Patent US3624349A successfully refreshed from Google Patents.
US3624349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable welding device
Assignee: Robert Bosch Hausgeraete GmbH
•
Filing: 1969-12-11
•
Granted: 1971-11-30
•
Expires: 1989-12-11
Abstract
Abstract A substantially hollow supporting base made from a plastic material comprises an upper elongated supporting surface for the support of a plurality of plastic layers to be welded and a depressible pressure member cooperating with and movable relative to the supporting surface between a rest position and a welding position. An electric heating wire is connected to and extends along the elongation of the supporting surface for welding, in association with the pressure member, the plurality of plastic layers. All the other electrical components necessary for alternatingly heating the heating wire, are accommodated in the hollow interior of the supporting base.
Inventors
- 👤 Rolf Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:22
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/224; B29C65/229; B29C66/00; B29C66/004; B29C66/0042; B29C66/0044; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/8145; B29C66/81457; B29C66/818; B29C66/8182; B29C66/81821; B29C66/82; B29C66/822; B29C66/8221; B29C66/8227; B29C66/83; B29C66/832; B29C66/8324; B29C66/84; B29C66/861; B29C65/222; B29C66/735; B29C66/7352; B29C66/812; B29C66/8122; B29C66/8126; B29C66/81265; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
A portable welding device for fusing a plurality of fusible layers, particularly layers of plastic material, comprising, in combination, support means comprising an upright base and an elongated arm portion projecting laterally from said base and having a free outer end; an upright support member on said outeR free end of said arm portion for supporting said outer end; an elongated upper support face provided on said base and said elongated arm portion for supporting a plurality of fusible layers thereon; pressure means mounted on said base movable relative to said upper support face between a rest position and a welding position for engaging in said welding position a plurality of fusible layers on said support face and for pressing the same against said support face; and welding means associated with said upper support face for heating said fusible layers pressed by said pressure means onto said support face so as to weld said fusible layers to each other.
Claim 2
Dependent Claim
159 words
A portable welding device for fusing a plurality of fusible layers, particularly layers of plastic material, comprising, in combination, support means comprising an upright base and an elongated arm portion projecting laterally from said base and having a free outer end; an upright support member on said outeR free end of said arm portion for supporting said outer end; an elongated upper support face provided on said base and said elongated arm portion for supporting a plurality of fusible layers thereon; pressure means mounted on said base movable relative to said upper support face between a rest position and a welding position for engaging in said welding position a plurality of fusible layers on said support face and for pressing the same against said support face; and welding means associated with said upper support face for heating said fusible layers pressed by said pressure means onto said support face so as to weld said fusible layers to each other.
Claim 3
Dependent Claim
25 words
A device as defined in claim 1, wherein said base, said elongated arm portion and said upright support member are integrally connected to each other.
Claim 4
Dependent Claim
76 words
A device as defined in claim 1, wherein said base and said arm portion constitute a housing, and wherein said welding means are electric welding means comprising an electric heating wire supported on said elongated support face for heating engagement with said plurality of fusible layers, and electric circuit means accommodated in said base and including switch means for periodically electrically actuating said heating wire for heating the same and thereby said plurality of fusible layers.
Claim 5
Dependent Claim
71 words
A device as defined in claim 3, wherein said support face is electrically nonconductive and has axially opposite ends and comprises a groove longitudinally extending between said opposite ends and support means in said groove for supporting said electric heating wire, said support means comprising a longitudinally extending electrically conductive support beam having leg portions abutting the bottom of said groove and having an upper portion supporting said electric heating wire.
Claim 6
Dependent Claim
63 words
A device as defined in claim 4, wherein said longitudinally extending groove in said support face has a substantially rectangular cross-sectional configuration, and wherein said longitudinally extending support beam has a substantially inverted U-shaped cross-sectional configuration, said upper portion of said support beam supporting said electric heating wire constituting the base portion of said beam and extending substantially level with said support surface.
Claim 7
Dependent Claim
60 words
A device as defined in claim 5, wherein said electric heating wire is provided with thermoplastic insulating means comprising a first layer sandwiched between said electric heating wire and said base portion of said support beam and being heat-resistant and having a low coefficient of friction, and a second layer superimposed on said electric heating wire and being heat-and-fluid resistant.
Claim 8
Dependent Claim
65 words
A device as defined in claim 6, wherein said electric heating wire has opposite ends with one of said axially opposite ends adjustable mounted at one of said axially opposite ends of said support face, and with the other of said ends electrically connected to said electric switch means located in said base at the other of said axially opposite ends of said support surface.
Claim 9
Dependent Claim
98 words
A device as defined in claim 7, wherein said one end of said support face adjustably mounting said one end of said electric heating wire, is provided with manually operable adjustment means for varying the tensile stress of said electric heating wire, said adjustment means comprising retaining means retaining said one end of said electric heating wire and an adjustable screw member abutting against said one end of said support surface and operative for displacing said retaining means relative to said one end of said support face in direction normal to the elongation of said electric heating wire.
Claim 10
Dependent Claim
29 words
A device as defined in claim 1, wherein said pressure means is pivotably mounted on said base about an axis substantially parallel with the elongation of said support face.
Claim 11
Dependent Claim
69 words
A device as defined in claim 3, wherein said pressure means is pivotally mounted on said base and having a lower pressure face of a size and configuration substantially idEntical to that of said support face, and including a transparent member in said pressure means, pilot light means on said base beneath said transparent member and in circuit with said switch means to indicate actuation of said heating wire.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |