EP0503268A1 - Document shredding machine - Google Patents

Document shredding machine Download PDF

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Publication number
EP0503268A1
EP0503268A1 EP92101877A EP92101877A EP0503268A1 EP 0503268 A1 EP0503268 A1 EP 0503268A1 EP 92101877 A EP92101877 A EP 92101877A EP 92101877 A EP92101877 A EP 92101877A EP 0503268 A1 EP0503268 A1 EP 0503268A1
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EP
European Patent Office
Prior art keywords
button
paper
cylinder
piston
document shredder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92101877A
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German (de)
French (fr)
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EP0503268B1 (en
Inventor
Willi Strohmeyer
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HSM PRESSEN & Co KG GmbH
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Geha Werke GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0023—Switching devices

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Crushing And Grinding (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Paper (AREA)

Abstract

A piston-and-cylinder retarder delays the switch opening of a switch actuated by a sensor in the path of paper introduced through the paper-feed shaft or chute of a paper shredder, thereby eliminating the need for more expensive and complex electronic time-delay systems to ensure that the shredding unit remains switched on until the trailing edge of the paper passes it.

Description

Die Erfindung bezieht sich auf einen Schriftgutvernichter mit einem im Papier-Einlaufschacht angeordneten, vom zugeführten Papier betätigbaren Taster, der an einen Schalter zum Ein- und Ausschalten des Schneidwerkes geführt ist und mit einer Nachlaufeinrichtung für das Schneidwerk nach dem Einzug des Papiers.The invention relates to a document shredder with a button arranged in the paper inlet shaft that can be actuated by the supplied paper, which is guided to a switch for switching the cutting mechanism on and off and with a trailing device for the cutting mechanism after the paper has been drawn in.

Bei Schriftgutvernichtern der genannten Gattung entstehen in der Regel dadurch Probleme, daß das zugeführte Papier den Taster nach dem Passieren freigibt, so daß dann das Schneidwerk über den zugeordneten Schalter sofort ausgeschaltet wird. Sofern das Papier in seinem oberen, nicht zerkleinerten Bereich Informationen enthält, so bleiben diese voll lesbar. Folglich ist bei derartigen Geräten die Datensicherheit erheblich beeinträchtigt.Problems with document shredders of the type mentioned generally arise from the fact that the supplied paper releases the button after it has passed, so that the cutting mechanism is then immediately switched off via the assigned switch. If the paper contains information in its upper, non-shredded area, it remains fully legible. As a result, data security is significantly impaired in such devices.

Um den genannten Nachteil zu beseitigen, ist man dazu übergegangen, Nachlaufeinrichtungen für das Schneidwerk vorzusehen, die einen elektrischen Zeitschalter aufweisen. Der elektrische Zeitschalter stellt sicher, daß das Schneidwerk, nachdem die hintere Kante des Papiers den Taster passiert hat, solange nachläuft, bis das Papier im Schneidwerk mit Sicherheit zerkleinert wurde.In order to eliminate the disadvantage mentioned, it has become common to provide follow-up devices for the cutting unit which have an electrical timer. The electrical timer ensures that the cutting unit continues to run after the rear edge of the paper has passed the button until the paper in the cutting unit has been shredded with certainty.

Die üblichen, ein elektrisches Zeitglied enthaltenden Nachlaufeinrichtungen stellen zwar sicher, daß der Informationsgehalt des Papiers im Schneidwerk sicher vernichtet wird, sie weisen jedoch den Nachteil auf, daß sie recht aufwendig und teuer sind.The customary follow-up devices containing an electrical timer ensure that the information content of the paper is safely destroyed in the cutting mechanism, but they have the disadvantage that they are quite complex and expensive.

Der Erfindung liegt die Aufgabe zugrunde, einen Schriftgutvernichter der genannten Gattung zu schaffen, der eine sehr kostengünstig herstellbare Nachlaufeinrichtung aufweist.The invention has for its object to provide a document shredder of the type mentioned, which has a very inexpensive to produce tracking device.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Dadurch, daß die Nachlaufeinrichtung einen mit dem Taster in Wirkverbindung stehenden, in einem Zylinder mit einem Entlüftungsventil und einer Einströmöffnung beweglichen Kolben aufweist, wird unter Verwendung verblüffend einfacher mechanischer Mittel eine sichere Steuerung des erforderlichen Nachlaufs des Schneidwerkes erreicht. Die Einzelteile der Nachlaufeinrichtung sind vorzugsweise als Kunststoffspritzteile kostengünstig herstellbar. Überraschenderweise hat es sich gezeigt, daß bereits bei Einhaltung der bei Spritzteilen üblichen Fertigungstoleranzen eine völlig ausreichende Genauigkeit der Nachlaufsteuerung problemlos erreichbar ist.This object is achieved by the features of claim 1. Characterized in that the trailing device has a piston that is operatively connected to the button, movable in a cylinder with a vent valve and an inflow opening, a reliable control of the required trailing of the cutting unit is achieved using amazingly simple mechanical means. The individual parts of the trailing device are preferably inexpensive to produce as plastic injection molded parts. Surprisingly, it has been shown that even if the manufacturing tolerances customary for molded parts are observed, a completely sufficient accuracy of the follow-up control can be achieved without problems.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Taster als um eine Achse verdrehbarer Schwenkhebel ausgebildet und weist einen Hebelarm auf, der an einer Kolbenstange des im Zylinder angeordneten Kolbens angelenkt ist. Diese Ausführungsform zeichnet sich durch eine sehr einfache, robuste Gestaltung aus.According to a preferred embodiment of the invention, the button is designed as a pivoting lever which can be rotated about an axis and has a lever arm which is articulated on a piston rod of the piston arranged in the cylinder. This embodiment is characterized by a very simple, robust design.

Weiterhin ist es vorgesehen, daß der Zylinder etwa senkrecht angeordnet ist und daß sich der Kolben nach der Freigabe des Tasters durch das Papier aufgrund des Eigengewichtes der beweglichen Teile der Nachlaufeinrichtung nach unten bewegt. Bei einer derartigen Ausführungsform erübrigt sich die Anordnung beispielsweise einer Druckfeder. Auch dieses Merkmal trägt dazu bei, daß die erfindungsgemäße Nachlaufeinrichtung äußerst kostengünstig hergestellt werden kann.Furthermore, it is provided that the cylinder is arranged approximately vertically and that the piston moves downward after the release of the button by the paper due to the weight of the moving parts of the trailing device. In such an embodiment, the arrangement of a compression spring, for example, is unnecessary. This feature also contributes to the fact that the trailing device according to the invention can be manufactured extremely inexpensively.

Wie es sich weiterhin gezeigt hat, ist es vorteilhaft, wenn die Einströmöffnung als Einströmdüse ausgebildet und im Zylinder am Sitz des Entlüftungsventils angeordnet ist. Die Anordnung einer Einströmdüse ermöglicht eine besonders exakte Dosierung der die Abwärtsbewegung des Kolbens ermöglichenden einströmenden Luft.As has also been shown, it is advantageous if the inflow opening is designed as an inflow nozzle and is arranged in the cylinder on the seat of the vent valve. The arrangement of an inflow nozzle enables particularly precise metering of the inflowing air which enables the piston to move downward.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt und im folgenden näher beschrieben. Es zeigen:

Fig. 1
den Bereich des Papiereinlaufschachtes eines Schriftgutvernichters, dessen Taster sich in der Ausschalt-Stellung befindet,
Fig. 2
zeigt den Taster gemäß Fig. 1 bei zugeführtem Papier in der Einschalt-Stellung für das Schneidwerk.
In the drawing, an embodiment of the invention is shown and described in more detail below. Show it:
Fig. 1
the area of the paper inlet shaft of a document shredder, the button of which is in the off position,
Fig. 2
shows the button of FIG. 1 with paper fed in the switch-on position for the cutting unit.

In der Zeichnung ist ein Bereich eines Papiereinlaufschachtes 1 eines Schriftgutvernichters 2 dargestellt. Der Schriftgutvernichter 2 weist ein Gehäuse 3 auf, das ein Schneidwerk 4 sowie einen in der Zeichnung nicht dargestellten Antrieb für ein Schneidwerk 4 und weitere Einzelteile umschließt. Am Papiereinlaufschacht 1 ist auf einer Achse 5 ein als verdrehbarer Schwenkhebel ausgebildeter Taster 6 angeordnet. Der Taster 6 ragt in seiner in der Fig. 1 dargestellten Ruhestellung in den Papiereinlaufschacht 1 hinein.In the drawing, an area of a paper inlet shaft 1 of a document shredder 2 is shown. The document shredder 2 has a housing 3, which encloses a cutting unit 4 and a drive (not shown in the drawing) for a cutting unit 4 and other individual parts. A button 6, which is designed as a rotatable pivoting lever, is arranged on the paper inlet shaft 1 on an axis 5. In its rest position shown in FIG. 1, the button 6 protrudes into the paper inlet shaft 1.

Der Taster 6 ist an ein Betätigungsglied 7 eines elektrischen Schalters 8 für das Schneidwerk 4 geführt. Sobald in den Papiereinlaufschacht 1 Papier 9 eingeführt wird, schwenkt der Taster 6 nach rechts, so daß der elektrische Schalter 8 über sein Betätigungsglied 7 betätigt wird.The button 6 is guided to an actuator 7 of an electrical switch 8 for the cutting unit 4. As soon as paper 9 is inserted into the paper inlet chute 1, the button 6 pivots to the right, so that the electrical switch 8 is actuated via its actuating element 7.

Der Taster 6 weist einen Hebelarm 10 auf, der an einer Kolbenstange 11 eines Kolbens 12 einer Nachlaufeinrichtung 13 angelenkt ist. Die Nachlaufeinrichtung 13 weist weiterhin einen etwa senkrecht angeordneten Zylinder 14 auf, in dem der Kolben 12 verschiebbar angeordnet ist. Die Kolbenstange 10 des Rasters 6 ist auf sehr einfache Art und Weise mit der Kolbenstange 11 gelenkig verbunden, indem sie durch eine Öffnung 20 der Kolbenstange 11 hindurchgeführt ist. Die Öffnung 20 weist, um eine Pendelbewegung des Hebelarms 10 zu ermöglichen, abgeschrägte Wandungen 15 auf.The button 6 has a lever arm 10 which is articulated on a piston rod 11 of a piston 12 of a follower 13. The trailing device 13 also has an approximately vertically arranged cylinder 14, in which the piston 12 is arranged displaceably. The piston rod 10 of the grid 6 is articulated to the piston rod 11 in a very simple manner by being passed through an opening 20 in the piston rod 11. In order to enable the lever arm 10 to oscillate, the opening 20 has bevelled walls 15.

Der Zylinder 14 ist an seiner Oberseite mit einem Entlüftungsventil 16 versehen. Das Entlüftungsventil 16 liegt aufgrund seines Eigengewichts auf einem Sitz 17 auf. Am Sitz 17 des Entlüftungsventils 16 ist eine Einströmdüse 18 angeordnet. Das Entlüftungsventil 16 steht über einen Be/Entlüftungskanal 19 mit der Umgebungsluft in Verbindung.The cylinder 14 is provided with a vent valve 16 on its upper side. The vent valve 16 rests on a seat 17 due to its own weight. An inflow nozzle 18 is arranged on the seat 17 of the vent valve 16. The vent valve 16 is connected to the ambient air via a ventilation duct 19.

Aus der Fig. 2 der Zeichnung ist ersichtlich, daß, sofern in den Papiereinlaufschacht 1 des Schriftgutvernichters 2 Papier 9 eingeführt wird, der Taster 6 um seine Achse 5 nach rechts verschwenkt wird. Der Taster 6 bewegt dann das Betätigungsglied 7 des elektrischen Schalters 8 gleichfalls nach rechts, so daß das Schneidwerk 4 des Schriftgutvernichters eingeschaltet wird. Sobald das Papier 9 in das Schneidwerk 4 gelangt, wird es zerkleinert, so daß die auf dem Papier vorhandenen Informationen vernichtet werden.From Fig. 2 of the drawing it can be seen that, provided that paper 9 is inserted into the paper inlet shaft 1 of the document shredder 2, the button 6 is pivoted about its axis 5 to the right. The button 6 then moves the actuator 7 of the electrical switch 8 to the right, so that the cutting unit 4 of the document shredder is switched on. As soon as the paper 9 reaches the cutting unit 4, it is shredded so that the information present on the paper is destroyed.

Beim Verschwenken des Tasters 6 durch das zugeführte Papier 9 wird weiterhin bewirkt, daß dessen Hebelarm 10 über die Kolbenstange 11 den Kolben 12 im Zylinder 14 nach oben bewegt. Die aus dem Zylinder 14 verdrängte Luft bewegt das Entlüftungsventil 16 nach oben, so daß die Luft über den Be/Entlüftungskanal 19 austreten kann. Die Nachlaufeinrichtung 13 verbleibt in dieser Position, solange der Taster 6 durch das zugeführte Papier 9 in seiner in der Fig. 2 dargestellten Position gehalten wird.When the button 6 is pivoted by the supplied paper 9, it is also caused that its lever arm 10 moves the piston 12 in the cylinder 14 upward via the piston rod 11. The air displaced from the cylinder 14 moves the vent valve 16 upward, so that the air can escape via the ventilation duct 19. The trailing device 13 remains in this position as long as the button 6 is held in its position shown in FIG. 2 by the paper 9 being fed.

Sobald der hintere Rand des im Papiereinlaufschacht 1 befindlichen Papiers 9 den Taster 6 passiert hat, wird am Kolben 12 das Eigengewicht des Systems, d. h. das Gewicht des Kolbens 12, der Kolbenstange 11, des Hebelarms 10 und des verschwenkbaren Teils des Tasters 6 wirksam. Dieses Eigengewicht kann, da am Sitz 17 des Entlüftungsventils 16 die Einströmdüse 18 angeordnet ist und somit Luft dosiert in den Zylinder 14 einströmen kann, den Kolben 12 langsam nach unten ziehen. Als Folge dieser Bewegung des Kolbens 12 wird über die Kolbenstange 11 und den Hebelarm 10 auch der Taster 6 langsam nach links in den Papiereinlaufschacht 1 bewegt. Das Schneidwerk 4 bleibt solange eingeschaltet, d. h. es zerkleinert weiterhin das zugeführte Papier 9, bis der Taster 6 seine linke Endlage erreicht hat. Erst dann hat sich das Betätigungsglied 7 soweit nach links bewegt, daß der elektrische Schalter 8 das Schneidwerk 4 stillsetzt. Durch eine entsprechende Dimensionierung der Einströmdüse 18 ist es möglich, die Menge der in einer bestimmten Zeiteinheit in den Zylinder 14 einströmenden Luft so zu begrenzen, daß die Bewegung des Kolben 12, d. h. die Bewegung des Tasters 6, so langsam erfolgt, daß das Schneidwerk 4 solange nachläuft, bis der hintere Rand des zugeführten Papiers 9 das Schneidwerk 4 mit Sicherheit passiert hat. Die erforderliche Nachlaufzeit des Schneidwerkes 4 ist abhängig von dessen Einzugsgeschwindigkeit und dem Abstand zwischen dem Schneidwerk 4 und dem Taster 6.As soon as the rear edge of the paper 9 located in the paper inlet shaft 1 has passed the button 6, the dead weight of the system, i.e. H. the weight of the piston 12, the piston rod 11, the lever arm 10 and the pivotable part of the button 6 effective. This weight can, since the inflow nozzle 18 is arranged on the seat 17 of the vent valve 16 and air can thus flow into the cylinder 14 in a metered manner, slowly pull the piston 12 downward. As a result of this movement of the piston 12, the button 6 is also slowly moved to the left into the paper inlet shaft 1 via the piston rod 11 and the lever arm 10. The cutting unit 4 remains switched on for as long as. H. it continues to shred the fed paper 9 until the button 6 has reached its left end position. Only then has the actuator 7 moved so far to the left that the electrical switch 8 stops the cutting unit 4. By appropriate dimensioning of the inlet nozzle 18, it is possible to limit the amount of air flowing into the cylinder 14 in a certain time unit so that the movement of the piston 12, i. H. the movement of the button 6 takes place so slowly that the cutting unit 4 continues to run until the rear edge of the fed paper 9 has passed the cutting unit 4 with certainty. The required overrun time of the cutting unit 4 is dependent on its retraction speed and the distance between the cutting unit 4 and the button 6.

Wie sich gezeigt hat, ist es gegebenenfalls durchaus möglich, die am Sitz 17 des Entlüftungsventils 16 angeordnete Einströmdüse 18 wegzulassen. Bei entsprechender Gestaltung können hier die Undichtigkeiten zwischen den Kolben 12 und der Innenwandung des Zylinders 14 als Einströmöffnung für die Belüftung des Zylinders 14 genutzt werden. Es hat sich gezeigt, daß auch bei einer derartigen Gestaltung die erforderliche Nachlaufzeit des Schneidwerkes 4 mit ausreichender Genauigkeit eingehalten werden kann. Eine derartige Lösung weist den Vorteil einer besonders einfachen Gestaltung auf.As has been shown, it may be entirely possible to omit the inflow nozzle 18 arranged on the seat 17 of the vent valve 16. With a corresponding design, the leaks between the pistons 12 and the inner wall of the cylinder 14 can be used as an inflow opening for the ventilation of the cylinder 14. It has been shown that even with such a design, the required overrun time of the cutting unit 4 can be maintained with sufficient accuracy. Such a solution has the advantage of a particularly simple design.

Das gleiche gilt grundsätzlich für die in der Zeichnung dargestellte Lösung mit einem senkrecht angeordneten Zylinder 14, die es ermöglicht, für die Rückstellbewegung des Kolbens 12 das Eigengewicht des Systems zu nutzen. Gegebenenfalls wäre hier auch eine andere Anordnung des Zylinders 14 denkbar, wobei dann unter Umständen zur Sicherstellung der erfindungsgemäßen Funktion z. B. Federkräfte genutzt werden müßten.The same applies in principle to the solution shown in the drawing with a vertically arranged cylinder 14, which makes it possible to use the dead weight of the system for the return movement of the piston 12. If necessary, a different arrangement of the cylinder 14 would also be conceivable, in which case, in order to ensure the function according to the invention. B. spring forces should be used.

Claims (5)

Schriftgutvernichter (2) mit einem im Papiereinlaufschacht (1) angeordneten, vom zugeführten Papier (9) betätigbaren Taster (6), der an einen elektrischen Schalter (8) zum Ein- und Ausschalten des Schneidwerkes (4) geführt ist und mit einer Nachlaufeinrichtung (13) für das Schneidwerk (4) nach dem Einzug des Papiers (9), dadurch gekennzeichnet, daß die Nachlaufeinrichtung (13) einen mit dem Taster (6) in Wirkverbindung stehenden, in einem Zylinder (14) mit einem Entlüftungsventil (16) und einer Einströmöffnung (Einströmdüse 18) beweglichen Kolben (12) aufweist, derart, daß der Kolben (12) bei einer Betätigung des Tasters (6) unter Öffnen des Entlüftungsventils (16) verschoben wird und sich dann, sobald das Papier (9) den Taster (6) freigegeben hat, da der Zylinder (14) über seine Einströmöffnung (Einströmdüse 18) belüftet wird, langsam in seine Ausgangslage zurückbewegt, wobei auch der Taster (6) in seine Ausgangsposition bewegt wird und schließlich den elektrischen Schalter (8) für das Schneidwerk (4) freigibt und dessen Nachlauf beendet.Document shredder (2) with a button (6) which is arranged in the paper inlet shaft (1) and can be actuated by the supplied paper (9), which is guided to an electrical switch (8) for switching the cutting mechanism (4) on and off and with a trailing device ( 13) for the cutting unit (4) after the paper (9) has been drawn in, characterized in that the trailing device (13) is operatively connected to the button (6), in a cylinder (14) with a vent valve (16) and an inflow opening (inflow nozzle 18) movable piston (12) such that the piston (12) is displaced when the button (6) is actuated while opening the vent valve (16) and then as soon as the paper (9) the button (6) has released, since the cylinder (14) is ventilated via its inflow opening (inflow nozzle 18), slowly moved back into its starting position, the button (6) also being moved into its starting position and finally the electr hen switch (8) for the cutting unit (4) releases and its wake ends. Schriftgutvernichter (2) nach Anspruch 1, dadurch gekennzeichnet, daß der Taster (6) als um eine Achse (5) verdrehbarer Schwenkhebel ausgebildet ist und einen Hebelarm (10) aufweist, der an einer Kolbenstange (11) des Kolbens (12) angelenkt ist.Document shredder (2) according to claim 1, characterized in that the button (6) is designed as a pivot lever which can be rotated about an axis (5) and has a lever arm (10) which is articulated on a piston rod (11) of the piston (12) . Schriftgutvernichter (2) nach Anspruch 1 und gegebenenfalls Anspruch 2, dadurch gekennzeichnet, daß der Zylinder (14) etwa senkrecht angeordnet ist und sich der Kolben (12) nach der Freigabe des Tasters (6) aufgrund des Eigengewichts der beweglichen Teile (10, 11, 12) der Nachlaufeinrichtung (13) nach unten bewegt.Document shredder (2) according to claim 1 and possibly claim 2, characterized in that the cylinder (14) is arranged approximately vertically and the piston (12) after the release of the button (6) due to the dead weight of the moving parts (10, 11 , 12) of the trailing device (13) moves downward. Schriftgutvernichter (2) nach Anspruch 1 und gegebenenfalls einem oder mehreren der weiteren Ansprüche, dadurch gekennzeichnet, daß die Einströmöffnung des Zylinders (14) als Einströmdüse ( ) ausgebildet ist.Document shredder (2) according to claim 1 and possibly one or more of the further claims, characterized in that the inflow opening of the cylinder (14) is designed as an inflow nozzle (). Schriftgutvernichter (2) nach Anspruch 4, dadurch gekennzeichnet, daß die Einströmdüse (18) am Sitz (17) des Entlüftungsventils (16) des Zylinders (14) angeordnet ist.Document shredder (2) according to claim 4, characterized in that the inflow nozzle (18) is arranged on the seat (17) of the vent valve (16) of the cylinder (14).
EP92101877A 1991-02-09 1992-02-05 Document shredding machine Expired - Lifetime EP0503268B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4103950A DE4103950C1 (en) 1991-02-09 1991-02-09
DE4103950 1991-02-09

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Publication Number Publication Date
EP0503268A1 true EP0503268A1 (en) 1992-09-16
EP0503268B1 EP0503268B1 (en) 1995-06-28

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ID=6424716

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Application Number Title Priority Date Filing Date
EP92101877A Expired - Lifetime EP0503268B1 (en) 1991-02-09 1992-02-05 Document shredding machine

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US (1) US5167374A (en)
EP (1) EP0503268B1 (en)
AT (1) ATE124297T1 (en)
DE (2) DE4103950C1 (en)
DK (1) DK0503268T3 (en)
ES (1) ES2075487T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102458663A (en) * 2009-06-18 2012-05-16 斐乐公司 Restrictive throat mechanism for paper shredders

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5531386A (en) * 1994-04-01 1996-07-02 Jensen; Reginald S. Pill pulverizer: apparatus
US5495988A (en) * 1994-07-11 1996-03-05 Follese; Robert D. Hypodermic needle grinder
JP3095114B2 (en) * 1994-08-31 2000-10-03 リコーエレメックス株式会社 Paper feeder for shredder and paper feed method using the same
CH690424A5 (en) * 1995-04-28 2000-09-15 Bobst Sa Processing device used in a metallized strips of metallized image transfer machine of the plate elements.
DE19545087C2 (en) * 1995-12-04 2003-06-12 Hermann Schwelling Small shredders
GB9601843D0 (en) * 1996-01-30 1996-04-03 Acco Rexel Group Holdings Plc Shredder with mechanical sensosr
DE19641934C2 (en) * 1996-10-11 1999-06-24 Hermann Schwelling Switch flap for stopping the cutting unit of document shredders and. devices
US5988539A (en) * 1996-10-24 1999-11-23 Tramor, Inc. Wood chipper with infeed chute safety device
TW320997U (en) * 1997-04-09 1997-11-21 Shao-Nong Tsai Switch of shredder
DE19757766A1 (en) * 1997-12-23 1999-06-24 Hermann Schwelling Device for delayed drive shutdown of document shredders
US5984215A (en) * 1998-01-22 1999-11-16 Huang; Li-Ming Wu Paper feeding sensor of paper shredder
US6250574B1 (en) * 1999-04-07 2001-06-26 Li-Ming Wu Huang Device for monitoring paper shredding action of paper shredder
GB9919439D0 (en) 1999-08-18 1999-10-20 Acco Rexel Group Serv Ltd Shredding machine
US6308904B1 (en) * 2000-05-15 2001-10-30 Frank Chang Delay drive-hanging device of a paper shredder
US6357684B1 (en) 2000-10-31 2002-03-19 Tramor, Inc. Adjustable tension feed wheel assembly for a wood chipper
US6722596B1 (en) 2001-01-31 2004-04-20 Tramor, Inc. Multiple wheel feed wheel assembly for a wood chipper
US6827300B2 (en) * 2001-07-24 2004-12-07 Primax Electronics, Ltd. Automatic start mechanism of shredding apparatus
US6729567B1 (en) 2001-07-31 2004-05-04 Tramor, Inc. Side feed wheel assembly for wood chipper
US6978954B2 (en) 2001-08-28 2005-12-27 Fellowes, Inc. Detector for a shredder
US7121488B1 (en) 2001-09-18 2006-10-17 Tramor, Inc. Spring assist assembly for infeed pan of wood chipper
JP3824909B2 (en) * 2001-11-09 2006-09-20 株式会社リコー Paper feeding device and sheet conveying device
US6830204B1 (en) 2001-12-10 2004-12-14 Tramor, Inc. Reversing automatic feed wheel assembly for wood chipper
US6955310B1 (en) 2002-05-21 2005-10-18 Tramor, Inc. Remote control assembly for wood chipper
DE10326950A1 (en) * 2003-06-12 2005-01-20 Martin Yale International Gmbh Shredders
US7014133B2 (en) * 2003-08-06 2006-03-21 Ming-Hui Ho Mechanical delaying device of shredder
US20050274834A1 (en) * 2004-06-14 2005-12-15 Michilin Prosperity Co., Ltd. Air-sac delay drive-hanging device of paper shredder
US8870106B2 (en) 2004-09-10 2014-10-28 Fellowes, Inc. Shredder with thickness detector
US7631822B2 (en) 2004-09-10 2009-12-15 Fellowes Inc. Shredder with thickness detector
US7954737B2 (en) 2007-10-04 2011-06-07 Fellowes, Inc. Shredder thickness with anti-jitter feature
US8672247B2 (en) 2005-07-11 2014-03-18 Fellowes, Inc. Shredder with thickness detector
US7156330B1 (en) * 2005-12-19 2007-01-02 Emily Lo Paper shredder delaying device
US7594620B2 (en) 2006-01-05 2009-09-29 Aron Abramson Shredder with reduced hazard potential
US7303158B1 (en) * 2006-03-29 2007-12-04 Aron Abramson Shredder head having shredder blades and an associated safety feature for protecting a portion of a person's body
US8109303B1 (en) 2006-04-27 2012-02-07 Tramor, Inc. Stump grinder having an automatic depth control system
US7204441B1 (en) 2006-07-07 2007-04-17 Fellowes Inc. Shredder apparatus and full bin indicator
CN2915259Y (en) 2006-07-14 2007-06-27 上海震旦办公设备有限公司 Paper shredder touch safety device
US8008812B2 (en) 2006-07-14 2011-08-30 Aurora Office Equipment Co., Ltd. Paper shredder control system responsive to touch-sensitive element
DE102006036136A1 (en) * 2006-07-28 2008-01-31 Martin Yale International Gmbh Paper shredder i.e. document annihilator, for cutting e.g. paper, has thickness measuring device arranged in area of inlet for measuring thickness of flat material and designed in contactless working manner as capacitive measuring device
TWM314070U (en) * 2006-11-30 2007-06-21 Michilin Prosperity Co Ltd Safety plate for paper feeding of movable shredder machine
NL1033116C2 (en) * 2006-12-22 2008-06-24 Syntech Holdings Bv Device for destroying sheet material.
CN201002037Y (en) * 2006-12-28 2008-01-09 世庆实业股份有限公司 Shredder paper entrance touch-stop safety device
DE102007020222B4 (en) * 2007-04-28 2014-03-06 Hermann Schwelling paper shredder
GB2451513B (en) * 2007-08-02 2012-04-18 Acco Uk Ltd A shredding machine
US20090134253A1 (en) * 2007-11-28 2009-05-28 Simon Huang Shredder safety throat
US7971812B2 (en) 2008-06-16 2011-07-05 Michilin Prosperity Co., Ltd. Power saving shredder
US8028942B2 (en) 2008-08-01 2011-10-04 Fellowes, Inc. Bin full detection with light intensity sensing
CN201239643Y (en) 2008-08-06 2009-05-20 上海震旦办公设备有限公司 Full automatic paper crusher without selecting paper
CN201244502Y (en) 2008-08-19 2009-05-27 上海震旦办公设备有限公司 Structure capable of removing nail of automatic paper crusher
US7823815B2 (en) * 2008-10-15 2010-11-02 Fellowes, Inc. Shredder with self adjusting sensor
US7823816B2 (en) * 2008-10-15 2010-11-02 Fellowes, Inc. Shredder with light emitting diode (LED) sensors
US8430347B2 (en) 2009-01-05 2013-04-30 Fellowes, Inc. Thickness adjusted motor controller
US8201761B2 (en) * 2009-01-05 2012-06-19 Fellowes, Inc. Thickness sensor based motor controller
US8505841B2 (en) * 2009-01-11 2013-08-13 Techtronic Floor Care Technology Limited Anti-jamming assembly for shredders of sheet like material
WO2010098599A2 (en) * 2009-02-25 2010-09-02 로얄소브린 주식회사 Automatic paper feed-sensing apparatus for a paper shredder, paper-feeding apparatus comprising same, and paper shredder comprising the automatic paper feed-sensing apparatus and the paper-feeding apparatus
CN201380106Y (en) 2009-02-25 2010-01-13 青岛皇冠电子有限公司 Automatic induction device of paper shredder
US8091809B2 (en) 2009-03-24 2012-01-10 Fellowes, Inc. Shredder with jam proof system
CN101543800A (en) 2009-05-07 2009-09-30 上海震旦办公设备有限公司 Paper jamming prevention protective device of paper shredder
US8205815B2 (en) 2009-05-15 2012-06-26 Fellowes, Inc. Paper alignment sensor arrangement
US8550387B2 (en) 2009-06-18 2013-10-08 Tai Hoon K. Matlin Restrictive throat mechanism for paper shredders
US8382019B2 (en) 2010-05-03 2013-02-26 Fellowes, Inc. In-rush current jam proof sensor control
US8511593B2 (en) 2010-05-28 2013-08-20 Fellowes, Inc. Differential jam proof sensor for a shredder
WO2012040927A1 (en) * 2010-09-30 2012-04-05 Yang Meiying Paper shredder
US8723468B2 (en) 2011-04-28 2014-05-13 Aurora Office Equipment Co., Ltd. Cooled motor
US8708260B2 (en) 2011-08-08 2014-04-29 Aurora Office Equipment Co., Ltd. Depowered standby paper shredder and method
CN103537349B (en) * 2012-07-13 2015-04-15 致伸科技股份有限公司 Paper shredder with paper feeding gap regulating device
DE102014100669A1 (en) 2013-01-26 2014-07-31 Hermann Schwelling Shredder
US10639642B2 (en) * 2015-03-19 2020-05-05 Aurora Office Equipment Co., Ltd. Shanghai Shredder jam clear apparatus
EP3560599B1 (en) * 2018-04-27 2020-10-28 Rapid Granulator AB Feeding arrangement for a granulator and granulator comprising such a feeding arrangement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282483A (en) * 1926-09-15 1927-12-15 Henry Vincent James Improvements relating to alternating current motor starters or controllers
FR1039601A (en) * 1950-01-25 1953-10-08 Svenska Ackumulator Ab Device for the production of current pulses separated by time intervals of adjustable length
DE2045280A1 (en) * 1970-09-14 1972-03-16 Ehinger, Adolf, 7460 Baiingen Device for destroying files

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888478A (en) * 1974-05-23 1975-06-10 Sperry Rand Corp Sheet limiter
CA1263125A (en) * 1984-06-01 1989-11-21 Hans-Guenter E. Kuehnert Apparatus for the automatic feeding of a laminating station
JPS6365961A (en) * 1986-09-08 1988-03-24 シャープ株式会社 Document shredder
DE3863657D1 (en) * 1987-03-04 1991-08-22 Sharp Kk SHREDDER.
DE3843602A1 (en) * 1988-12-23 1990-07-05 Gao Ges Automation Org PROCEDURE OR DEVICE FOR AUTOMATICALLY MONITORING THE DESTRUCTION OF THIN LEAF
US5042790A (en) * 1990-02-16 1991-08-27 Xerox Corporation Toggled switch for use in a sheet feed apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB282483A (en) * 1926-09-15 1927-12-15 Henry Vincent James Improvements relating to alternating current motor starters or controllers
FR1039601A (en) * 1950-01-25 1953-10-08 Svenska Ackumulator Ab Device for the production of current pulses separated by time intervals of adjustable length
DE2045280A1 (en) * 1970-09-14 1972-03-16 Ehinger, Adolf, 7460 Baiingen Device for destroying files

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102458663A (en) * 2009-06-18 2012-05-16 斐乐公司 Restrictive throat mechanism for paper shredders
CN102458663B (en) * 2009-06-18 2014-08-27 斐乐公司 Restrictive throat mechanism for paper shredders

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DK0503268T3 (en) 1995-11-13
US5167374A (en) 1992-12-01
DE59202646D1 (en) 1995-08-03
ES2075487T3 (en) 1995-10-01
ATE124297T1 (en) 1995-07-15
EP0503268B1 (en) 1995-06-28
DE4103950C1 (en) 1992-04-23

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