US3883386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously joining or paper printing flat materials
Assignee: SAER DI TREZZI EDUIGE
•
Filing: 1972-03-20
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Granted: 1975-05-13
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Expires: 1992-03-20
Abstract
Abstract An apparatus for continuously joining or paper printing flat materials, comprising two continuous belts between which the parts to be joined or printed are seized and compressed, at least one of said belts being a metal belt heated by means of induced electric current.
Inventors
- 👤 Eraldo Garbini
- 👤 Umberto Lissoni
- 👤 Bruno Cislaghi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A41; A41H; A41H43/00; A41H43/04; B32B37/00; B32B37/06; B32B7/00; B32B7/04; B32B7/12; B41; B41F; B41F16/00; B32B2310/00; B32B2310/08; B32B2310/0806; B32B2310/0812
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
AN APPARATUS FOR CONTINUOUSLY JOINING LAYERS OF FABRIC WITH INTERPOSED THERMO-ADHESIVE, COMPRISING TWO CONTINUOUS BELTS BETWEEN WHICH THE PARTS TO BE JOINED ARE SEIZED AND COMPRESSED, AT LEAST ONE OF SAID BELTS A METAL BELT ENNTIRELY HEATED BY MEANS OF INDUCED ELECTRIC CURRENT, WHEREIN THE LOWER ONE OF SAID TWO CONTINUOUS BELTS IS A CONVEYOR BELT AND THE UPPER ONE OF SAID TWO CONTINOUS BELTS IS A FIXED BELT OF METAL HAVING A LOW ELECTRICAL RESISTANCE, SAID UPPER BELT BEING DISPOSED IN SUCH A MANNER AS TO CONSTITUTE THE SECONDARY WINDING OF A TRANSFORMER FED WITH LOW FREQUENCY CURRENT.
Claim 2
Independent Claim
99 words
AN APPARATUS FOR CONTINUOUSLY JOINING LAYERS OF FABRIC WITH INTERPOSED THERMO-ADHESIVE, COMPRISING TWO CONTINUOUS BELTS BETWEEN WHICH THE PARTS TO BE JOINED ARE SEIZED AND COMPRESSED, AT LEAST ONE OF SAID BELTS A METAL BELT ENNTIRELY HEATED BY MEANS OF INDUCED ELECTRIC CURRENT, WHEREIN THE LOWER ONE OF SAID TWO CONTINUOUS BELTS IS A CONVEYOR BELT AND THE UPPER ONE OF SAID TWO CONTINOUS BELTS IS A FIXED BELT OF METAL HAVING A LOW ELECTRICAL RESISTANCE, SAID UPPER BELT BEING DISPOSED IN SUCH A MANNER AS TO CONSTITUTE THE SECONDARY WINDING OF A TRANSFORMER FED WITH LOW FREQUENCY CURRENT.
Claim 3
Dependent Claim
28 words
An apparatus as claimed in claim 1, in which a conveyor belt of antiadhesive heat resistant material rotates about the fixed metal belt, and in contact with it.
Claim 4
Dependent Claim
29 words
An apparatus as claimed in claim 1, in which two sets of guide and pressure rollers are opposingly disposed internal to the continuous belts and in contact with them.
Claim 5
Dependent Claim
34 words
An apparatus as claimed in claim 1, in which a pressing device adapted to transmit the necessary compression to the articles to be heat joined is inserted in the end of the conveyor belts.
Claim 6
Dependent Claim
33 words
An apparatus as claimed in claim 1, in which a device for compressing the articles to be heat joined is provided at the end of the heat joining device, and distinct from it.
Claim 7
Dependent Claim
50 words
An apparatus as claimed in claim 5, in which the end of one of the two conveyor belts is deviated by means of idle rollers in such a manner as to form a loop housing a doctor for smoothing the heat joined fabric before it passes into the compression device.
Claim 8
Dependent Claim
31 words
An apparatus as claimed in claim 1, in which the fixed belt of metal having low electrical resistance comprises a material selected from the group consisting of: copper or phosphor bronze.
Claim 9
Dependent Claim
22 words
An apparatus as claimed in claim 1, additionally comprising means for continuously feeding layers of fabric with interposed thermo-adhesives to said belts.
Claim 10
Dependent Claim
26 words
An apparatus as claimed in claim 1, additionally comprising means for cooling layers of fabric with interposed thermo-adhesives, said cooling means located downstream from said belts.
References Cited (Backward Citations)
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US2711781A
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US2839651A
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US3223027A
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US3187152A
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US3547742A
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US3619325A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |