US4504867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation containment apparatus and method
Assignee: Individual
•
Filing: 1982-12-13
•
Granted: 1985-03-12
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Expires: 2002-12-13
Abstract
Abstract A radiation containment apparatus comprising a source of radiation having an area from which radiation is emitted, and a vinyl polymer sheet generally arranged about the area from which radiation is emitted in a manner so as to receive the radiation. The source of radiation is a cathode ray tube. The vinyl polymer sheet is a clear sheet of polyvinyl chloride. An enclosure made up of polyvinyl chloride sheets generally surround the source of radiation. A plurality of fasteners are arranged about the periphery of the cathode ray tube so as to receive the polyvinyl chloride sheet. The polyvinyl chloride sheet also includes notches about the outer edges for engaging the fasteners on the cathode ray tube.
Inventors
- 👤 John D. Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J2229/00; H01J2229/89; H01J2229/8901
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
45 words
A method of reducing radiation emission from a cathode ray tube comprising: positioning a sheet of a transparent polyvinyl chloride material in proximity to and in correspondence with the screen of said cathode ray tube; and affixing said sheet in position exterior of said screen.
Claim 2
Independent Claim
45 words
A method of reducing radiation emission from a cathode ray tube comprising: positioning a sheet of a transparent polyvinyl chloride material in proximity to and in correspondence with the screen of said cathode ray tube; and affixing said sheet in position exterior of said screen.
Claim 3
Dependent Claim
17 words
The method of claim 1, said polyvinyl chloride sheet being of the type imbedded integrally with lead.
Claim 4
Dependent Claim
31 words
The method of claim 1, further including the step of: enclosing said cathode ray tube with polyvinyl chloride, said polyvinyl chloride forming a structural arrangement distal from said cathode ray tube.
Claim 5
Dependent Claim
45 words
The method of claim 1, further including the step of: shaping said sheet to a size generally larger than the size of said screen of said cathode ray tube, said sheet being of a size generally overlapping the outer periphery of said cathode ray tube.
Claim 6
Dependent Claim
40 words
A radiation containment apparatus comprising: a radiation generation means having an area from which radiation is emitted; and a clear polyvinyl chloride material affixed exterior of said area from which said radiation is emitted so as to receive said radiation.
Claim 7
Dependent Claim
40 words
A radiation containment apparatus comprising: a radiation generation means having an area from which radiation is emitted; and a clear polyvinyl chloride material affixed exterior of said area from which said radiation is emitted so as to receive said radiation.
Claim 8
Dependent Claim
14 words
The apparatus of claim 5, said radiation generation means being a cathode ray tube.
Claim 9
Dependent Claim
18 words
The apparatus of claim 5, said polyvinyl chloride material having stabilizers of high atomic number imbedded integrally therein.
Claim 10
Dependent Claim
21 words
The apparatus of claim 5, further including attachments for removably affixing said clear polyvinyl chloride material to said radiation generation means.
Claim 11
Dependent Claim
11 words
The apparatus of claim 8, said attachment means being Velcro™ strips.
Claim 12
Dependent Claim
30 words
The apparatus of claim 8, said attachment means being a plurality of fasteners arranged about the periphery of said radiation generation means, said fasteners receiving said clear polyvinyl chloride material.
Claim 13
Dependent Claim
37 words
The apparatus of claim 10, said clear polyvinyl chloride material including notches about the periphery, said notches engaging said fasteners so as to retain said sheet in its position about said area of said radiation generation means.
Claim 14
Dependent Claim
16 words
The apparatus of claim 5, said polyvinyl chloride material being of the generally glare resistant variety.
Claim 15
Dependent Claim
20 words
The apparatus of claim 5, further comprising: a polyvinyl chloride structure generally surrounding and distal from said radiation generation means.
Claim 16
Independent Claim
41 words
A method of reducing radiation exposure to the viewer of a source of radiation comprising: forming a structure of polyvinyl chloride so as to surround said source of radiation; and interposing said structure between said viewer and said source of radiation.
Claim 17
Independent Claim
41 words
A method of reducing radiation exposure to the viewer of a source of radiation comprising: forming a structure of polyvinyl chloride so as to surround said source of radiation; and interposing said structure between said viewer and said source of radiation.
Claim 18
Dependent Claim
49 words
The method of claim 14, said source of radiation being a cathode ray tube, said structure having one portion generally forming a cabinet around said cathode ray tube and another portion being of clear polyvinyl chloride and forming a screen adjacent the imaging area of said cathode ray tube.
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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |