US4529635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiograph identifying means
Assignee: INSPECTION EQUIPMENT Ltd
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Filing: 1983-02-07
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Granted: 1985-07-16
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Expires: 2003-02-07
Abstract
Abstract A flexible character-indentable plastics embossing tape (11) is backed by and bonded to a lead strip not more than 0.025 inches (i.e. approximately 0.65 millimeters) thick, to form a tape suitable for identifying radiographs. The lead strip (13) is itself backed by a relatively thin and flimsy plastics or fabric strip (15) which, when removed, allows the lead (and hence the lead-plastic tape as a whole) to be pressure-bonded to the surface to be radiographed. A conventional tape-embossing gun is used to indent the desired characters in succession, and in order, into the lead-backed tape, without necessarily severing the lead; and then the backing strip (15) is peeled away to expose the layer (14) of adhesive which pressure-bonds the indented tape to the object to be radiographed. X-rays incident on the embossed tape will cause the raised characters (a) to show up dark on the subsequently-developed film, while the raised side areas (b) will show up white. Each character will thus stand out on the developed film.
Inventors
- 👤 Andrew D. Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:07
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/047; B32B3/00; B32B3/26; B32B3/30; B32B7/00; B32B7/04; B32B7/12; B32B2405/00; B32B2519/00; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10S428/913; Y10T; Y10T428/00; Y10T428/14; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24545; Y10T428/24612; Y10T428/28; Y10T428/2804; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
97 words
A radiograph-identifying tape means, said means comprising a narrow, elongated strip of lead of a thickness sufficient to accept and retain a configuration produced by embossing, a layer of pressure sensitive adhesive along one surface of said lead strip for adhering the same to a surface, a layer of plastics strip, of a toughness and thickness sufficient to be embossed, backed by and bonded by a pressure-sensitive adhesive applied to the side opposite said first named adhesive layer to said embossable lead strip, and said bonded lead-plastics-adhesive tape being inherently flexible and embossable as a unitary structure.
Claim 2
Dependent Claim
97 words
A radiograph-identifying tape means, said means comprising a narrow, elongated strip of lead of a thickness sufficient to accept and retain a configuration produced by embossing, a layer of pressure sensitive adhesive along one surface of said lead strip for adhering the same to a surface, a layer of plastics strip, of a toughness and thickness sufficient to be embossed, backed by and bonded by a pressure-sensitive adhesive applied to the side opposite said first named adhesive layer to said embossable lead strip, and said bonded lead-plastics-adhesive tape being inherently flexible and embossable as a unitary structure.
Claim 3
Dependent Claim
50 words
A tape according to claim 1 in which said lead strip has a relatively thin strip of material temporarily and removably secured thereon which, when removed, enables said lead strip, and hence the lead-plastics-adhesive tape as a whole, to adhere to a surface to be identified by the character-indented tape.
Claim 4
Dependent Claim
30 words
A tape according to claim 1 in which the thickness of said lead strip being about 0.007 inches, i.e., about 0.15 millimeters, to about 0.025 inches, i.e., about 0.65 millimeters.
Claim 5
Dependent Claim
44 words
A tape according to claim 3 in which the plastics strip is bonded to the lead strip by a pressure-sensitive adhesive whose coating weight per unit area of tape is from about 35 grams per square meter to about 55 grams per square meter.
Claim 6
Dependent Claim
26 words
A tape according to claim 4 in which the coating weight is from about 40 grams per square meter to about 50 grams per square meter.
Claim 7
Dependent Claim
21 words
A tape according to claim 4 in which said plastics strip is of substantially the same thickness as said lead strip.
Claim 8
Dependent Claim
53 words
A tape according to claim 3 in which the strip of lead is further backed by and temporarily bonded to a removable and relatively thin strip which, when removed, enables said lead strip, and hence the lead-plastics tape as a whole, to adhere to a surface to be identified by the character-indented tape.
Claim 9
Dependent Claim
49 words
A tape according to claim 7 in which the plastics backing strip is bonded to the lead strip by a pressure-sensitive adhesive whose coating weight per unit area of tape is within the range of from about 50 grams per square meter to about 80 grams per square meter.
Claim 10
Dependent Claim
19 words
A tape according to claim 8 in which the said coating weight is about 60 grams per square meter.
Claim 11
Dependent Claim
21 words
A tape according to claim 3 in which said plastics strip is of substantially the same thickness as said lead strip.
Claim 12
Dependent Claim
28 words
A tape according to claim 1 in which the thickness of the lead backing strip is 0.007 inches to 0.010 inches, i.e., about 0.15 millimeters to 0.25 millimeters.
Claim 13
Dependent Claim
21 words
A tape according to claim 11 in which said plastics strip is of substantially the same thickness as said lead strip.
Claim 14
Dependent Claim
21 words
A tape according to claim 1 in which said lead backing strip is about 0.008 inches, i.e., about 0.2 millimeters thick.
Claim 15
Dependent Claim
21 words
A tape according to claim 13 in which said plastics strip is of substantially the same thickness as said lead strip.
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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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |