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Patent US4745631A successfully refreshed from Google Patents.
US4745631A
Expired / Lapsed
US
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Flying spot generator
Assignee: SCAN-TECH SECURITY LP
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Filing: 1982-12-27
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Granted: 1988-05-17
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Expires: 2002-12-27
Abstract
Abstract A flying spot generator is provided for changing a beam of x-rays into a flying spot moving in a linear direction over an object to be detected. The flying spot generator includes a rotating cylinder having even numbers of helical slots. A single long detector is provided behind the object for measuring the radiation characteristics of the object.
Inventors
- 👤 Francis R. Paolini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:50
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/04; G21K1/043; G21K5/00; G21K5/04; G21K5/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
A flying spot generator comprising first means for forming a beam of radiation, second means for generating a flying spot of said radiation from said beam, said second means including a rotating cylinder having an even number of helical slots through which said beam passes to form said flying spot, said first means being located outside of the region occupied by said second means, third means for placing objects to be inspected in said flying spot, and fourth means for detecting said flying spot after traversing through said objects.
Claim 2
Dependent Claim
89 words
A flying spot generator comprising first means for forming a beam of radiation, second means for generating a flying spot of said radiation from said beam, said second means including a rotating cylinder having an even number of helical slots through which said beam passes to form said flying spot, said first means being located outside of the region occupied by said second means, third means for placing objects to be inspected in said flying spot, and fourth means for detecting said flying spot after traversing through said objects.
Claim 3
Dependent Claim
23 words
A flying spot generator according to claim 1, wherein said cylinder is of radiation absorbent material, and said helical slots pass said radiation.
Claim 4
Dependent Claim
21 words
A flying spot generator according to claim 2, wherein said flying spot is linearly directed along said fourth means for detecting.
Claim 5
Dependent Claim
25 words
A flying spot generator according to claim 3, wherein said fourth means for detecting is long and receives said flying spot in a linear arrangement.
Claim 6
Dependent Claim
19 words
A flying spot generator according to claim 4, wherein said radiation is x-radiation, and said helical slots pass x-rays.
Claim 7
Dependent Claim
22 words
A flying spot generator according to claim 4, wherein said third means moves said objects to be inspected through said flying spot.
Claim 8
Dependent Claim
16 words
A flying spot generator according to claim 6, wherein said third means is a conveyor arrangement.
Claim 9
Dependent Claim
13 words
A flying spot generator according to claim 1, wherein said radiation is x-radiation.
Claim 10
Dependent Claim
19 words
A flying spot generator according to claim 1, wherein siad radiation is x-radiation, and said helical slots pass x-rays.
Claim 11
Dependent Claim
27 words
A flying spot generator according to claim 1, wherein said third means is a conveyor arrangement for moving said objects to be inspected through said flying spot.
Claim 12
Dependent Claim
18 words
A flying spot generator according to claim 1, wherein said first means forms a fan beam of x-rays.
Claim 13
Dependent Claim
86 words
A flying spot generator comprising first means for forming a beam of radiation, second means for generating a flying spot of said radiation from said beam, said second means including a rotating cylinder having two helical slots through which said beam pases to form said flying spot, said first means being located outside of the region occupied by said second means, third means for placing objects to be inspected in said flying spot, and fourth means for detecting said flying spot after traversing through said objects.
Claim 14
Dependent Claim
86 words
A flying spot generator comprising first means for forming a beam of radiation, second means for generating a flying spot of said radiation from said beam, said second means including a rotating cylinder having two helical slots through which said beam pases to form said flying spot, said first means being located outside of the region occupied by said second means, third means for placing objects to be inspected in said flying spot, and fourth means for detecting said flying spot after traversing through said objects.
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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) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |