US4497848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencilling a unique machine-readable marking on each of a plurality of workpieces
Assignee: RCA Licensing Corp
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Filing: 1983-10-28
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Granted: 1985-02-05
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Expires: 2003-10-28
Abstract
Abstract Method and apparatus are described for producing a unique machine-readable marking, such as a bar-code marking, on each of a succession of workpieces, such as glass envelope parts of cathode-ray tubes. The method comprises producing and applying a different unique stencil for each workpiece and then applying a suitable paint through the stencil.
Inventors
- 👤 Anthony S. Baran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:07
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/32; B23; B23K; B23K26/00; B23K26/08; B23K26/083; B23K26/0838; B23K26/18; B41; B41M; B41M1/00; B41M1/12; B23K2101/00; B23K2101/007; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A method for producing a different machine-readable marking on each of a plurality of workpieces comprising A. producing a stencil having openings therein for defining a desired machine-readable marking, B. contacting said stencil with a surface of said workpiece, C. coating said surface with coating material through said stencil, said stencil defining the marks of said marking and D. repeating steps A, B and C including contacting a different stencil defining a different desired machine-readable marking on a different one, and only one, of each of the other of said plurality of workpieces.
Claim 2
Independent Claim
93 words
A method for producing a different machine-readable marking on each of a plurality of workpieces comprising A. producing a stencil having openings therein for defining a desired machine-readable marking, B. contacting said stencil with a surface of said workpiece, C. coating said surface with coating material through said stencil, said stencil defining the marks of said marking and D. repeating steps A, B and C including contacting a different stencil defining a different desired machine-readable marking on a different one, and only one, of each of the other of said plurality of workpieces.
Claim 3
Dependent Claim
30 words
The method defined in claim 1 wherein said machine-readable markings are bar-code markings, and said method includes, prior to step C, verifying that said stencil is for said desired marking.
Claim 4
Dependent Claim
25 words
The method defined in claim 1 wherein step A includes burning a bar code into sheet material with a laser beam to produce said stencil.
Claim 5
Dependent Claim
24 words
The method defined in claim 1 wherein step A includes incising a bar code into sheet material with mechanical means to produce said stencil.
Claim 6
Dependent Claim
53 words
The method defined in claim 1 wherein step A includes providing a layer or sheet of photosolubilizable material or photoinsolubilizable material, photoexposing said layer or sheet to a bar-code pattern of actinic radiation until said layer or sheet is adequately exposed, and then developing said exposed layer or sheet to produce said stencil.
Claim 7
Dependent Claim
18 words
The method defined in claim 1 wherein said stencil is in a card having one stencil pattern therein.
Claim 8
Dependent Claim
27 words
The method defined in claim 1 wherein a plurality of stencils is in a strip of sheet material, said stencils being arranged sequentially along the length thereof.
Claim 9
Independent Claim
84 words
A method for producing a machine-readable bar-code marking on each of a plurality of workpieces comprising A. providing a strip of sheet material, B. producing a sequentially-arranged succession of bar-code stencils in said strip, C. advancing said plurality of workpieces one by one, D. contacting each of said advancing plurality of workpieces with a different one of said succession of stencils, E. and then, for each of said workpieces, applying paint through the stencil applied thereto onto said workpiece, and then removing said stencil.
Claim 10
Independent Claim
84 words
A method for producing a machine-readable bar-code marking on each of a plurality of workpieces comprising A. providing a strip of sheet material, B. producing a sequentially-arranged succession of bar-code stencils in said strip, C. advancing said plurality of workpieces one by one, D. contacting each of said advancing plurality of workpieces with a different one of said succession of stencils, E. and then, for each of said workpieces, applying paint through the stencil applied thereto onto said workpiece, and then removing said stencil.
Claim 11
Dependent Claim
15 words
The method defined in claim 6 wherein said markings are arranged longitudinally on said strip.
Claim 12
Dependent Claim
15 words
The method defined in claim 6 wherein said markings are arranged transversely on said strip.
Claim 13
Dependent Claim
16 words
The method defined in claim 6 wherein step E includes applying longitudinal tension to said strip.
Claim 14
Dependent Claim
20 words
The method defined in claim 1 wherein said strip is composed essentially of fibrous material having a high wet strength.
Claim 15
Independent Claim
149 words
A method for depositing a different desired bar-code marking on each of a plurality of glass workpieces comprising A. providing a strip of sheet material, B. using a focused laser beam, burning openings through said strip to produce a plurality of stencils for stencilling said desired bar-code markings, said stencils being in a sequential arrangement in said strip, C. verifying that said stencils are for said desired markings, D. advancing a succession of workpieces to which a bar-code marking is to be applied. E. contacting one of said stencils with the surface of one of said succession of workpieces, F. applying paint through the openings in said stencil while it is contacting said surface, G. removing said stencil from said surface, H. and repeating steps E, F and G for each of the remaining plurality of workpieces using a different one of said plurality of stencils for each workpiece.
Claim 16
Independent Claim
149 words
A method for depositing a different desired bar-code marking on each of a plurality of glass workpieces comprising A. providing a strip of sheet material, B. using a focused laser beam, burning openings through said strip to produce a plurality of stencils for stencilling said desired bar-code markings, said stencils being in a sequential arrangement in said strip, C. verifying that said stencils are for said desired markings, D. advancing a succession of workpieces to which a bar-code marking is to be applied. E. contacting one of said stencils with the surface of one of said succession of workpieces, F. applying paint through the openings in said stencil while it is contacting said surface, G. removing said stencil from said surface, H. and repeating steps E, F and G for each of the remaining plurality of workpieces using a different one of said plurality of stencils for each workpiece.
Claim 17
Dependent Claim
18 words
The method defined in claim 13 wherein said workpiece is a glass envelope part for a cathode-ray tube.
Claim 18
Dependent Claim
13 words
The method defined in claim 13 wherein said paint is applied by spraying.
Claim 19
Dependent Claim
13 words
The method defined in claim 13 wherein said paint is applied by squeegeeing.
Claim 20
Dependent Claim
19 words
The method defined in claim 13 wherein said paint is applied by transfer from the surface of a pad.
Claim 21
Dependent Claim
37 words
The method defined in claim 13 including conveying said workpieces in a single file along a first prescribed path and, at steps E, F and G, moving said stencil in substantially constant positioned contact with said surface.
Claim 22
Dependent Claim
49 words
The method defined in claim 18 including conducting said strip along a second prescribed path, at least a portion of which is substantially parallel to said first prescribed path, and conducting steps E, F and G while said stencil is located in said parallel portion of said second path.
Claim 23
Dependent Claim
78 words
The method defined in claim 19 wherein the means for conducting said strip and the means for carrying out steps B and F are supported from a common platform, step E includes moving said platform toward said first path until said stencil contacts said workpiece, step F includes moving said platform in such manner as to maintain said stencil in constant positional contact with said workpiece, and step G includes moving said platform away from said first path.
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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) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |