Patent US4222576A successfully refreshed from Google Patents.
US4222576A
Expired / Lapsed
US
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Sealing device
Assignee: MODERN PRECISION ENGINEERS AND ASSOC Ltd
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Filing: 1979-02-06
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Granted: 1980-09-16
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Expires: 1999-02-06
Abstract
Abstract A sealing device for providing a hermetic seal, for example between the body and lid of a container, comprises elongate interengageable sealing members of respectively male and female form in transverse cross-section, the two members being arranged to define an enclosed space extending lengthwise between them when interengaged, and means for drawing and holding a vacuum in such space to bring the members into sealing engagement along their lengths.
Inventors
- 👤 Harold J. Clements
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:53
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2015; F; F16; F16J; F16J15/00; F16J15/02; F16J15/46; F16L; F16L25/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
70 words
A sealing device comprising two interengageable elongate members of which at least one has a resilient sealing surface extending therealong for sealing engagement with the other member, the two members being arranged to define a substantially enclosed space extending lengthwise therebetween when they are interengaged, and means associated with one of the members for evacuating said space so as to cause sealing engagement of the two members along their lengths.
Claim 2
Dependent Claim
70 words
A sealing device comprising two interengageable elongate members of which at least one has a resilient sealing surface extending therealong for sealing engagement with the other member, the two members being arranged to define a substantially enclosed space extending lengthwise therebetween when they are interengaged, and means associated with one of the members for evacuating said space so as to cause sealing engagement of the two members along their lengths.
Claim 3
Dependent Claim
13 words
A device as claimed in claim 1, wherein said elongate members are endless.
Claim 4
Dependent Claim
19 words
A device as claimed in claim 1 or 2, wherein at least one of said elongate members is flexible.
Claim 5
Dependent Claim
21 words
A device as claimed in claim 3, wherein the cross-sections of said elongate members are configured to interlock with one another.
Claim 6
Dependent Claim
23 words
A device as claimed in claim 1, including a pipe and wherein one of said elongate members comprises the end of said pipe.
Claim 7
Dependent Claim
29 words
A device as claimed in claim 1, including a rigid or semi-rigid vessel and wherein one of said elongate members comprises the rim around the opening of said vessel.
Claim 8
Dependent Claim
30 words
A device as claimed in claim 6, including a flexible member adapted to close said opening and wherein the other of said elongate members is provided on said flexible member.
Claim 9
Dependent Claim
38 words
A device as claimed in claim 1, including a jointing ring or band and wherein one of said elongate members is provided on said jointing ring or band, the latter also provided with a further such elongate member.
Claim 10
Dependent Claim
22 words
A device as claimed in claim 1, wherein the said elongate members are of generally male and female configuration in transverse cross-section.
Claim 11
Dependent Claim
31 words
A device as claimed in claim 9, wherein the female one of said elongate members comprises a pair of lips which in use extend on each side of the male member.
Claim 12
Dependent Claim
27 words
A device as claimed in claim 10, wherein the said male member has a pair of shoulders arranged in use to engage the ends of the lips.
Claim 13
Dependent Claim
39 words
A device as claimed in claim 10 or 11, wherein the inside surfaces of the said lips are corrugated so that, in use, said lips are in sealing contact with said male member at a plurality of discrete areas.
Claim 14
Dependent Claim
28 words
A device as claimed in claim 12, wherein the said male member has a plurality of apertures therethrough to facilitate evacuation of the space on both sides thereof.
Claim 15
Dependent Claim
30 words
A device as claimed in claim 10, wherein said male member has an enlarged head adapted to be received in a recess at the intermost region of the female member.
Claim 16
Dependent Claim
35 words
A device as claimed in claim 10, wherein the said evacuating means extends laterally through one of the said lips, whereby the lips are drawn inwardly into sealing contact with the male member upon evacuation.
Claim 17
Dependent Claim
63 words
A device as claimed in claim 10, wherein the said evacuating means extends through the female member at the root of and between the said lips and at least the leading end of the male member is wider than the spacing between the lips, whereby the male member is drawn into the female member between the lips in sealing engagement therewith upon evacuation.
Claim 18
Dependent Claim
55 words
A device as claimed in claim 16, wherein the said female member is closely fitted into a channel-shaped termination of an article which is to be sealed, such as the lip of a container, said termination including an exposed floor portion, the said evacuating means extending through said externally exposed floor portion of said termination.
Claim 19
Dependent Claim
35 words
A device as claimed in claim 17, said termination including a side wall area, wherein at least one of the said lips is corrugated on its outside face for sealing engagement with said side wall.
Claim 20
Dependent Claim
16 words
A device as claimed in claim 1, wherein the said evacuating means includes a one-way valve.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |