Patent US3765983A successfully refreshed from Google Patents.
US3765983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for solvent welding plastic pipe joints
Assignee: R & G Sloane Manufacturing Co Inc us
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Filing: 1971-03-10
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Granted: 1973-10-16
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Expires: 1991-03-10
Abstract
Abstract Leak-free plastic pipe joints are made by methods which utilize specially-designed applicators for applying the primer and solvent cement coatings. Full and thorough coatings are obtained on the mating surfaces of the pipe and fitting, and solvent evaporation prior to joining of these two members is deterred.
Inventors
- 👤 C Putzier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/48; B29C65/52; B29C65/526; B29C65/4895; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/5229; B29C66/52291; B29C66/52292; B29C65/522; B29C65/523; B29C66/70; B29C66/71
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
In a method as claimed in claim 1, the additional steps of: a. rotating said first solvent applicator while in contact with the annular portion of the mating surface of said one member; and b. rotating said second solvent applicator while in contact with the annular portion of the mating surface of said other member.
Claim 2
Dependent Claim
55 words
In a method as claimed in claim 2, the additional steps of: a. reciprocating said first solvent applicator while in contact with the annular portion of the mating surface of said one member; and b. reciprocating said second solvent applicator while in contact with the annular portion of the mating surface of said other member.
Claim 3
Dependent Claim
18 words
In a method as claimed in claim 3, wherein: a. said solvent coating is a solvent cement coating.
Claim 4
Dependent Claim
101 words
In a method as claimed in claim 1, wherein: a. said solvent coating is applied simultaneously to substantially the entire mating surface of one of said members by the use of a first solvent applicator having an outer solvent-holding surface which is sized to contact simultaneously the entire mating surface of said one member; and b. said solvent coating is applied simultaneously to substantially the entire mating surface of the other of said members by the use of a second solvent applicator having an inner solvent-holding surface which is sized to contact simultaneously the entire mating surface of said other member.
Claim 5
Dependent Claim
80 words
In a method as claimed in claim 5, the additional steps of: a. permitting said first solvent applicator to remaIn in contact with the mating surface of said one of said members after the application of the coating thereto, while said solvent coating is applied to the other of said members; and b. removing said first solvent applicator from said contact with said mating surface of said one of said members just prior to bringing the afore-said members into union.
Claim 6
Dependent Claim
18 words
In a method as claimed in claim 6, wherein: a. said solvent coating is a solvent cement coating.
Claim 7
Dependent Claim
18 words
In a method as claimed in claim 6, wherein: a. said solvent coating is a solvent primer coating.
Claim 8
Dependent Claim
61 words
In a method as claimed in claim 6, wherein: a. the coating applied to both of said members is a solvent primer; and comprising the additional step of: b. applying a solvent cement coating to the mating surface of the other of said members subsequent to the application of said solvent primer and prior to bringing the aforesaid members into union.
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |