Patent US5548125A successfully refreshed from Google Patents.
US5548125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation protective glove
Assignee: Smith and Nephew PLC
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Filing: 1992-07-16
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Granted: 1996-08-20
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Expires: 2012-07-16
Abstract
Abstract Radiation protection gloves for surgical and medical use which have a layer of flexible polymer containing at least 25% by volume of particulate tungsten material and a radiation absorbing capacity equivalent to that of 0.13 mm of lead. The glove preferably comprises an elastomer such as ethylene propylene diene copolymer.
Inventors
- 👤 Barry M. Sandbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:59
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/02; G21F1/10; G21F1/103; G21F1/106; A; A61; A61B; A61B42/00; A61B42/10; G21F3/00; G21F3/02; G21F3/035
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
92 words
A radiation protective glove for surgical and medical use comprising a layer of flexible polymer containing at least 25-90% by volume of particulate tungsten material and having a radiation absorbing capacity equivalent to that of at least 0.13 mm thickness of lead said layer of the glove being of a thickness of 0.1 to 1.3 mm and being sufficiently flexible to enable the wearer to bend finger portions of the glove without undue force, to hold instruments, and to obtain a sense of touch and feel through the walls of the glove.
Claim 2
Dependent Claim
92 words
A radiation protective glove for surgical and medical use comprising a layer of flexible polymer containing at least 25-90% by volume of particulate tungsten material and having a radiation absorbing capacity equivalent to that of at least 0.13 mm thickness of lead said layer of the glove being of a thickness of 0.1 to 1.3 mm and being sufficiently flexible to enable the wearer to bend finger portions of the glove without undue force, to hold instruments, and to obtain a sense of touch and feel through the walls of the glove.
Claim 3
Dependent Claim
21 words
A radiation protective glove according to claim 1 having radiation absorbing capacity equivalent to that of 0.13 mm thickness of lead.
Claim 4
Dependent Claim
15 words
A glove as claimed in claim 1 in which the polymer is an elastomeric polymer.
Claim 5
Dependent Claim
21 words
A glove as claimed in claims 3 in which the elastomeric polymer comprises an ethylene propylene or ethylene propylene diene copolymer.
Claim 6
Dependent Claim
21 words
A glove as claimed in claim 4 in which the elastomeric polymer contains up to 50% by weight of hydrocarbon plasticiser.
Claim 7
Dependent Claim
23 words
A glove as claimed in claim 1 which has a radiation capacity equivalent to that of at least 0.25 mm thickness of lead.
Claim 8
Dependent Claim
23 words
A glove as claimed in claim 1 which has a radiation capacity equivalent to that of at least 0.35 mm thickness of lead.
Claim 9
Dependent Claim
21 words
A glove as claimed in claim 1 in which the polymer layer has a thickness of 0.2 mm to 1.0 mm.
Claim 10
Dependent Claim
22 words
A glove as claimed in claim 1 which in the polymer layer contains 30% to 60% by volume of particulate tungsten material.
Claim 11
Dependent Claim
27 words
A glove as claimed in claim 1 which is capable of absorbing at least 85% of the incident radiation generated at voltages of 60 to 100 kVp.
Claim 12
Dependent Claim
27 words
A glove as claimed in claim 1 which is capable of absorbing at least 90% of the incident radiation generated at voltages of 60 to 100 kVp.
Claim 13
Dependent Claim
27 words
A glove as claimed in claim 1 which is capable of absorbing at least 95% of the incident radiation generated at voltages of 60 to 100 kVp.
Claim 14
Dependent Claim
107 words
A process for forming a flexible radiation protective glove for surgical and medical use having a radiation absorbing capacity equivalent to that of at least 0.13 mm thickness of lead which comprises forming the glove from a polymer composition comprising a flexible polymer and containing at least 25-90% by volume of a particulate tungsten material, said glove being sufficiently flexible to enable the wearer to bend finger portions of the glove without undue force, to hold instruments, and to obtain a sense of touch and feel through the walls of the glove, and wherein said wall of the glove has a thickness of 0.1 to 1.3 mm.
Claim 15
Dependent Claim
107 words
A process for forming a flexible radiation protective glove for surgical and medical use having a radiation absorbing capacity equivalent to that of at least 0.13 mm thickness of lead which comprises forming the glove from a polymer composition comprising a flexible polymer and containing at least 25-90% by volume of a particulate tungsten material, said glove being sufficiently flexible to enable the wearer to bend finger portions of the glove without undue force, to hold instruments, and to obtain a sense of touch and feel through the walls of the glove, and wherein said wall of the glove has a thickness of 0.1 to 1.3 mm.
Claim 16
Dependent Claim
16 words
A process as claimed in claim 11 in which the forming step comprises a moulding step.
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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) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |