Patent US4559085A successfully refreshed from Google Patents.
US4559085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing spatters from a pipeline
Assignee: Individual
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Filing: 1984-06-18
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Granted: 1985-12-17
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Expires: 2004-06-18
Abstract
Abstract A method for installing a pipeline having a plurality of pipes, including each pipe having at least one handhole in the wall near at least one of its ends, and a threaded cap for closing the handhole, whereby, when a pipe is joined to another pipe by welding, spatters formed at or near the welded joint can be removed by hand through the handhole.
Inventors
- 👤 Eddy Y. L. Liu
- 👤 Pan F. Rong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:49
CPC Classifications
F; F16; F16L; F16L45/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
The process of installing a pipeline having a plurality of pipes welded together which includes, (a) utilizing pipes each of which has a handhole in its wall near one of its ends which is to be welded to the other, a projecting neck with external screw threads at each handhole and a cap with internal screw threads for each projecting neck, (b) after welding the pipes, removing through the handholes the spatters created in the pipeline due to the welding, (c) threadedly attaching the caps on the respective handholes after removal of the spatters, and (d) welding the ends of each cap around the periphery of the neck.
Claim 2
Dependent Claim
108 words
The process of installing a pipeline having a plurality of pipes welded together which includes, (a) utilizing pipes each of which has a handhole in its wall near one of its ends which is to be welded to the other, a projecting neck with external screw threads at each handhole and a cap with internal screw threads for each projecting neck, (b) after welding the pipes, removing through the handholes the spatters created in the pipeline due to the welding, (c) threadedly attaching the caps on the respective handholes after removal of the spatters, and (d) welding the ends of each cap around the periphery of the neck.
Claim 3
Dependent Claim
19 words
The process as claimed in claim 1, further including (e) installing an instrument or a valve on the cap.
References Cited (Backward Citations)
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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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |