Patent US4051285A successfully refreshed from Google Patents.
US4051285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tearable edge strip for plastic sheet
Assignee: Xerox Corp
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Filing: 1973-06-06
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Granted: 1977-09-27
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Expires: 1993-06-06
Abstract
Abstract A sheet of support material in which a non-fibrous image receiving portion has a fibrous portion secured thereto. The fibrous portion cooperates with a sheet feeding apparatus to facilitate the seriatim feeding of successive sheets of support material from a stack thereof.
Inventors
- 👤 William E. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:53
CPC Classifications
G; G03; G03G; G03G7/00; G03G13/00; G03G13/01; G03G7/006; G03G7/0073; G03G7/008; G03G7/0086; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082; Y10T428/00; Y10T428/15; Y10T428/19; Y10T428/24; Y10T428/24777; Y10T428/24793
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
139 words
A sheet of support material employed in a sheet feeding apparatus of the type having a rotary driven feed roll cooperating with a retard roll for seriatim feeding of sucessive sheets of support material from a stack thereof, including: a transparent non-fibrous flexible polymeric portion; and a fibrous flexible paper portion extending in an outwardly direction from said non-fibrous portion having the trailing marginal region thereof overlapping and secured adhesively to the leading marginal region of said non-fibrous portion with said fibrous being interposed between the feed roll and retard roll during the forward advancement of the sheet of support material to facilitate separation of successive sheets of support material from the stack thereof, said fibrous portion being serrated in the region thereof adjacent to said non-fibrous portion to permit the portions to be readily separated from one another.
Claim 2
Dependent Claim
139 words
A sheet of support material employed in a sheet feeding apparatus of the type having a rotary driven feed roll cooperating with a retard roll for seriatim feeding of sucessive sheets of support material from a stack thereof, including: a transparent non-fibrous flexible polymeric portion; and a fibrous flexible paper portion extending in an outwardly direction from said non-fibrous portion having the trailing marginal region thereof overlapping and secured adhesively to the leading marginal region of said non-fibrous portion with said fibrous being interposed between the feed roll and retard roll during the forward advancement of the sheet of support material to facilitate separation of successive sheets of support material from the stack thereof, said fibrous portion being serrated in the region thereof adjacent to said non-fibrous portion to permit the portions to be readily separated from one another.
Claim 3
Dependent Claim
36 words
A sheet of support material as recited in claim 1, wherein said fibrous portion is of a width substantially equal to the width of said non-fibrous portion and overlaps said non-fibrous portion about 3/16 an inch.
Claim 4
Dependent Claim
25 words
A sheet of support material as recited in claim 2, wherein said fibrous portion ranges in length from about 1 inch to about 3 inches.
Claim 5
Dependent Claim
33 words
A sheet of support material as recited in claim 1, wherein said non-fibrous portion is a substantially transparent synthetic thermoplastic film selected from a group of resins consistng of polysulfones, polyethylenes, and polycarbonates.
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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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |