US5794412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of folding a portion of dielectric sheet material
Assignee: CO ME SCA Costruzioni Meccaniche Scarperia Srl
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Filing: 1997-03-13
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Granted: 1998-08-18
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Expires: 2017-03-13
Abstract
Abstract A method of folding a portion of dielectric sheet material, the method including the steps of mating with a support a sheet including the portion for folding; folding the portion onto an outer surface of the support; and generating an electrostatic force of attraction between the portion and the outer surface of the support.
Inventors
- 👤 Giuseppe Ronconi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:11
CPC Classifications
B; B65; B65B; B65B11/00; B65B11/06; B65B11/08; B65B11/10; B65B61/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A method of folding portions of dielectric sheet material, the method comprising mating a sheet (5) including said portions with a product for folding the sheet about the product in a substantially U-shape configuration, wherein said portions form two outer longitudinal faced flaps; folding a first of said portions onto an outer surface of said product (4); generating an electrostatic force of attraction between said first portion and said outer surface by forming a first given distribution of electric charges on an inner surface of said first portion, and a second distribution of charges of opposite sign on said outer surface; abandoning said folded first portion; and folding a second of said portions onto said outer surface of the product and onto said folded first portion.
Claim 2
Independent Claim
126 words
A method of folding portions of dielectric sheet material, the method comprising mating a sheet (5) including said portions with a product for folding the sheet about the product in a substantially U-shape configuration, wherein said portions form two outer longitudinal faced flaps; folding a first of said portions onto an outer surface of said product (4); generating an electrostatic force of attraction between said first portion and said outer surface by forming a first given distribution of electric charges on an inner surface of said first portion, and a second distribution of charges of opposite sign on said outer surface; abandoning said folded first portion; and folding a second of said portions onto said outer surface of the product and onto said folded first portion.
Claim 3
Dependent Claim
17 words
The method according to claim 1, wherein said product is made, at least externally, of dielectric material.
Claim 4
Dependent Claim
55 words
The method according to claim 1, wherein said first distribution of charges is formed by polarizing said first portion by means of an electric field prior to said step of folding the first portion; said second distribution of charges being formed by induction by said first distribution of charges as said first portion is folded.
Claim 5
Dependent Claim
23 words
The method according to claim 1, wherein both said distributions of charges are formed simultaneously by polarization by means of an electric field.
Claim 6
Dependent Claim
59 words
The method according to claim 3, wherein said electric field is formed by means of a number of plates made of electrically conducting material and located on either side of a path of the products; said plates forming the plates of a capacitor; and said folding step being performed by means of a folding element downstream from said capacitor.
Claim 7
Dependent Claim
59 words
The method according to claim 4, wherein said electric field is formed by means of a number of plates of electrically conducting material; said plates forming the plates of a capacitor; and said folding step being performed within said electric field by means of a folding element forming one of the plates of the capacitor generating said electric field.
Claim 8
Dependent Claim
23 words
The method according to claim 4, wherein said electric field is formed by a folding element; said folding element performing said folding step.
Claim 9
Dependent Claim
35 words
The method according to claim 7, wherein said folding element comprises a number of substantially coplanar plates electrically insulated with respect to one another, and forming the plates of a capacitor generating said electric field.
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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) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |