US4025371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding containers
Assignee: Bielomatik Leuze GmbH and Co KG
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Filing: 1976-03-01
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Granted: 1977-05-24
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Expires: 1996-03-01
Abstract
Abstract A welding apparatus for welding covers to containers, such as battery casings by pressing the cover on to the casing is provided with a testing device which includes a connector adjacent the pressing-on device and adapted to connect with an opening in the cover. The testing device is adapted to monitor the pressure inside the container after the latter has been charged with fluid under pressure at the end of the welding operation. Any fall in pressure is indicative of a leak at the welded seam.
Inventors
- 👤 Ernst Pecha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:04
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1429; B29C65/1432; B29C65/18; B29C65/20; B29C65/78; B29C65/7841; B29C65/7858; B29C65/7861; B29C65/82; B29C65/8207; B29C65/8246; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/32; B29C66/50; B29C66/51; B29C66/54; B29C66/542; B29C66/63; B29C66/632; B29C66/80; B29C66/81; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; H; H01; H01M; H01M50/00; H01M50/10; H01M50/147; H01M50/166; H01M50/169; B29L; B29L2031/00; B29L2031/712; B29L2031/7146; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/4911
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
72 words
Apparatus for welding covers to containers, said covers having at least one opening therein, which apparatus comprises: means for pressing the covers onto the containers and for forming a weld seam therebetween; pressure monitoring means; and pressure connection means arranged in the region of said pressing-on means for connecting said monitoring means to said cover opening for testing the container for leaks under pressure while said container remains in said welding apparatus.
Claim 2
Dependent Claim
72 words
Apparatus for welding covers to containers, said covers having at least one opening therein, which apparatus comprises: means for pressing the covers onto the containers and for forming a weld seam therebetween; pressure monitoring means; and pressure connection means arranged in the region of said pressing-on means for connecting said monitoring means to said cover opening for testing the container for leaks under pressure while said container remains in said welding apparatus.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1, including a source of pressure medium which is connectable to the pressure connector means.
Claim 4
Dependent Claim
73 words
Apparatus for welding covers to containers having at least one opening therein, which apparatus comprises: means for pressing said covers onto said containers and for forming a weld seam therebetween; pressure monitoring means; and pressure connector means arranged in the region of said pressing-on means for connecting said monitoring means to said cover opening for testing the container for leaks under pressure whilst the pressing-on means is pressing the cover against the container.
Claim 5
Dependent Claim
73 words
Apparatus for welding covers to containers having at least one opening therein, which apparatus comprises: means for pressing said covers onto said containers and for forming a weld seam therebetween; pressure monitoring means; and pressure connector means arranged in the region of said pressing-on means for connecting said monitoring means to said cover opening for testing the container for leaks under pressure whilst the pressing-on means is pressing the cover against the container.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 3, in which said pressure connector means includes at least one connection head which is provided with a pressure medium supply line and seal means for abutment against the cover.
Claim 7
Dependent Claim
41 words
Apparatus according to claim 1, further comprising at least one closure member connected to said pressure connector means, said at least one closure member adapted to cooperate with an additional opening in the cover for the purpose of sealing the cover.
Claim 8
Dependent Claim
33 words
Apparatus according to claim 4 in which the pressure connector means has a plurality of individually sprung mounted connection heads, for directing said pressure medium to a plurality of openings in said containers.
Claim 9
Dependent Claim
32 words
Apparatus according to claim 5 in which the pressure connector means is further provided with a plurality of individually sprung mounted closure members, for sealing a plurality of openings in said containers.
Claim 10
Dependent Claim
24 words
Apparatus according to claim 3, further comprising an actuating device for pressing the pressure connector means against the cover independently of said pressing-on means.
Claim 11
Dependent Claim
32 words
Apparatus according to claim 4 further comprising a carrier on which said at least one connection head is arranged, said carrier being separate from said pressing-on means and being movable relative thereto.
Claim 12
Dependent Claim
36 words
Apparatus according to claim 9 including means guidably supporting the carrier on said pressing-on means and an actuating device effective between said carrier and said pressing-on means for pressing said pressure connector means against said cover.
Claim 13
Independent Claim
76 words
A method of welding covers to containers and testing the weld, comprising the steps of: utilizing pressing-on means to press a cover onto a container; welding a seam therebetween; pressurizing the welded container whilst the pressing-on means is still in its pressing-on position; connecting pressure monitoring means to the pressurized container; and observing the pressure in the container to detect any pressure drop therein, said pressure drop being indicative of a leak at the welded seam.
Claim 14
Independent Claim
76 words
A method of welding covers to containers and testing the weld, comprising the steps of: utilizing pressing-on means to press a cover onto a container; welding a seam therebetween; pressurizing the welded container whilst the pressing-on means is still in its pressing-on position; connecting pressure monitoring means to the pressurized container; and observing the pressure in the container to detect any pressure drop therein, said pressure drop being indicative of a leak at the welded seam.
Claim 15
Dependent Claim
22 words
A method according to claim 11 in which the pressurizing of the container is commenced directly after the seam has been welded.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |