Patent US4377430A successfully refreshed from Google Patents.
US4377430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making book covers
Assignee: BEXLEY JERRY
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Filing: 1981-04-06
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Granted: 1983-03-22
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Expires: 2001-04-06
Abstract
Abstract A book cover making process feeds transparent polymer sheet material from a roll of material across a plurality of roller cutting blades for making cuts a portion of the way through the material. The polymer sheet material being fed is coated with adhesive in two space coats on either side of the cut lines on the opposite side of the sheet from the cut lines. The coated adhesive is covered with backing material and the polymer sheet material is then cut into predetermined sizes to form book covers. The coating and backing may be done in one operation and rewound onto a roll and fed from the rewound roll for cutting to size and then have a plurality of lines cut into the individual polymer sheets.
Inventors
- 👤 Robert G. Bexley
- 👤 Barry South Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:03
CPC Classifications
B; B42; B42C; B42C7/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
A process of making a backing cover including the steps of: feeding polymer sheet material from a roll of polymer sheet material; coating adhesive onto one side of polymer sheet being fed from a roll of polymer material into spaced coats; applying sheet backing material to each of said adhesive coats from a pair of rolled sheet backing material; rewinding said polymer material having said covered adhesive thereon backwards onto a roll; feeding said rewound polymer material from said roll; cutting and discharging sheets from said polymer sheet and covered adhesive thereon; and cutting a plurality of lines a portion of the way through polymer sheet, including cutting lines from five to seven mils into said polymer sheet material.
Claim 2
Dependent Claim
119 words
A process of making a backing cover including the steps of: feeding polymer sheet material from a roll of polymer sheet material; coating adhesive onto one side of polymer sheet being fed from a roll of polymer material into spaced coats; applying sheet backing material to each of said adhesive coats from a pair of rolled sheet backing material; rewinding said polymer material having said covered adhesive thereon backwards onto a roll; feeding said rewound polymer material from said roll; cutting and discharging sheets from said polymer sheet and covered adhesive thereon; and cutting a plurality of lines a portion of the way through polymer sheet, including cutting lines from five to seven mils into said polymer sheet material.
Claim 3
Dependent Claim
33 words
A process in accordance with claim 1, in which the step of feeding polymer sheet material from a roll includes feeding a transparent polymer sheet from a roll of transparent polymer sheet material.
Claim 4
Dependent Claim
40 words
A process in accordance with claim 2, in which the step of cutting a plurality of lines a portion of the way through said polymer sheet includes cutting eight lines a portion of the way through said polymer sheet material.
Claim 5
Dependent Claim
45 words
A process in accordance with claim 3, in which the cutting of a plurality of lines a portion of the way through said polymer sheets includes feeding each sheet through a plurality of roller cutting dyes, said sheet having a thickness of approximately fifteen mils.
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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |