Patent US4752350A successfully refreshed from Google Patents.
US4752350A
Expired / Lapsed
US
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Device for making welded corner joints
Assignee: URBAN & Co MASCHINENBAU KG Firma GmbH
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Filing: 1986-11-13
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Granted: 1988-06-21
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Expires: 2006-11-13
Abstract
Abstract In the manufacture of welded corner joints between hollow plastic sections shaped parts are used which abut against the plastic sections during the heating-up operation and also during the welding process. In this way the result is achieved that the weld bead or plastic rim which forms during the welding, is pressed into the hollow cavity (19) or into the hollow cavities so that a subsequent operation for the purpose of removing the weld bead is not necessary.
Inventors
- 👤 Helmut Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:21
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C37/00; B29C37/02; B29C37/04; B29C65/24; B29C65/30; B29C65/305; B29C65/72; B29C65/78; B29C65/7841; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/116; B29C66/1162; B29C66/32; B29C66/324; B29C66/328; B29C66/3282; B29C66/50; B29C66/51; B29C66/52; B29C66/524; B29C66/5243; B29C66/52431; B29C66/70; B29C66/72; B29C66/725; B29C66/7252; B29C66/72523; B29C66/80; B29C66/81; B29C66/816; B29C66/8167; B29C66/03; B29C66/032; B29C66/0326; B29C66/5244; B29C66/52441; B29C66/812; B29C66/8122; B29L; B29L2031/00; B29L2031/001; B29L2031/003; B29L2031/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A device for making welded corner joints between hollow plastic sections suitable for use as window frames, comprising a welding framework, and welding plate removably supported in the welding framework, means to move the plate into and out of an operating position in the framework, and shaped parts, contoured to co-operate with the shape of the plastic sections to be welded in a region of mitred surfaces thereof, the welding plate and the shaped parts together defining an envelope substantially to enclose end portions of the plastic sections including the surfaces to be welded wherein the weld joint has an inner corner and the shaped parts associated with the inner corner of the weld joint are shaped like a wedge.
Claim 2
Independent Claim
120 words
A device for making welded corner joints between hollow plastic sections suitable for use as window frames, comprising a welding framework, and welding plate removably supported in the welding framework, means to move the plate into and out of an operating position in the framework, and shaped parts, contoured to co-operate with the shape of the plastic sections to be welded in a region of mitred surfaces thereof, the welding plate and the shaped parts together defining an envelope substantially to enclose end portions of the plastic sections including the surfaces to be welded wherein the weld joint has an inner corner and the shaped parts associated with the inner corner of the weld joint are shaped like a wedge.
Claim 3
Dependent Claim
22 words
Device as claimed in claim 1, wherein the welding plate is shaped such that its outlines match outlines of the plastic sections.
Claim 4
Dependent Claim
16 words
Device as claimed in claim 2 wherein the shaped parts are provided with a heating device.
Claim 5
Dependent Claim
32 words
Device as claimed in claim 1, wherein the means to move the plate includes a guide which is associated with an essentially flat outer face of the plastic sections to be welded.
Claim 6
Dependent Claim
35 words
Device as claimed in claim 4, wherein the shaped parts together have a U-shaped formation and surround the weld on three sides, while the guide of the welding plate is disposed on the fourth side.
Claim 7
Independent Claim
123 words
A device for making welded corner joints between hollow plastic sections suitable for use as window frames, comprising a welding framework, and welding plate removably supported in the welding framework, means to move the plate into and out of an operating position in the framework, and shaped parts, contoured to co-operate with the shape of the plastic sections to be welded in a region of mitred surfaces thereof, the welding plate and the shaped parts together defining an envelope substantially to enclose end portions of the plastic sections including the surfaces to be welded wherein the weld joint has an outer corner and the shaped parts associated with the outer corner of the weld joint have interengaging means in the form of grooves.
Claim 8
Independent Claim
123 words
A device for making welded corner joints between hollow plastic sections suitable for use as window frames, comprising a welding framework, and welding plate removably supported in the welding framework, means to move the plate into and out of an operating position in the framework, and shaped parts, contoured to co-operate with the shape of the plastic sections to be welded in a region of mitred surfaces thereof, the welding plate and the shaped parts together defining an envelope substantially to enclose end portions of the plastic sections including the surfaces to be welded wherein the weld joint has an outer corner and the shaped parts associated with the outer corner of the weld joint have interengaging means in the form of grooves.
Claim 9
Dependent Claim
17 words
The device as claimed in claim 6 wherein the shaped parts are provided with a heating device.
Claim 10
Dependent Claim
23 words
The device as claimed in claim 6 wherein the welding plate is shaped such that its outlines match outlines of the plastic sections.
Claim 11
Dependent Claim
33 words
The device as claimed in claim 6 wherein the means to move the plate includes a guide which is associated with an essentially flat outer face of the plastic sections to be welded.
Claim 12
Dependent Claim
37 words
The device as claimed in claim 9 wherein the shaped parts together have a U-shaped formation and surround the weld on the three sides, while the guide of the welding plate is disposed on the fourth side.
References Cited (Backward Citations)
US2886482A
Cited
US2972371A
Cited
US3013925A
Cited
US3853655A
Cited
US3855038A
Cited
US4239574A
Cited
US4390384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |