US3668030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making mating male embossing rolls
Assignee: FRANK W BRODERICK
•
Filing: 1970-09-08
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Granted: 1972-06-06
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Expires: 1990-09-08
Abstract
Abstract A method for manufacture of a male embossing roll which registers exactly with another male embossing roll, which comprises forming in the second roll a mating female pattern, filling the female pattern depressions with resist, and then etching, thereby to produce a male design corresponding to the female design. The filling of the preliminarily formed female design by a resist comprising chrome plating is a preferred embodiment, the entire roll being chrome plated after the formation of the female design, the chrome plate then being removed from the surface of the roll except in those areas corresponding to the depressions in the female pattern previously formed therein.
Inventors
- 👤 Frank W Broderick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; B; B23; B23P; B23P15/00; B23P15/24
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
52 words
The method of Claim 1, in which Step 4 comprises a substantially continuous etching operation carried on for a period of time sufficient to cause said resist-covered surfaces to project out from the rest of said roll for a distance of at least about five times the depth of said shallow recesses.
Claim 2
Dependent Claim
23 words
Forming in the second roll a female pattern comprising one or more shallow recesses mating with said male pattern on said one roll;
Claim 3
Dependent Claim
16 words
Providing etch resist material in said recesses so as to cover the bottom surface thereof; and
Claim 4
Dependent Claim
73 words
The method of claim 2, in which said male pattern on said one roll comprises portions extending out from said roll a given distance, said shallow recess of said female pattern after Step 2 have a depth no more than one-tenth of said given distance, and said resist-covered surfaces project out from the rest of said second roll after Step 4 by a distance of at least about one-quarter of said given distance.
Claim 5
Dependent Claim
17 words
The method of claim 3, in which, in Step 3, said etch resist substantially fills said recesses.
Claim 6
Dependent Claim
37 words
Subjecting said second roll to etching until said resist-covered bottom surfaces project out from the rest of said second roll, thereby to define a male pattern on said second roll mating with that on said first roll.
Claim 7
Dependent Claim
24 words
The method of claim 3, in which said roll is metal and said etch resist comprises a layer of plated metal on said roll.
Claim 8
Dependent Claim
13 words
The method of claim 5, in which said roll is plated with chromium.
Claim 9
Dependent Claim
41 words
The Method of claim 5, in wich Step 3 comprises metal plating the recesses and the roll surface around said recesses, followed by removing said metal plating from the roll surface around said recesses while leaving said plating in said recesses.
Claim 10
Dependent Claim
13 words
The method of claim 7, in which said roll is plated with chromium.
Claim 11
Dependent Claim
73 words
The method of claim 1, in which said male pattern on said one roll comprises portions extending out from said roll a given distance, said shallow recess of said female pattern after Step 2 having a depth no more than one-tenth of said given distance, and said resist-covered surfaces project out from the rest of said second roll after Step 4 by a distance of at least about one-quarter of said given distance.
Claim 12
Dependent Claim
17 words
The method of claim 9, in which, in Step 3, said etch resist substantially fills said recesses.
Claim 13
Dependent Claim
24 words
The method of claim 9, in which said roll is metal and said etch resist comprises a layer of plated metal on said roll.
Claim 14
Dependent Claim
13 words
The method of claim 11, in which said roll is plated with chromium.
Claim 15
Dependent Claim
41 words
The method of claim 9, in which Step 3 comprises metal plating the recesses and the roll surface around said recesses, followed by removing said metal plating from the roll surface around said recesses while leaving said plating in said recesses.
Claim 16
Dependent Claim
13 words
The method of claim 13, in which said roll is plated with chromium.
Claim 17
Dependent Claim
17 words
The method of claim 1, in which, in Step 3, said etch resist substantially fills said recesses.
Claim 18
Dependent Claim
24 words
The method of claim 1, in which said roll is metal and said etch resist comprises a layer of plated metal on said roll.
Claim 19
Dependent Claim
13 words
The method of claim 16, in which said roll is plated with chromium.
Claim 20
Dependent Claim
41 words
The method of claim 1, in which Step 3 comprises metal plating the recesses and the roll surface around said recesses, followed by removing said metal plating from the roll surface around said recesses while leaving said plating in said recesses.
Claim 21
Dependent Claim
13 words
The method of claim 18, in which said roll is plated with chromium.
Claim 22
Dependent Claim
24 words
The method of claim 1, in which said roll is metal and said etch resist comprises a layer of plated metal on said roll.
References Cited (Backward Citations)
US2662002A
Cited
US3268378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |