Patent US3871641A successfully refreshed from Google Patents.
US3871641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding device
Assignee: Kalle GmbH and Co KG
•
Filing: 1973-01-16
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Granted: 1975-03-18
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Expires: 1993-01-16
Abstract
Abstract A device for feeding individual sheets of a stack to apparatus in which these sheets are to be processed further, which comprises a sheet transporting element having a plane underside of non-slippery material which may be brought into contact with the uppermost sheet of the stack, said sheet transporting element being provided with means for moving it backwards and forwards in the direction of transportation of the sheets.
Inventors
- 👤 Gerhard Marx
- 👤 Gunter Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:03
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/26; B65H1/266; B65H1/04; B65H3/00; B65H3/02; B65H2405/00; B65H2405/10; B65H2405/11; B65H2405/113; B65H2405/1136
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
88 words
An apparatus for feeding individual sheets of a stack to a device on which said sheets are further worked comprising a reciprocating conveyor element for the displacement of the top sheet of the stack and a reciprocating telescopic rod comprising a rod and sheath, said conveyor element having a flat bottom of gripping foam which contacts the top sheet of the stack, said telescopic rod being arranged to extend obliquely downwardly and rearwardly with respect to the sheet-conveying direction and having its sheath fastened to the conveyor element.
Claim 2
Independent Claim
88 words
An apparatus for feeding individual sheets of a stack to a device on which said sheets are further worked comprising a reciprocating conveyor element for the displacement of the top sheet of the stack and a reciprocating telescopic rod comprising a rod and sheath, said conveyor element having a flat bottom of gripping foam which contacts the top sheet of the stack, said telescopic rod being arranged to extend obliquely downwardly and rearwardly with respect to the sheet-conveying direction and having its sheath fastened to the conveyor element.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1, wherein the angle between the telescopic rod system and the normal to the paper is between 5* and 20*.
Claim 4
Dependent Claim
13 words
A device as claimed in claim 2, wherein the angle is about 13*.
Claim 5
Dependent Claim
41 words
A device as claimed in claim 1, including a lid positioned above the stack, and provided with a slit in which a slider is displaceably mounted in the slit, one end of the telescopic rod being angularly attached to the sider.
Claim 6
Dependent Claim
41 words
The device as claimed in claim 1, including a box having a front wall transverse to the sheet transporting direction, facing towards the direction to which the sheets are to be transported and sloping outwardly from the bottom of the box.
Claim 7
Dependent Claim
32 words
The device as claimed in claim 5, wherein said box has a rear wall transverse to the sheet transporting direction a portion of which is parallelly sloped to the front transverse wall.
Claim 8
Dependent Claim
29 words
The device as claimed in claim 5, wherein the front transverse wall is provided with at least one strip having a rough surface, running in the sheet transporting direction.
Claim 9
Dependent Claim
32 words
The device as claimed in claim 7, wherein the strip of rough material on the front sloping transverse wall tapers such that it is broader at the bottom than at the top.
Claim 10
Dependent Claim
15 words
The device as claimed in claim 7, wherein the strip comprises a glued-on fabric strip.
Claim 11
Dependent Claim
37 words
The device as claimed in claim 1, including an insulated housing defining an outlet edge for said sheets which is electrically conducting and so disposed that each sheet comes in contact therewith as it leaves the housing.
Claim 12
Dependent Claim
23 words
The device as claimed in claim 10, wherein the electrically conducting outlet edge comprises the upper edge of the sloping front transverse wall.
Claim 13
Dependent Claim
35 words
The device as claimed in claim 4, including a spring interconnecting the slider and housing such that said spring is tensioned when transporting a sheet and then retracts the transporting element to its starting position.
Claim 14
Dependent Claim
55 words
The device as claimed in claim 1, including a microswitch which can be operated by the displacement of the sheet transporting element, said microswitch being connectable to apparatus in which further processing of the sheets is to occur such as to actuate this further processing apparatus when the displacement of the sheet transporting element occurs.
Claim 15
Dependent Claim
21 words
The device as claimed in claim 13, wherein the apparatus in which further processing is to occur comprises an electrophotographic apparatus.
Claim 16
Dependent Claim
57 words
The device as claimed in claim 1, wherein the sheet transporting element comprises a foam block to the top of which is fixed a metal plate, the telescopic rod being fixed at an angle onto this metal plate, and the metal plate being bored and connected to the extending end of the sheath of the telescopic rod.
Claim 17
Dependent Claim
26 words
The device as claimed in claim 15, wherein the outer sheath of the telescopic rod is located in an approximately shaped bore of the foam block.
Claim 18
Dependent Claim
26 words
The device as claimed in claim 1 for transporting sheets comprising four telescopic rods arranged transversely to the sheet transporting direction and equidistant from one another.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |