Dual functional medium shredding machine structure

• US RE44,865 E1
• Filed: 04/27/2007
• Issued: 04/29/2014
• Est. Priority Date: 10/10/2000
• Status: Expired due to Term

• Current Assignee: Michilin Prosperity Company Limited (Michilin Prosperity)
• Original Assignee: Michilin Prosperity Company Limited (Michilin Prosperity)
• Inventors: Chang, Frank
• Primary Examiner(s): Rosenbaum, Mark
• Application Number:
  US11/790,892
• Time in Patent Office: 2,559 Days
• Field of Search: 241/36, 241/76, 241/166, 241/236, 241/100
• US Class Current: 241/36
• CPC Class Codes: B02C 18/0007 specially adapted for disintegrating documents
• CPC Class Codes: B02C 18/148 specially adapted for disintegrating plastics, e.g. cinematographic films for plastic bottles B02C19/0093, disintegrating plastics B29B17/00
• CPC Class Codes: B02C 2018/0015 for disintegrating CDs, DVDs and/or credit cards
• 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 23/10 with separator arranged in discharge path of crushing or disintegrating zone

Abstract

This invention is related to a dual-functional medium shredding machine structure, specifically designed for shredding or destroying paper printed with data to be destroyed, optical discs containing data to be destroyed, or expired credit cards. This invention mainly implements a pair of shredding roller blades with sharp teeth as shredding means, and is characterized by providing separate feeding inports, including a paper inport for feeding paper in an inclined orientation, and a disc inport for feeding discs in a vertical orientation, wherein the inports are each led to the same shredding roller blades such that, regardless of the type of substance being fed by the user, the paper or the discs can both be shredded by the shredding roller blades, and the shredded scraps are dispensed to separate collectors through an identical exit by means of an auto-revolving switch plate; and a touch switch at each of the inports such that, while feeding the paper or the discs, the touch switch activates the shredding roller blades to perform shredding task, and drives the switch plate so as to dispense shredded scraps of different substance into different collectors.

Claims

1. A dual-functional medium shredding machine structure, that allows shredding of paper, optical discs, and credit cards, characterized in comprising:

a machine body being provided with a power switch on a surface thereof and roller blades therein, the roller blades being driven by a gearbox;

two inports on an upper lid thereof, the inports including a paper inport with an opening of a larger dimension and inclined, curved channel walls, and a disc inport with an opening of a smaller dimension and vertical channel walls, the inports being each led to the shredding roller blades such that, regardless of the type of substance being fed by a user, the paper or the disc can all be shredded by the shredding roller blades through the intermeshing of roller blades;

a paper touch switch being provided at an appropriate location between the paper inport and the roller blades; and

a disc touch switch being provided at an appropriate location between the paper inport and the roller blades;

whereby the roller blades are activated by the touch switches when paper, discs, or credit cards are fed and touch the touch switches so as to activate the roller blades to perform intermeshing and shredding task.

2. The dual-functional medium shredding machine structure of claim 1, wherein the machine body is provided with a scrap exit at a base thereof, the scrap exit being provided with a switch plate that is switchable to a desired direction by means of a driving mechanism, such that while the paper touch switch or the disc touch switch is touched by paper, discs, or credit cards, the touch switch also activates rotation of the switch plate so as to change the direction of the scrap exit thereby dispensing shredded scraps of different substance into different bins.

3. The dual-functional medium shredding machine structure of claim 1, wherein the disc inport is dimensioned to have an opening width that only allows a single piece of optical disc or credit card to pass thereby preventing overloading and damaging of the roller blade.

4. The dual-functional medium shredding machine structure of claim 1, wherein the paper inport and the disc or card inport are both led to the roller blades, a single touch switch is provided between the roller blades such that regardless of the type of substance being fed by a user, the paper, disc, or credit cards can all touch the touch switch so as to activate the roller blades to perform shredding task while the scraps are all dispensed to an identical bin.

5. A dual-functional medium shredding machine structure, that allows shredding of paper and discs or cards, said paper and discs or cards each having a width, a length, and a thickness, characterized in comprising:

a machine body being provided with a single set of intermeshing shredding blades therein;

at least two spaced apart inports on an upper lid thereof, the inports including a paper inport with an opening having a greater length sized to receive a piece of paper and a width corresponding to a thickness of at least one sheet of said paper, and a disc or card inport with an opening having a lesser length sized to receive an optical disc or credit card and a width corresponding to said thickness of said optical disc or credit card, said lesser length being smaller than said greater length, the inports both leading to the shredding blades such that, regardless of whether the type of substance being fed by a user is paper, a disc, or a card, the paper, disc, or card can all be shredded by the shredding-blades through the intermeshing of the blades.

6. The dual-functional medium shredding machine structure of claim 5, further comprising a first blade-activation switch situated between the paper inport and the shredding blades and a second blade-activation switch situated between the disc or card inport and the shredding blades, wherein the machine body is provided with a scrap exit at a base thereof, the scrap exit being provided with a switch plate that is switchable to a desired direction by means of a driving mechanism, such that while a respective one of said first or second blade-activation switches is caused to activate said shredding blades by the presence of paper, a disc, or a card in one of the inports, the respective first or second blade-activation switch also activates rotation or the switch plate so as to change the direction of the scrap exit thereby dispensing shredded scraps of different substance into different bins.

7. The dual-functional medium shredding machine structure of claim 5, wherein the disc or card inport is dimensioned to have an opening width that only allows a single piece of optical disc or credit card to pass thereby preventing overloading and damaging of the shredding blades.

8. The dual-functional medium shredding machine structure of claim 5, wherein the paper inport and the disc or card inport are both led to the shredding blades, and a single switch is provided between the shredding blades such that regardless of the type of substance being fed by a user, the paper, disc, or credit cards can all cause the switch to activate the shredding blades to perform a shredding task while the scraps are all dispensed to an identical bin.

9. The dual-functional medium shredding machine structure of claim 5, wherein:

a first blade-activation switch is provided at an appropriate location between the paper inport and the shredding blades; and

a second blade-activation switch is provided at an appropriate location between the paper inport and the shredding blades;

whereby the shredding blades are activated by the first or second blade-activation switch to form an intermeshing and shredding task when paper, discs, or credit cards are fed into either of the paper and disc or card inports.

10. The dual-functional medium shredding machine structure of claim 9, wherein said first and second blade-activation switches are touch switches.

11. The dual-functional medium shredding machine structure of claim 5, wherein said shredding blades are roller blades.