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US3563537A Expired / Lapsed US ⏱️ 0.0 years remaining

Sheet stack feed device with shiftable throat restrictor

Assignee: Standard Register Co
•
Filing: 1968-10-14
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Granted: 1971-02-16
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Expires: 1988-10-14
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Abstract

Abstract The disclosure embodies a V-shaped sheet stack hopper having a downwardly directed opening at its apex. At the apex of the hopper, and in part forming one of the walls thereof, is a shiftable or positionable restricting member which forms a card restricting outlet with a resilient tire of a card feed roller. Mounted on the hopper and supporting the positionable restricting member is a body on which there is an adjustment member operable to establish a set restriction with the tire, corresponding to a given card thickness. Also mounted on the body is a shifter member by means of which the positionable member may be readily shifted to change the restriction to one for accommodating cards of other thickness.

Inventors

  • 👤 Paul John Thut

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 16:58
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/10

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 108 words
A sheet feed device comprising a hopper having a downwardly directed opening, a sheet feed roller external of said hopper at the downwardly directed opening, a movably mounted sheet restricting member cooperable with the periphery of said roller to form a passage restricting the feeding of sheets singly therethrough, said restricting member being differentially positionable toward and away from the periphery of said roller, and a rotatable cam operatively connected to said sheet restricting member to shift the latter and having a number of lands spaced about the cam periphery at different radial distances from the axis of rotation of said cam corresponding to different thicknesses of sheets.
Claim 2
Dependent Claim 108 words
A sheet feed device comprising a hopper having a downwardly directed opening, a sheet feed roller external of said hopper at the downwardly directed opening, a movably mounted sheet restricting member cooperable with the periphery of said roller to form a passage restricting the feeding of sheets singly therethrough, said restricting member being differentially positionable toward and away from the periphery of said roller, and a rotatable cam operatively connected to said sheet restricting member to shift the latter and having a number of lands spaced about the cam periphery at different radial distances from the axis of rotation of said cam corresponding to different thicknesses of sheets.
Claim 3
Dependent Claim 31 words
A sheet feed device as defined by claim 1 with the addition of yieldable means holding said restricting member in engagement with a selected one of the lands of said cam.

References Cited (Backward Citations)

US1515986A Cited
US2726862A Cited
US2755910A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-02-15 1974-08-17 1975-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-15 1978-08-17 1979-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-15 1982-08-17 1983-02-16 $7700.00 Window Closed / Lapsed

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