US3924848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper feed apparatus for gripper-type paper transport device
Assignee: Fujifilm Business Innovation Corp
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Filing: 1974-01-28
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Granted: 1975-12-09
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Expires: 1994-01-28
Abstract
Abstract A paper feed device for a gripper-type paper transport device where sheets of paper are individually fed from a stack. Each sheet is detected by a first detector to stop the sheet in an unbuckled condition at a standby position. When the gripper of the transport device reaches the standby position it is opened and in response to its opened condition, a second detector is actuated to restart the feeding of the paper sheet into the open gripper where the paper is fed at a speed faster than that of the gripper. After the paper is fed into the gripper, means are provided for closing the gripper so that the paper can be transported thereby.
Inventors
- 👤 Shin-Ichi Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6555; G03G15/6558; B; B65; B65H; B65H5/00; B65H5/08; B65H5/085; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00405; G03G2215/00409
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A paper feed device for feeding sheets of paper from at least one receptacle therefor, said device comprising: paper feeding means for feeding sheets of paper from said receptacle at a first rate of speed; first detecting means responsive to the presence of each of said sheets of paper for rendering said paper feeding means inoperative and stopping each said sheet of paper in a substantially flat condition at a predetermined paper standby position; chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to said paper standby position, and the linear speed of said gripper being less than that speed at which said paper sheets are Fed; means for opening said gripper when it is adjacent said paper standby position; second detecting means for restarting said paper feed means in response to an opened condition of the gripper when the gripper is adjacent the paper standby position to feed each paper sheet from its standby position into the open gripper; and means for closing said gripper after each paper sheet has been fed into the open gripper so that the paper sheets may be removed from said standby position and transferred by said chain delivery means.
Claim 2
Dependent Claim
208 words
A paper feed device for feeding sheets of paper from at least one receptacle therefor, said device comprising: paper feeding means for feeding sheets of paper from said receptacle at a first rate of speed; first detecting means responsive to the presence of each of said sheets of paper for rendering said paper feeding means inoperative and stopping each said sheet of paper in a substantially flat condition at a predetermined paper standby position; chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to said paper standby position, and the linear speed of said gripper being less than that speed at which said paper sheets are Fed; means for opening said gripper when it is adjacent said paper standby position; second detecting means for restarting said paper feed means in response to an opened condition of the gripper when the gripper is adjacent the paper standby position to feed each paper sheet from its standby position into the open gripper; and means for closing said gripper after each paper sheet has been fed into the open gripper so that the paper sheets may be removed from said standby position and transferred by said chain delivery means.
Claim 3
Dependent Claim
65 words
A paper feed device as in claim 1 where said first detecting means includes first switching means having a contact disposed in the travel path of said paper sheets, said paper sheets depressing said contact to operate said first switching means, said paper feeding means being responsive to the operation of said first switching means for stopping said paper sheet at said paper standby position.
Claim 4
Dependent Claim
31 words
A paper feed device as in claim 2 including means for maintaining said sheets of paper along their path of travel as they depress the contact of said first switching means.
Claim 5
Dependent Claim
37 words
A paper feed device as in claim 2 including a drive means for said paper feed means, said first switching means disconnecting said drive means from said paper feed means when said first switching means is operated.
Claim 6
Dependent Claim
66 words
A paper feed device as in claim 2 where said second detecting means includes second switching means having a contact disposed in the travel path of said gripper, said gripper, upon being opened, pushing said last-mentioned contact to operate said second switching means, said paper feeding means being responsive to the operation of said second switching means to feed each paper sheet into said open gripper.
Claim 7
Dependent Claim
240 words
A paper feed device comprising: at least one paper tray for receiving therein sheets of paper; paper feed means including feed rollers for supplying sheets of paper one by one from said one tray; means for detecting the arrival of a leading edge of said sheets of paper and for stopping each said sheet of paper in a substantially flat condition when the leading end of each said sheet of paper reaches a predetermined paper standby position; chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to the travel path of the sheet of paper at a predetermined distance from said paper standby position; means for opening the gripper when it assumes a position on the said locus adjacent the travel path of the paper; means for restarting said paper feed means in response to the opened condition of said gripper when said gripper assumes said position on the said locus adjacent the travel path of the paper to feed each sheet of paper from its standby position into the open gripper; the paper feeding spped of said paper feed means being higher than the travel speed of said chain delivery means; and means for closing said gripper after each paper sheet has been fed into the open gripper so that the paper sheets may be removed from said standby position and transferred by said chain delivery means.
Claim 8
Dependent Claim
240 words
A paper feed device comprising: at least one paper tray for receiving therein sheets of paper; paper feed means including feed rollers for supplying sheets of paper one by one from said one tray; means for detecting the arrival of a leading edge of said sheets of paper and for stopping each said sheet of paper in a substantially flat condition when the leading end of each said sheet of paper reaches a predetermined paper standby position; chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to the travel path of the sheet of paper at a predetermined distance from said paper standby position; means for opening the gripper when it assumes a position on the said locus adjacent the travel path of the paper; means for restarting said paper feed means in response to the opened condition of said gripper when said gripper assumes said position on the said locus adjacent the travel path of the paper to feed each sheet of paper from its standby position into the open gripper; the paper feeding spped of said paper feed means being higher than the travel speed of said chain delivery means; and means for closing said gripper after each paper sheet has been fed into the open gripper so that the paper sheets may be removed from said standby position and transferred by said chain delivery means.
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) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |