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US4219191A Expired / Lapsed US ⏱️ 0.0 years remaining

Document feeding apparatus

Assignee: Pitney Bowes Inc
•
Filing: 1979-01-08
•
Granted: 1980-08-26
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Expires: 1999-01-08
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Abstract

Abstract A document feeding apparatus has a deck that is placed at an angle such that the incline of the deck is sufficiently large so as to overcome the friction of documents placed thereupon. The deck has an opening at the bottom thereof through which a vacuum type conveyor extends to engage the bottommost document of the stack of documents to transport the bottommost document generally upwardly. With this feeding of the bottommost document the balance of the documents will remain in position due to the effect of gravity whereas the next-to-bottom sheet will be released from the bottommost sheet since the angle of incline is sufficiently great to overcome the frictional forces acting between these two documents.

Inventors

  • 👤 Andrew W. Rastorguyeff

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 14:56
CPC Classifications
B; B65; B65H; B65H83/00; B65H83/02; B65H1/00; B65H1/04; B65H1/06; B65H3/00; B65H3/08; B65H3/12; B65H3/124; B65H3/126; B65H3/46

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 243 words
In an apparatus for feeding a document along a path from an upstream end to a down stream end, the combination comprising: a. a longitudinally extended deck upon which a stack of documents may be placed, said deck having an opening therein; b. means for supporting said deck at an angle relative to the horizontal, the angle being such that documents placed in a stack upon said deck would tend to slide off one another due to gravity; c. document supply means located at the upstream end of said deck for feeding documents thereto; d. means for adjusting the location of said support member on said deck; e. means for adjusting the location where said supply means feeds documents to said deck; f. a support member attached to and extending laterally upon said deck, said support member being in a position to prevent documents from sliding from said deck; g. take-away means located at the downstream end of said deck; and h. a vacuum member received within said opening and positioned to engage the bottommost document of a stack of documents supported by said deck, said vacuum member being operative to convey the bottom-most document in a generally upward direction away from said support member and into engagement with said take-away whereby the friction between the bottom document and the next-to-bottom document is overcome so as to allow the bottom document to be conveyed and the balance of the documents remain in place.
Claim 2
Dependent Claim 243 words
In an apparatus for feeding a document along a path from an upstream end to a down stream end, the combination comprising: a. a longitudinally extended deck upon which a stack of documents may be placed, said deck having an opening therein; b. means for supporting said deck at an angle relative to the horizontal, the angle being such that documents placed in a stack upon said deck would tend to slide off one another due to gravity; c. document supply means located at the upstream end of said deck for feeding documents thereto; d. means for adjusting the location of said support member on said deck; e. means for adjusting the location where said supply means feeds documents to said deck; f. a support member attached to and extending laterally upon said deck, said support member being in a position to prevent documents from sliding from said deck; g. take-away means located at the downstream end of said deck; and h. a vacuum member received within said opening and positioned to engage the bottommost document of a stack of documents supported by said deck, said vacuum member being operative to convey the bottom-most document in a generally upward direction away from said support member and into engagement with said take-away whereby the friction between the bottom document and the next-to-bottom document is overcome so as to allow the bottom document to be conveyed and the balance of the documents remain in place.
Claim 3
Dependent Claim 25 words
The conveying apparatus of claim 1 including a laterally extending wall spaced relative to said support member intermediate said support member and said take-away means.
Claim 4
Dependent Claim 20 words
The conveying apparatus of claim 2 including means for moving said wall in a direction generally normal to said deck.
Claim 5
Dependent Claim 52 words
The conveying apparatus of claim 1 wherein said vacuum conveying member comprises a chamber having at least one opening therein that is confluent with said deck opening, a foraminous belt disposed about said chamber, means for moving said belt relative to said chamber and means for creating a vacuum in said chamber.

References Cited (Backward Citations)

DE565736C Cited
US3212772A Cited
FR1531481A Cited
US3776544A Cited
US4081181A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-08-26 1984-02-25 1984-08-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-08-26 1988-02-25 1988-08-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-08-26 1992-02-25 1992-08-26 $7700.00 Window Closed / Lapsed

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