the jawbones of a human head; a plate; means to secure said plate to said elongated member such that said plate is movable longitudinally of said elongated member; film support means; hinge means secured between said film support means and said plate means, said hinge means being arranged to permit movement of said film support means about a horizontal axis.
Claim 7
Dependent Claim
105 words
An X-Ray film holder comprising a general frame; support means on said frame; an elongated member; pivot means to secure said elongated member to said support means, said pivot means being positionable such that the elongated member is pivotable about a vertical axis passing between the jawbones of a human head; a plate; means to secure said plate to said elongated member such that said plate is movable longitudinally of said elongated member; film support means; hinge means secured between said film support means and said plate means, said hinge means being arranged to permit movement of said film support means about a horizontal axis.
Claim 8
Dependent Claim
43 words
The combination called for in claim 5 wherein the means to secure the plate to the elongated member comprises: a slide element; interengaging means between said slide element and said elongated member; and means to pivotally secure said plate to said slide element.
Claim 9
Dependent Claim
51 words
The combination called for in claim 5 wherein said film support means comprises: an upwardly extending support arm; and upper and lower frame means on said support arm engageable with upper and lower surfaces of a film cassette, said hinge means being secured to a lower end of said support arm.
Claim 10
Dependent Claim
25 words
The combination called for in claim 7 with the addition of means to secure the upper frame means for movement longitudinally of the support arm.
Claim 11
Dependent Claim
26 words
The combination called for in claim 5 with the addition of an alignment bar; and means to secure said alignment bar to said film support means.
Claim 12
Dependent Claim
20 words
The combination called for in claim 5 wherein the pivot means comprises: a chin rest secured to said support means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |