Source: http://www.google.com/patents/US5395151?dq=patent:+7360079
Timestamp: 2015-05-27 04:14:49
Document Index: 310303440

Matched Legal Cases: ['art.\n1', 'art 11', 'art 13', 'arts 11', 'art 11', 'art 13', 'art 11', 'art 13', 'art 21', 'art 11', 'art 11', 'art 21', 'art 11', 'art 21', 'art 21', 'art 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 13', 'art 11']

Patent US5395151 - Gripper for a conveying device for conveying single-sheet or multi-sheet ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA gripper includes two gripper parts. The first gripper part is arranged pivotably relative to the other, second gripper part. The two gripper parts interact to securely hold a printed product at the free ends of the gripper parts. The first gripper part is mounted by a ball joint in a bearing part,...http://www.google.com/patents/US5395151?utm_source=gb-gplus-sharePatent US5395151 - Gripper for a conveying device for conveying single-sheet or multi-sheet printed productsAdvanced Patent SearchPublication numberUS5395151 APublication typeGrantApplication numberUS 08/158,616Publication dateMar 7, 1995Filing dateNov 29, 1993Priority dateDec 2, 1992Fee statusPaidAlso published asCA2110423A1, CA2110423C, DE59306510D1, EP0600183A1, EP0600183B1Publication number08158616, 158616, US 5395151 A, US 5395151A, US-A-5395151, US5395151 A, US5395151AInventorsJurg EberleOriginal AssigneeFerag AgExport CitationBiBTeX, EndNote, RefManPatent Citations (21), Referenced by (36), Classifications (10), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetGripper for a conveying device for conveying single-sheet or multi-sheet printed products
US 5395151 AAbstract
A gripper includes two gripper parts. The first gripper part is arranged pivotably relative to the other, second gripper part. The two gripper parts interact to securely hold a printed product at the free ends of the gripper parts. The first gripper part is mounted by a ball joint in a bearing part, which is seated unrotatably on a rotatably mounted hollow shaft. A compression spring is mounted in the first gripper part between the bearing part and the first gripper part, which is spherically mounted in the latter. The compression spring in the closed position of the bearing part exerts a compressive force on the first gripper part. The ball joint is offset rearwards with respect to the pivot axis of the bearing part. As a result, a rearward lengthening of the leg of the first gripper part is attained. This results in more favorable leverages and, with a given compression spring, accordingly results in higher clamping forces at the free end of the first gripper part.
1. A gripper for a conveying device for conveying printed products comprising:a first gripper part having a free end and a second gripper part having a free end, the first gripper part being pivotable relative to the second gripper part, the first gripper part having a clamping position for securely clamping a printed product, and the first gripper part in the clamping position interacting under spring action on its free end with the free end of the second gripper part; a bearing part being pivotable about a first pivot axis from an open position to a closed position, the first gripper part being mounted pivotably about a second pivot axis, which runs essentially parallel to the first pivot axis, a pivot bearing for the first gripper part, the pivot bearing being offset with respect to the first pivot axis; a locking mechanism, releasable by a fixed-in-place opening arrangement, holding the bearing part in its closed position, and a transfer element connected to transfer the pivoting movement of the bearing part to the first gripper part and generate a spring-elastic clamping force, acting via the first gripper part on the free end thereof, when the bearing part is in the closed position. 2. The gripper according to claim 1 wherein the pivot bearing for the first gripper part is disposed at a distance from the pivot axis of the bearing part in a direction away from the free end of said first gripper part.
The present invention relates to a gripper for a conveying device for conveying single-sheet or multi-sheet printed products, such as newspapers, periodicals and parts thereof as well as supplements therefor. More particularly, the present invention is directed to a gripper for a conveying device which provides greater clamping forces in comparison with known grippers with a compact design.
To achieve these and other objects a gripper is provided for a conveying device for conveying printed products. The gripper includes a first gripper part and a second gripper part, each of which has a free end. The first gripper part is pivotal relative to the second gripper part such that it has a clamping position to securely clamp a printed product. When the first gripper part is in the clamping position, the free end of the first gripper part interacts, under spring action, with the free end of the second gripper part. A bearing part which pivots about a first pivot axis from an open position to a closed position is provided. The first gripper part is mounted pivotably about a second pivot axis, which runs essentially parallel to the first pivot axis. The gripper includes a pivot bearing for the first gripper part which is off-set with respect to the first pivot axis. A locking mechanism which is releasable by an opening arrangement holds the bearing part in its closed position. A transfer element is connected such that it transfers the pivoting movement of the bearing part to the first gripper part and generates a spring-elastic clamping force. The spring-elastic clamping force acts via the free end of the first gripper part when the bearing part is in the closed position.
Exemplary embodiments of the subject-matter of the invention are explained in more detail below with reference to the drawings:
Referring to the figures, the grippers 10 have a first gripper part 11, the leg of which is denoted by 12, and a second gripper part 13, the leg of which is denoted by 14. In the opened state of the grippers 10, the two gripper parts 11 and 13 define a gripper opening 15. The first gripper part 11 is pivotable, as described in more detail below, with respect to the second gripper part 13 and is shown in FIGS. 1 and 2 in its closed position. The free end 12a of the first gripper part 11 interacts with the free end 14a of the second gripper part 13 for securely clamping a printed product (not shown in FIGS. 1 and 2).
The closing operation described above is now explained in even further detail with reference to FIG. 5, in which the individual parts of a gripper 10 are represented only diagrammatically. During the pivoting of the bearing part 21 and consequently also of the first gripper part 11 into the intermediate position shown in FIG. 3, the end 12a of the first gripper part 11 moves along a circular arc K1 as far as the position denoted in FIG. 5 by 1. The center of the circular arc K1 lies on the longitudinal axis 17' of the hollow shaft 17 (which is, of course, also the pivot axis of the bearing part 21). The radius of the circular arc K1 is denoted by R1. The first gripper part 11, located in this intermediate position, is indicated by dot-dashed lines, the ball joint 22 assuming the position denoted by 1. Upon further turning of the bearing part 21, which as already explained results in a compressing of the compression spring 27, a relative movement occurs between the bearing part 21 and the first gripper part 11. The ball joint 22' is moved into the position denoted in FIG. 5 by 2, while the free end 12a, resting on the printed product P, of the first gripper part 11 is first displaced by the distance b rearwards into the position likewise denoted by 2. By this displacement of the free end 12a of the first gripper part 11, a drawing effect is exerted on the printed product P. This drawing effect tends to push the printed product even further into the gripper 10. Subsequently, upon further pivoting of the first gripper part 11, the free end 12a of the first gripper part is moved along a circular arc K2, the center of which lies on the pivot axis 25, determined by the ball joint 22', and the radius of which is denoted by R2.
As discussed, the end 12a of the first gripper part 11 moves along the circular arc K1 until this end 12a meets a printed product. In the case of thin printed products, this means that the gripper part end 12a runs along this circular arc K1 until almost up to the point denoted by 2, i.e. almost up to the end 14a of the other gripper part 13. The above-mentioned rearward movement of the end 12a of the gripper part 11 is accordingly extremely small, or virtually non-existent, in the case of thin products.
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Ltd.Paper clamping apparatus for office machineUS8777221Jun 2, 2010Jul 15, 2014Ferag AbDevice and method for processing printing productsUS20130214474 *Aug 21, 2012Aug 22, 2013In Su HwangPaper clamping apparatus for office machineEP0709218A1Sep 18, 1995May 1, 1996Ferag AGProcess and device for marking printed products* Cited by examinerClassifications U.S. Classification294/104, 271/204, 198/803.9, 294/99.1, 271/277International ClassificationB41F21/04, B41F21/08, B65H29/04Cooperative ClassificationB65H29/003European ClassificationB65H29/00DLegal EventsDateCodeEventDescriptionAug 31, 2006FPAYFee paymentYear of fee payment: 12Aug 26, 2002FPAYFee paymentYear of fee payment: 8Aug 31, 1998FPAYFee paymentYear of fee payment: 4Nov 29, 1993ASAssignmentOwner name: FERAG AG, SWITZERLANDFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EBERLE, JURG;REEL/FRAME:006791/0263Effective date: 19931117RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of 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