Patent US3796426A successfully refreshed from Google Patents.
US3796426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document feeder
Assignee: Halm Instrument Co Inc
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Filing: 1972-12-08
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Granted: 1974-03-12
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Expires: 1992-12-08
Abstract
Abstract Apparatus for feeding documents having an adhesive area thereon. An oscillatably mounted vacuum sucker has a curved surface and a slot. A rack holds a stack of documents in operative contact with the sucker. The sucker is oscillated to separate the closest document from said stack. Take-away roller means are connected to remove said document from said sucker. A mask is mounted on the bottom of said rack to cover said slot in one position of said slot whereby said adhesive areas do not come in contact with said slots in said sucker as the document is pulled across the sucker.
Inventors
- 👤 F Schilpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:39
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/10; B07; B07C; B07C1/00; B07C1/02; B07C1/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
Means for feeding documents having an adhesive area on its trailing edge comprising,, an oscillatably mounted vacuum sucker having a curved surface and a slot, a rack for holding a stack of documents in operative contact with said sucker, means to oscillate said sucker to separate the closest document from said staCk, take-away means connected to remove said document from said sucker, and means to prevent physical contact of said adhesive area with the edges of said sucker slot as said adhesive area is pulled across said slot comprising a mask mounted on the bottom of said rack to cover said slot in one position of said slot whereby said adhesive areas do not come in contact with said slots in said sucker as said document is pulled across said sucker.
Claim 2
Dependent Claim
131 words
Means for feeding documents having an adhesive area on its trailing edge comprising,, an oscillatably mounted vacuum sucker having a curved surface and a slot, a rack for holding a stack of documents in operative contact with said sucker, means to oscillate said sucker to separate the closest document from said staCk, take-away means connected to remove said document from said sucker, and means to prevent physical contact of said adhesive area with the edges of said sucker slot as said adhesive area is pulled across said slot comprising a mask mounted on the bottom of said rack to cover said slot in one position of said slot whereby said adhesive areas do not come in contact with said slots in said sucker as said document is pulled across said sucker.
Claim 3
Dependent Claim
25 words
Apparatus as in claim 1 wherein said mask is a curved flexible member mounted on the bottom of said rack and extending over said sucker.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |