US3926306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for sealing a filled container under vacuum, and vacuum-sealed filled containers
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1973-06-15
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Granted: 1975-12-16
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Expires: 1993-06-15
Abstract
Abstract A method for the manufacture of a closed casing, in which material is stored at a pressure of less than 10 1 torr, characterized in that the casing is sealed in a space in which the pressure is at least equal to the pressure mentioned above.
Inventors
- 👤 Nederveen Hans Bertil Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:17
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02; B65B31/025; B29; B29C; B29C65/00; B29C65/02; B29C66/00; B29C66/001; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/114; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/61; B29C66/612; B65B31/04; B65B31/06; B65B51/00; B65B51/10; B65B51/22; B29C65/06; B29C65/14; B29C65/16; B29C65/1629; B29C65/1632; B29C65/1654; B29C66/70; B29C66/71; B29C66/80; B29C66/82; B29C66/826; B29C66/8266; B29C66/82661
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
A closed and sealed container containing a stored material at a pressure less than 10 1 torr within said container, the container comprising a plurality of walls which surround and define an enclosure, one of said walls comprising a solid and generally flat outer layer of said stored material fused and sealed to adjacent walls of said remaining walls.
Claim 2
Dependent Claim
59 words
A closed and sealed container containing a stored material at a pressure less than 10 1 torr within said container, the container comprising a plurality of walls which surround and define an enclosure, one of said walls comprising a solid and generally flat outer layer of said stored material fused and sealed to adjacent walls of said remaining walls.
Claim 3
Independent Claim
122 words
A method for closing and seAling a container which contains a material therein to be stored at a pressure less than 10 1 torr, said container formed by walls having edges which define an opening of the container to be closed and sealed, and said material therein having a top layer adjacent said opening, the method comprising the steps of placing said container with said material therein in a chamber, reducing the pressure within said chamber to less than 10 1 torr and, while at said pressure, fusing and subsequently solidifying said top layer of the material thus forming said layer into a top wall of said container, and fusing said top wall of said edges to close and seal said opening.
Claim 4
Independent Claim
122 words
A method for closing and seAling a container which contains a material therein to be stored at a pressure less than 10 1 torr, said container formed by walls having edges which define an opening of the container to be closed and sealed, and said material therein having a top layer adjacent said opening, the method comprising the steps of placing said container with said material therein in a chamber, reducing the pressure within said chamber to less than 10 1 torr and, while at said pressure, fusing and subsequently solidifying said top layer of the material thus forming said layer into a top wall of said container, and fusing said top wall of said edges to close and seal said opening.
Claim 5
Dependent Claim
41 words
A method according to claim 2 wherein fusing said top layer comprises directing onto said top layer the beam of an electron beam welding device which is within said chamber and operating under said pressure of less than 10 1 torr.
Claim 6
Dependent Claim
29 words
A method according to claim 2 wherein said material comprises a fusible substance as said top layer thereof and a non-fusible substance as the remainder below said top layer.
Claim 7
Dependent Claim
18 words
A method according to claim 2 wherein said top layer has substantially the same composition as said container.
Claim 8
Dependent Claim
36 words
A method according to claim 2 wherein said container has at least one additional opening similar to said first opening, comprising the further steps of closing and sealing said additional opening similarly to said first opening.
Claim 9
Dependent Claim
14 words
A method according to claim 2 wherein said material is present in powdered form.
Claim 10
Dependent Claim
24 words
A method according to claim 7 comprising the further step of fixing said powdered material in said container prior to said fusing of same.
Claim 11
Dependent Claim
22 words
A method according to claim 8 wherein said material is magnetizable, and wherein fixing said material comprises applying a magnetic field thereto.
Claim 12
Dependent Claim
24 words
A method according to claim 2 comprising the further step of forming said material into tablet-shaped elements prior to placing same in said container.
Claim 13
Dependent Claim
21 words
A method according to claim 7 comprising the further step of vibrating said container and material therein prior to said fusing.
Claim 14
Dependent Claim
18 words
A method according to claim 2 wherein said fusing comprises directing a laser beam onto said top layer.
Claim 15
Dependent Claim
17 words
A method according to claim 2 wherein said fusing comprises providing heat with a friction welding device.
Claim 16
Dependent Claim
70 words
A closed container sealed according to the method of claim 2, and containing a stored material at a pressure within said container less than 10 1 torr, said container comprising a plurality of walls which surround and define an enclosure, one of said walls comprising said fused top layer of said stored material, said top layer being generally flat and unobstructed and sealed to adjacent walls of said remaining walls.
Claim 17
Dependent Claim
19 words
A closed container according to claim 14 wherein said top layer and said container comprise substantially the same composition.
Claim 18
Dependent Claim
31 words
A closed container according to claim 14 wherein said stored material comprises a fusible substance as said top layer thereof and a non-fusible substance as the remainder below said top layer.
References Cited (Backward Citations)
US2806595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |