Patent US4014368A successfully refreshed from Google Patents.
US4014368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flange protector
Assignee: Essentra Plastics LLC
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Filing: 1976-02-13
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Granted: 1977-03-29
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Expires: 1996-02-13
Abstract
Abstract A one piece protector for the machined surface of a flange for pipes and valves which may be installed and removed by finger pressure on integral thimbles which frictionally engage the bores of the bolt holes of the flange.
Inventors
- 👤 John E. Nelsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:40
CPC Classifications
F; F16; F16L; F16L57/00; F16L57/005; B; B65; B65D; B65D59/00; B65D59/02; B65D59/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
169 words
A flange of the type having an inner annular machined surface surrounded by an outer surface with bolt holes extending through said flange, and a protector comprising a single piece of flexible impact resistant material having a. a cover extending over and around said inner surface with an edge of the cover engaging said outer surface b. an outer section integral with the cover and extending over the bolt holes and engaging said outer surface of the flange c. hollow thinble-like fasteners having i open upper ends ii hollow body portions depending from said outer section and received in said holes by finger pressure on said upper ends and making a fastening by friction contact with the bores of said holes iii and the lower ends of said body portions when received in said holes being accessible to finger pressure for pushing the fasteners out of the holes, said fasteners when received in said holes pulling the flange protector into conforming contact with the outer surface of the flange.
Claim 2
Dependent Claim
169 words
A flange of the type having an inner annular machined surface surrounded by an outer surface with bolt holes extending through said flange, and a protector comprising a single piece of flexible impact resistant material having a. a cover extending over and around said inner surface with an edge of the cover engaging said outer surface b. an outer section integral with the cover and extending over the bolt holes and engaging said outer surface of the flange c. hollow thinble-like fasteners having i open upper ends ii hollow body portions depending from said outer section and received in said holes by finger pressure on said upper ends and making a fastening by friction contact with the bores of said holes iii and the lower ends of said body portions when received in said holes being accessible to finger pressure for pushing the fasteners out of the holes, said fasteners when received in said holes pulling the flange protector into conforming contact with the outer surface of the flange.
Claim 3
Dependent Claim
14 words
The structure of claim 1 in which the material of the protector is polyethlene.
Claim 4
Dependent Claim
25 words
The structure of claim 1 in which the thimble-like fasteners are in outwardly extending ears having lower surfaces coplanar with said edge of the cover.
References Cited (Backward Citations)
US1903220A
Cited
US2028576A
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US2082144A
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US3921673A
Cited
US3942680A
Cited
US3942680B1
Cited
US3942681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |