Comminuting Apparatus, Especially Document Shredder

• US 20070215728A1
• Filed: 01/15/2005
• Published: 09/20/2007
• Est. Priority Date: 01/22/2004
• Status: Active Grant

• Current Assignee: Krug & Priester GmbH & Co. KG
• Original Assignee: Krug & Priester GmbH & Co. KG
• Inventors: Priester, Wolfgang
• Granted Patent: US 7,712,688 B2
• Time in Patent Office: Days
• US Class Current: 241/37.500
• CPC Class Codes: B02C 18/0007 specially adapted for disintegrating documents
• CPC Class Codes: B02C 18/2291 Feed chute arrangements
• CPC Class Codes: B02C 2018/0023 Switching devices
• CPC Class Codes: B02C 2018/0046 Shape or construction of frames, housings or casings
• CPC Class Codes: B02C 2018/168 User safety devices or measures in shredders
• CPC Class Codes: B02C 23/04 Safety devices in general F16P ; for rotary mills B02C13/31

Abstract

Disclosed is a comminuting apparatus, particularly a document shredder, comprising an approximately funnel-shaped feeding area (2) for the material that is to be comminuted. In order to make the apparatus safer while keeping the same easy to operate, a flap which constricts the feeding area (2) to a narrow feeding path (13) and extends across the width thereof is pivotally and/or movably (9) mounted in the feeding area (2).

Claims

1. A comminuting apparatus, especially a document shredder, comprising an approximately funnel-shaped feeding area for the material that is to be comminuted, wherein a flap or the like located in the feeding area constricts the feeding area to a narrow feeding path and extends across the width thereof is pivotally and/or movably mounted in the feeding area.

2. The comminuting device according to claim 1, wherein the flap is movably or pivotally mounted in a position which unblocks the feeding area.

3. The comminuting device according to claim 1, wherein the flap surface located opposite a support surface for the material to be comminuted extends parallel or in a sharp angle thereto in the direction toward the feed.

4. The comminuting apparatus according to claim 1, wherein the rotational axis of the flap is located in the upper part of the feeding area or above the feeding area.

5. The comminuting device according to claim 4, wherein the rotational axis of the flap is arranged behind and above a surface opposite the support surface of the feeding area.

6. The comminuting apparatus according to claim 1, wherein the rotational axis of the flap is pivotally mounted in an elongated hole which extends approximately perpendicularly to the support surface of the material to be comminuted and is movable against the spring force in opposite direction to the support surface.

7. The comminuting device according to claim 6, wherein the rotational axis of the flap actuates a switchgear which turns off the drive when a certain force or a certain displacement path is exceeded.

8. The comminuting apparatus according to claim 1, wherein the flap is connected with a switch which turns off the forward drive when the flap is lifted.

9. The comminuting apparatus according to claim 1, wherein an electric switchgear, especially a contactless operating electronic and hysteresis-free working device which turns off the drive when the flap is pivoted upwards or, especially shifted in the arrow direction.

10. The comminuting apparatus according to claim 9, wherein the switchgear is bridgeable by means of a touch contact.

11. The comminuting apparatus according to claim 9, wherein the switchgear can be switched particularly by means of a contact switch which produces a temporary switch pulse both in a forward and reverse direction.