Patent US3735675A successfully refreshed from Google Patents.
US3735675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making window envelopes
Assignee: Individual
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Filing: 1972-01-06
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Granted: 1973-05-29
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Expires: 1992-01-06
Abstract
Abstract A method is disclosed for producing window envelopes from preformed windowless envelopes. Front and rear wall portions of a preformed envelope are separated, and a window opening is punched in one of the wall portions. A transparent window pane is located in the interior of the preformed envelope between the separated wall portions by a flexible carrier web and is removed from the carrier web within the interior of the envelope by passing the carrier web over a guide plate which abruptly changes the direction of travel of the carrier web. The window pane is removed from the carrier web and affixed to the interior surface of the one wall portion as the envelope is removed from the punching dies. The window panes are adhesively secured to the carrier web in longitudinally spaced apart relation, and the carrier web is fed into and out of the envelopes in a direction substantially parallel to the wall of the envelope to which the window pane is to be affixed.
Inventors
- 👤 F O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:44
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/82; B31B70/826; B31B2150/00; B31B2160/00; B31B2160/10; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1304; Y10T156/1309; Y10T83/00; Y10T83/04; Y10T83/0596
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
57 words
A method of producing a window envelope comprising separating opposed walls of a preformed envelope, forming a window opening only in one of said walls, locating a window pane within the interior of the said preformed envelope between said separated opposed walls, and affixing said pane over the opening formed in said one of said opposed walls.
Claim 2
Independent Claim
57 words
A method of producing a window envelope comprising separating opposed walls of a preformed envelope, forming a window opening only in one of said walls, locating a window pane within the interior of the said preformed envelope between said separated opposed walls, and affixing said pane over the opening formed in said one of said opposed walls.
Claim 3
Dependent Claim
56 words
A method as defined in claim 1, wherein said pane is located in said interior of said preformed envelope between said opposed walls by a flexible carrier web, said pane is removed from said carrier web within the interior of said preformed envelope, and said pane is affixed to the inTerior surface of said one wall.
Claim 4
Dependent Claim
108 words
A method as defined in claim 2, wherein said pane is pre-cut and adhesively secured to said carrier web, said carrier web is an elongated continuous web having other pre-cut window panes adhesively secured thereto in longitudinally spaced apart relation for being affixed to subsequent preformed envelopes, said pane is removed from said carrier web within said interior of said preformed envelope by a guide means abruptly changing the direction of movement of said carrier web within said interior of said preformed envelope, and removal of one window pane from said carrier web positions a subsequent window pane for removal and for being affixed to a subsequent envelope.
Claim 5
Dependent Claim
32 words
A method as defined in claim 3 wherein said carrier web is moved into and out of said interior of said preformed envelope in a direction substantially parallel to said one wall.
Claim 6
Dependent Claim
53 words
A method as defined in claim 4 wherein said window pane is affixed to said interior surface of said one wall while said one wall is moving at a speed relative to a fixed reference point substantially equal to the speed of movement of said carrier web relative to said fixed reference point.
Claim 7
Dependent Claim
76 words
A method as defined in claim 1 wherein said pane is removed from said carrier web within the interior of said preformed envelope and affixed to the interior surface of said one wall while said one wall is being removed from the means for forming said opening, and the speed of movement of said one wall relative to said means is substantially equal to the speed of movement of said carrier web relative to said means.
Claim 8
Independent Claim
38 words
A method of producing a window envelope comprising separating opposed walls of a preformed windowless envelope, and forming a window opening in one of said walls by simultaneously cutting through the periphery of an area defining said opening.
Claim 9
Independent Claim
38 words
A method of producing a window envelope comprising separating opposed walls of a preformed windowless envelope, and forming a window opening in one of said walls by simultaneously cutting through the periphery of an area defining said opening.
References Cited (Backward Citations)
US666523A
Cited
US2389105A
Cited
US3163569A
Cited
US3329052A
Cited
US3259003A
Cited
US3450009A
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |