US4938233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation shield
Assignee: Worldwide Innovations and Technologies Inc
•
Filing: 1987-08-03
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Granted: 1990-07-03
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Expires: 2007-08-03
Abstract
Abstract A flexible shield for covering an article and attenuating the flux of electromagnetic radiation relative to the article includes a polymetric matrix charged with an attenuating filler. The shield has a transmission attenuation factor of at least 50% of a primary 100 kVp x-ray beam, a durometer of less than about 100 Shore "00" and a coefficient of sliding friction relative to the article of at least 0.15.
Inventors
- 👤 William W. Orrison, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:42
CPC Classifications
G; G21; G21F; G21F3/00; G21F3/02; A; A61; A61B; A61B6/00; A61B6/10; A61B6/107; A61B6/44; A61B6/4423; G21F1/00; G21F1/02; G21F1/10
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
69 words
A flexible shield for covering an article and attenuating the flux of electromagnetic radiation to or from said article, comprising a polymeric matrix charged with an attenuating filler; said shield having a transmission attenuation factor of at least 50% of a primary 100 kVp x-ray beam, a durometer of less than about 100 Shore "00" and a coefficient of sliding friction relative to said article of at least 0.15.
Claim 2
Dependent Claim
69 words
A flexible shield for covering an article and attenuating the flux of electromagnetic radiation to or from said article, comprising a polymeric matrix charged with an attenuating filler; said shield having a transmission attenuation factor of at least 50% of a primary 100 kVp x-ray beam, a durometer of less than about 100 Shore "00" and a coefficient of sliding friction relative to said article of at least 0.15.
Claim 3
Dependent Claim
14 words
The shield of claim 1, wherein said transmission attenuation factor is at least 75%.
Claim 4
Dependent Claim
14 words
The shield of claim 1, wherein said transmission attenuation factor is at least 90%.
Claim 5
Dependent Claim
14 words
The shield of claim 1, wherein said transmission attenuation factor is at least 97%.
Claim 6
Dependent Claim
21 words
The shield of claims 1, 2, 3 or 4, wherein said shield has a scattering attenuation factor of at least 80%.
Claim 7
Dependent Claim
14 words
The shield of claim 5, wherein said scattering attenuation factor is at least 95%.
Claim 8
Dependent Claim
14 words
The shield of claim 5, wherein said scattering attenuation factor is at least 97%.
Claim 9
Dependent Claim
19 words
The shield of claim 1, wherein said durometer is in the range of from about 5 to about 80.
Claim 10
Dependent Claim
19 words
The shield of claim 1, wherein said durometer is in the range of from about 15 to about 40.
Claim 11
Dependent Claim
14 words
The shield of claim 1, wherein the coefficient of friction is greater than 0.5.
Claim 12
Dependent Claim
14 words
The shield of claim 1, wherein the coefficient of friction is greater than 0.75.
Claim 13
Dependent Claim
14 words
The shield of claim 1, wherein the coefficient of friction is greater than 1.0.
Claim 14
Dependent Claim
14 words
The shield of claim 1, wherein the coefficient of friction is greater than 2.0.
Claim 15
Dependent Claim
85 words
A flexible shield for shrouding an article and attenuating the flux of electromagnetic radiation to or from said article, comprising a viscoelastic polymeric matrix charged with an attenuating inorganic filler; said shield having a transmission attenuation factor of at least 90% and a scattering attenuation factor of at least 90% based on a 100 Kvp x-ray beam, a durometer in the range of from about 5 to about 80 Shore "00", and a coefficient of sliding friction relative to said article of at least 0.75.
Claim 16
Dependent Claim
85 words
A flexible shield for shrouding an article and attenuating the flux of electromagnetic radiation to or from said article, comprising a viscoelastic polymeric matrix charged with an attenuating inorganic filler; said shield having a transmission attenuation factor of at least 90% and a scattering attenuation factor of at least 90% based on a 100 Kvp x-ray beam, a durometer in the range of from about 5 to about 80 Shore "00", and a coefficient of sliding friction relative to said article of at least 0.75.
Claim 17
Dependent Claim
27 words
The shield of claim 14, wherein said matrix is comprised of a polymer selected from the group consisting of viscoelastic vinyl polymers and copolymers, silicones and urethanes.
Claim 18
Dependent Claim
19 words
The shield of claim 15, wherein said filler is a particulate of an inorganic salt having a radiopaque cation.
Claim 19
Dependent Claim
23 words
The shield of claim 16, wherein said cation is selected from the group consisting of barium, bismuth, iodine, uranium, zirconium and mixtures thereof.
Claim 20
Dependent Claim
46 words
The shield of claim 17, wherein said matrix is a plasticized vinyl polymer and further wherein the ratio of plasticizer to polymer is in the range of from about 5:1 to about 32:1 and said filler is present in the range of up to about 50%.
Claim 21
Dependent Claim
16 words
The shield of claim 18, wherein said filler is present from about 10% to about 35%.
Claim 22
Dependent Claim
16 words
The shield of claim 19, wherein said filler is present from about 10% to about 20%.
Claim 23
Dependent Claim
36 words
A disposable radiological garment to be worn by or selectively draped about a patient, comprising a viscoelastic polymeric matrix charged with an attenuating inorganic filler, said garment having a durometer of less than 100 Shore "00".
Claim 24
Dependent Claim
36 words
A disposable radiological garment to be worn by or selectively draped about a patient, comprising a viscoelastic polymeric matrix charged with an attenuating inorganic filler, said garment having a durometer of less than 100 Shore "00".
Claim 25
Dependent Claim
19 words
The garment of claim 21, wherein said matrix exhibits elastic hysteresis over a strain range in excess of 150%.
Claim 26
Dependent Claim
19 words
The garment of claim 22, having a coefficient of sliding friction relative to said patient of at least 0.75.
Claim 27
Dependent Claim
23 words
The garment of claim 23, wherein said matrix is comprised of a vinyl polymer or copolymer and said filler is a barium compound.
Claim 28
Dependent Claim
15 words
The garment of claim 24, configured to envelop a selected anatomical region of said patient.
Claim 29
Dependent Claim
15 words
The garment of claim 24, configured to overlie a selected anatomical region of said patient.
Claim 30
Dependent Claim
15 words
The garment of claim 24, configured to underlie a selected anatomical region of said patient.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |