US3672403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cap and sealing means therefor
Assignee: Dover Corp
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Filing: 1970-07-27
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Granted: 1972-06-27
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Expires: 1990-07-27
Abstract
Abstract A cap and sealing means therefor for capping and sealing the end of a pipe is disclosed. The cap includes a pair of pivotally mounted locking arms for coengagement with an adaptor ring, the adaptor ring being mounted on the end of the cap to be sealed. The locking arms and adaptor ring have cooperative flat surfaces to insure a firm lock. A sealing ring is mounted in the cap for sealing engagement with the flat portion of the adaptor ring when the cap and adaptor ring are in locking engagement. Each locking arm is pivotally interconnected with a single movable element wherein movement of the single element permits engagement or disengagement of the locking arms with the adaptor ring.
Inventors
- 👤 Fred A Wilson
- 👤 Norman T Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/115; F16L55/1157
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
181 words
Apparatus for closing the end of a pipe, comprising an adaptor ring for connection to the end of a pipe, a circumferential flange on said adaptor ring extending radially outwardly therefrom and having opposed surfaces, a cap adapted to be mounted over the end of said ring to close the end of said pipe, sealing means in said cap to engage one of said opposed surfaces of said flange when said cap is placed over said ring, said sealing means comprising a circumferential gasket having an L-shaped cross-sectional configuration, one leg of said L-shaped gasket extending downwardly beyond the bottom of said cap to engage and seal with said one surface of aid flange, the other leg of said L-shaped gasket extending radially outwardly into engagement with an annular wall in said cap, annular ring means secured to said cap adjacent said annular wall and engaged with the underside of said radially extending leg of said L-shaped gasket to hold said gasket in place in said cap, and locking means on said cap to lock said cap to said adaptor ring.
Claim 2
Dependent Claim
181 words
Apparatus for closing the end of a pipe, comprising an adaptor ring for connection to the end of a pipe, a circumferential flange on said adaptor ring extending radially outwardly therefrom and having opposed surfaces, a cap adapted to be mounted over the end of said ring to close the end of said pipe, sealing means in said cap to engage one of said opposed surfaces of said flange when said cap is placed over said ring, said sealing means comprising a circumferential gasket having an L-shaped cross-sectional configuration, one leg of said L-shaped gasket extending downwardly beyond the bottom of said cap to engage and seal with said one surface of aid flange, the other leg of said L-shaped gasket extending radially outwardly into engagement with an annular wall in said cap, annular ring means secured to said cap adjacent said annular wall and engaged with the underside of said radially extending leg of said L-shaped gasket to hold said gasket in place in said cap, and locking means on said cap to lock said cap to said adaptor ring.
Claim 3
Dependent Claim
70 words
Apparatus as in claim 1, wherein said annular wall depends from the periphery of said cap and the lower portion thereof is diametrically enlarged relative to the upper portion thereof to define an annular downwardly facing shoulder thereon, the radially extending leg of said gasket engaged with said upper portion and the width of the upper portion being communsurate with the width of said radially extending leg of said gasket.
Claim 4
Dependent Claim
25 words
Apparatus as in claim 2, wherein said annular ring means is positioned against the lower portion of said wall and against said downwardly facing shoulder.
Claim 5
Dependent Claim
15 words
Apparatus as in claim 3, wherein said annular ring means is press-fitted to said cap.
Claim 6
Dependent Claim
28 words
Apparatus as in claim 4, wherein said annular ring means is rectangular in cross-section, with the longest dimension thereof parallel to said downwardly extending leg of said gasket.
Claim 7
Dependent Claim
12 words
Apparatus as in claim 4, wherein said gasket is made from buna-n.
Claim 8
Dependent Claim
44 words
Apparatus as in claim 1, wherein the extreme lower end of the downwardly extending leg of said gasket is a substantially flat surface, and said one surface of said flange is substantially flat, said flat surfaces engaging with one another to effect said seal.
Claim 9
Dependent Claim
36 words
Apparatus as in claim 1, wherein the locking means includes means engaging said flange on said adaptor ring to urge said cap toward said adaptor ring and lock said gasket in sealing engagement with said flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |