Solid state drive media destroyer

Abstract

Disclosed is an apparatus for destroying the operational aspects and electronic media of a Solid State Drive (SSD) yet maintaining the physical shape of the SSD for identification. The apparatus includes a crusher box having counter-rotating rollers that are intermeshed to provide a high speed feed of an SSD wherein teeth formed on the rollers render the electron media non-accessible and impart a distinctive waffle like appearance for ease of identifying destroyed SSD's. A VFD-PID controller is used to vary the speed of an electric motor 50 with the PID having a feedback signal that allows for various target values to be set.

Claims

1. An apparatus for destroying a solid state drive (SSD) through waffle pattern indentations to provide visual identification of SSD destruction, said apparatus comprising: a crushing box housing a first roller rotatable in a clockwise direction around a first axis, and a second roller rotatable in a counter-clockwise direction around a second axis, said first axis spaced apart from said second axis, said first and second roller each having 24 rows of teeth constructed of Rockwell hardness of 62-64 HRc, each row of teeth further defined by 20 individual teeth each having a 5 mm width and a 45 degree tip with a side edge positioned at about 15 degrees, each said row of teeth spaced apart from an adjoining row by a gap of about 7 mm, said first and second rollers are constructed and arranged to instill a waffle pattern indentation in an SSD passing between said rollers; an adjustable block positioning said first axis and said second axis in the spaced apart position, said adjustable block is configured to maintain spacing between said rollers, spacing selected from the group consisting of: 3.8 mm penetration of an SSD when said first and second roller axis is spaced apart by 66 mm, 5.3 mm penetration of an SSD when said first and second roller axis is spaced apart by 64.5 mm, 6.8 mm penetration of an SSD when said first and second roller axis is spaced apart by 63 mm, or 8.3 mm penetration of an SSD when said first and second roller axis is spaced apart by 61.5 mm; a drive mechanism coupled to a gear motor constructed and arranged to pass at least 720 SSD's per hour between said first and second roller, said drive mechanism including a variable frequency drive unit with a proportional integral derivative controller (VFD-PID), said VFD providing PID feedback signal for detecting an over-torque condition; wherein an allowable torque (t) determined by:
t=9950*p/n(1800*gear ratio) t is in NM, p is in kw, and n is rpm's; said VFD reverses rotation of said rollers when the over-torque condition is detected; wherein an SSD inserted into said crushing box is drawn between said first and second roller whereby said rollers impart a waffle pattern to permanently disfigure an SSD thereby providing visual verification that the SSD had been rendered inoperable.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a front perspective view of the SSD high speed destroyer of the instant invention;

(2) FIG. 2 is a top view depicting the crush box and driver;

(3) FIG. 3 is a top plane view of the crush box;

(4) FIG. 4 is a top plane view of the crush box with dimensions;

(5) FIG. 5 is an end view of the crush box;

(6) FIG. 6 is a side view of the first roller;

(7) FIG. 7 is a side view of the second roller;

(8) FIG. 8 is a side view of the teeth; and

(9) FIG. 9 is an end view of the teeth;

(10) FIG. 10 is a plane side view of an SSD;

(11) FIG. 11 is a plane side view of a destroyed SSD; and

(12) FIG. 12 is a rear prospective view of the SSD high speed destroyer.

DETAILED DESCRIPTION OF THE INVENTION

(13) While the present invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described presently preferred embodiments with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated.

(14) Referring now to the Figures, set forth is an apparatus for destroying solid state drives (SSD). The apparatus employs a crushing box 10 having a first roller 12 with a first centrally disposed axle 14 spaced apart from a second roller 16 with a second centrally disposed axle 18. The first roller 12 and the second roller 16 are positioned to be counter-rotating with directional teeth. The entryway 76 to the crusher box 10 is located on an upper surface 102 of the housing. A pullout drawer 104 houses a wheel mounted receptacle 106 for use in capturing SSD's fed through the entryway 76 for destruction. An upper portion 108 of the drawer 104 is sloped to cause spent SSD's to fall within the wheel mounted receptacle 106. A control module 110 employs sensors to detect media feed jams with a controller to automatically reverse the fee to unjam the media. The control module 110 automatically powers off after 60 seconds of inactivity to conserve energy. RFI and EMI suppression minimize interference with local electronic equipment.

(15) In a preferred embodiment the first roller 12 is defined by an outer diameter D1 of about 69.85 mm, an inner diameter D2 of about 50 mm, and a width W1 of about 5.5 mm. From the outer diameter D1 to the inner diameter D2 each tooth 22 has an insertion tip 24 with leading side surface 26 and a trailing side surface 28 formed at an angle A1 of about 45 degrees. The leading side surface 26 is formed at an angle A2 of about 15 degrees from a centrally disposed axle 30. The trailing side surface 28 is formed at an angle A3 of about 30 degrees from the centrally disposed axle 30. For drawing simplicity, each tooth of the twenty four 22 are formed of the same angles with a single tooth numbered to avoid drawing confusion. The first roller and the second roller 16 are interchangeable with the first roller 12. However, the second roller 16 is positioned in the crush box 10 in a reverse format wherein the leading side surface 26 of each tooth 22 is used to grab an SSD and pull the SSD between the rollers 12, 16 for destruction.

(16) Each tooth on the first roller 12 having a width W1 is spaced apart from an adjoining tooth by width W2 of about 7 mm. The spacing is formed by positioning the first roller 12 centrally disposed axis 30 from the second roller 16 having a centrally disposed axis 36 by a distance D3 of about 71 mm which provides a gap G of about 5 mm between the inner diameters of each roller. The rollers 12 & 16 are constructed of high Rockwell hardness 62-64 HRc. The rollers 12 & 16 are preferably adjustable wherein the teeth are positioned to cause maximum cutting with a 61.5 mm center to center spacing having 8.3 mm penetration, as well as lesser cuttings of 63 mm having 6.8 mm penetration, 64.5 mm having 5.3 mm penetration, or 66 mm center to center having a spacing between teeth of about 3.8 mm.

(17) The control module 110 is coupled to a variable frequency drive and proportional integral derivative (“VFD-PID”) controller 111 for rotation of the first roller 12 in a clockwise direction. The first roller 12 rotatably coupled to the second roller 16 in a counter-clockwise direction by the spur gears 66 and 68. The VFD-PID controller 111 is used to vary the speed of the electric motor 50 by changing the frequency of the electric power going to the motor. Conventional power operates at 60 hertz (Hz) and the motors operated at 900, 1,200, 1,800 rpm, or 3,600 rpm depending on how the motor is wound. In the case of the HTP-SSD, operating on single phase power connected to 4-pole, 1.1 kw motor by a single-phase in and 3-phase out VFD.

(18) The VFD-PID controller 111 provides frequency setting and motor switching (i.e. 50 Hz, 60 Hz, Acceleration, Deceleration, Forward, Reverse, etc.). Incorporated into the VFD is a PID feedback signal that allows for various target values to be set. One of the parameters is “Over-torque Detection”. When the output current exceeds over-torque detection level and exceeds over-torque detection time, the over-torque detection will flag the system. The warning will be off only until the output current is smaller than 5% of the over-torque detection level. This “Over-torque Detection” function prevents jams and allows the user to recover from a jam if one occur wherein Torque Calculation t=9550*p/n, p is power in kw, n is rpm (1800*gear ration=170:1), t unit is NM.
t=9550*1.1/(1800/170)=992 NM

(19) The interlacing tooth discs 30 penetrates and shears, leaving an imprint indention pattern on the SSDs. The roller assembly is made up of individually stacked discs 30 rotated every 60 degrees to create a helical pattern. The hardened discs material has a maximum yield strength to withstand ultimate stresses beyond its typical use, but in case of tooth facture, the granularity of the interlacing teeth compensates for missing tooth tips. Even much so, the rollers are interchangeable, and each disc can be replaced with minimal effort.

(20) The first roller 12 and the second roller 16 operate jointly to pull an SSD between the teeth 22 with a distinctive waffle pattern cut into the SSD. The destroyed SSD remain intact so that they can be counted manually or otherwise verified. The SSD can be 1.8″ or 2.5″ drives using either plastic or metal cases.

(21) The instant invention operates using identifiable geometry differences (i.e. no spring tension, cam linkages, spring pistons, etc.). The counter rotating teeth rollers are interchangeable for ease of service and provides interlacing spacing for imprint granularity (2 mm×2 mm or less). The drive mechanism operates using a gear electric motor 50, coupled to two spur gears 66 & 68, and controlled by the variable frequency drive—proportional-integral-derivative controller 111, which deforms and imprints a pattern on SSD drives at a high rate of speed using the PID constant feedback signal. (<3 seconds per 2.5-inch SSDs).

(22) The rollers are operated by a electric motor 50 that is coupled to a gear box 52. The electric motor operates a 3600 rpm's drawing 15 amps at 100 volts or 7.5 amps at 220 volts. The gear box 52 reduces the speed providing an increase in torque for rotation of a gear 54 causing rotation of a chain 56 that is attached to a sprocket 58 of the second roller 16. The sprocket 58 provides a direct rotation of the roller which is held in position by frontal bearings 60 and rear bearing 62. The end 64 of the second roller 16 includes driver gear 66 that meshes with receipt gear 68 causing rotation of the first roller 12. The first roller having frontal bearings 68 and rear bearing 70. Forward and rearward adjustment blocks 72 and 74 provide an adjustable spacing between the first roller 12 and the second roller 16.

(23) The crusher box 10 includes an entry 76 and exit 78. Preferably the entry 76 includes alignment pins 80 located on either side of the entry 76 to maintain an SSD placed into the entry to assure gravity will assist in aligning the SSD between the rollers 12 and 16. The angles on the frontal side surface of the teeth are positioned to assure that the teeth will grab the SSD allowing assurance that the media will be pulled into the crusher box.

(24) FIG. 10 illustrates an SSD 91 that may have been destroyed through conventional demagnification or still operational. Without markings on the casing, the destruction of the electronic media can only be assumed. FIG. 11 illustrates an SSD that that been drawn through the rollers of the instant invention. The casing 93 has been permanently disfigured with a pattern of penetrations 95 that is easily recognized thereby providing visual verification that the particular SSD had been rendered inoperable.

(25) The terms “comprise” (and any form of comprise, such as “comprises” and “comprising”), “have” (and any form of have, such as “has” and “having”), “include” (and any form of include, such as “includes” and “including”) and “contain” (and any form of contain, such as “contains” and “containing”) are open-ended linking verbs. As a result, a method or device that “comprises,” “has,” “includes” or “contains” one or more steps or elements, possesses those one or more steps or elements, but is not limited to possessing only those one or more elements. Likewise, a step of a method or an element of a device that “comprises,” “has,” “includes” or “contains” one or more features, possesses those one or more features, but is not limited to possessing only those one or more features. Furthermore, a device or structure that is configured in a certain way is configured in at least that way, but may also be configured in ways that are not listed. The term “about” means, in general, the stated value plus or minus 5%.

(26) It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to the specific form or arrangement herein described and shown. It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention and the invention is not to be considered limited to what is shown and described in the specification and any drawings/figures included herein.

(27) One skilled in the art will readily appreciate that the present invention is well adapted to carry out the objectives and obtain the ends and advantages mentioned, as well as those inherent therein. The embodiments, methods, procedures and techniques described herein are presently representative of the preferred embodiments, are intended to be exemplary and are not intended as limitations on the scope. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention and are defined by the scope of the appended claims. Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the invention which are obvious to those skilled in the art are intended to be within the scope of the following claims.