Patent US1474253A successfully refreshed from Google Patents.
US3770547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color bond surveillance system
Assignee: R & G Sloane Manufacturing Co Inc us
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Filing: 1971-05-14
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Granted: 1973-11-06
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Expires: 1991-05-14
Abstract
Abstract A color bond surveillance system to ensure that adequate adhesive bonding has been accomplished between two surfaces where such adequate adhesive bonding requires the application of separate coatings to each of the mating surfaces, such as a primer coating in addition to the adhesive coating, wherein one of the items being bonded contains a first color-precursor compound, the coatings separately applied to each of the mating surfaces contain a second color-precursor compound, and the adhesive coating applied over the first coating contains at least a third color-precursor compound. The at least three colorprecursor compounds are co-reactive to produce a desired color different from the colors of the precursors and coating compositions when the coated surfaces are mated, thereby demonstrating proper adhesive installation. A method for ensuring proper application of separate liquid coatings required to accomplish the satisfactory adhesion of two mating surfaces, comprising incorporating into one of the items providing one of the mating surfaces a first color-precursor compound, incorporating a second color-precursor compound into the coatings applied directly to each of the mating surfaces, incorporating at least a third color-precursor compound into the adhesive coating applied over one of the coatings applied directly to one of the mating surfaces, and super-imposing the coated surfaces.
Inventors
- 👤 D Kelsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:11
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/04; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31536
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
25 words
applying to said second surface of said second item, which is free from said first color-precursor, a first liquid coating containing said second color-precursor compound;
Claim 2
Dependent Claim
32 words
The method of claim 1 in which the first color-precursor compound is a phenolic coupler, the second color-precursor compound is a diazo base, and the third color-precursor compound is an alkaline buffer.
Claim 3
Dependent Claim
13 words
incorporating a second color-precursor compound into each of the first directly-applied coatings; and
Claim 4
Dependent Claim
25 words
applying to said second surface of said second item, which is free from said first color-precursor, a first liquid coating containing said second color-precursor compound;
Claim 5
Dependent Claim
36 words
applying over said first coating on said second surface, a liquid adhesive coating containing at least a third color-precursor compound, said first, secOnd, and at least third color-precursor compounds being reactive to produce a desired color;
Claim 6
Dependent Claim
14 words
The method of claim 2 in which the alkaline buffer is an alkyl amine.
Claim 7
Dependent Claim
70 words
incorporating at least a third color-precursor compound into the second liquid coating; said first, second, and at least third color-precursor compounds being reactive to produce a desired color and said second color-precursor compound being incorporated into each of the first directly-applied coatings in an amount of at least about 50 percent, but substantially less than, that required to react with the other available color-precursor compounds to produce the desired color.
Claim 8
Dependent Claim
89 words
applying over said first coating on at least one of said surfaces a liquid adhesive coating containing at least a third color-precursor compound, said first, second, and at least third color-precursor compounds being reactive to produce a desired color, and said second color-precursor compound being present in each of the first liquid coatings applied to said first and second surfaces in an amount of at least about 50 percent, but substantially less than, that required to react with the other available color-precursor compounds to produce the desired color; and
Claim 9
Dependent Claim
6 words
superimposing said surfaces bearing said coatings.
Claim 10
Dependent Claim
27 words
The method of claim 1 in which the two items are respectively plastic fitting and plastic pipe and the first color-precursor is incorporated into the plastic fitting.
Claim 11
Dependent Claim
6 words
superimposing said surfaces bearing said coatings.
Claim 12
Dependent Claim
27 words
The method of claim 2 in which the two items are respectively plastic fitting and plastic pipe and the first color-precursor is incorporated into the plastic fitting.
Claim 13
Dependent Claim
27 words
The method of claim 3 in which the two items are respectively plastic fitting and plastic pipe and the first color-precursor is incorporated into the plastic fitting.
Claim 14
Dependent Claim
14 words
The method of claim 6 in which the aLkyl amine is a primary amine.
Claim 15
Dependent Claim
14 words
The method of claim 6 in which the alkyl amine is a tertiary amine.
Claim 16
Dependent Claim
16 words
The method of claim 4 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 17
Dependent Claim
16 words
The method of claim 5 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 18
Dependent Claim
16 words
The method of claim 6 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 19
Dependent Claim
65 words
In a method for adhesively bonding a first surface of a first item to a second surface of a second item wherein effective bonding requires the separate application of a first liquid coating directly to each of said surfaces and a second liquid coating over one of the first directly-applied coatings, at least the second liquid coating being a liquid adhesive composition, the improvement comprising:
Claim 20
Dependent Claim
28 words
The method of claim 12 in which the liquid adhesive coating containing the at least third color-precursor compound is applied over the first coating on said second surface.
Claim 21
Dependent Claim
32 words
The method of claim 13 in which the first color-precursor compound is a phenolic coupler, the second color-precursor compound is a diazo base, and the third color-precursor compound is an alkaline buffer.
Claim 22
Dependent Claim
14 words
The method of claim 14 in which the alkaline buffer is an alkyl amine.
Claim 23
Dependent Claim
21 words
The method of claim 13 in which the first item is a plastic fitting and the second item is plastic pipe.
Claim 24
Dependent Claim
21 words
The method of claim 14 in which the first item is a plastic fitting and the second item is plastic pipe.
Claim 25
Dependent Claim
21 words
The method of claim 15 in which the first item is a plastic fitting and the second item is plastic pipe.
Claim 26
Dependent Claim
16 words
The method of claim 16 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 27
Dependent Claim
16 words
The method of claim 17 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 28
Dependent Claim
16 words
The method of claim 18 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 29
Dependent Claim
14 words
The method of claim 21 in which the alkyl amine is a primary amine.
Claim 30
Dependent Claim
14 words
The method of claim 21 in which the alkyl amine is a tertiary amine.
Claim 31
Dependent Claim
63 words
In a method for adhesively bonding a first surface of a first item to a second surface of a second item wherein effective bonding requires the separate application of first liquid coatings to each of said surfaces and a second liquid coating over one of said first liquid coatings, at least the second liquid coating being a liquid adhesive composition, the improvement comprising:
Claim 32
Dependent Claim
52 words
The method of claim 24 in which the first liquid coating applied to the first and second surfaces each contain the second color-precursor compound in an amount of at least about 50 percent, but substantially less than, that required to react with the other available color-precursor compounds to produce the desired color.
Claim 33
Dependent Claim
32 words
The method of claim 24 in which the first color-precursor compound is a phenolic coupler, the second color-precursor compound is a diazo base, and the third color-precursor compound is an alkaline buffer.
Claim 34
Dependent Claim
14 words
The method of claim 26 in which the alkaline buffer is an alkyl amine.
Claim 35
Dependent Claim
21 words
The method of claim 24 in which the first item is a plastic fitting and the second item is plastic pipe.
Claim 36
Dependent Claim
21 words
The method of claim 26 in which the first item is a plastic fitting and the second item is plastic pipe.
Claim 37
Dependent Claim
16 words
The method of claim 28 in which the plastic fitting is made of transparent polyvinyl chloride.
Claim 38
Dependent Claim
14 words
The method of claim 27 in which the alkyl amine is a primary amine.
Claim 39
Dependent Claim
14 words
The method of claim 27 in which the alkyl amine is a tertiary amine.
Claim 40
Dependent Claim
14 words
The method of claim 24 in which said first liquid coatings are primer coatings.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |