Theft Deterrent Device Including a Spring Washer

• US 20100031711A1
• Filed: 07/27/2009
• Published: 02/11/2010
• Est. Priority Date: 08/07/2008
• Status: Active Grant

• Current Assignee: CHECKPOINT SYSTEMS, INC. (CCL Industries Incorporated)
• Original Assignee: CHECKPOINT SYSTEMS, INC. (CCL Industries Incorporated)
• Inventors: McKeown, Thomas
• Granted Patent: US 8,117,874 B2
• Time in Patent Office: Days
• US Class Current: 70/57.100
• CPC Class Codes: E05B 2015/0465 Cup- or dished-disc springs
• CPC Class Codes: E05B 73/0017 Anti-theft devices, e.g. tags or monitors, fixed to articles, e.g. clothes, and to be removed at the check-out of shops
• CPC Class Codes: E05B 73/0052 of the magnetic type
• CPC Class Codes: G09F 3/0305 characterised by the type of seal used
• CPC Class Codes: G09F 3/0317 having bolt like sealing means means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it F16B21/00
• CPC Class Codes: G09F 3/12 by pins, staples, or the like
• CPC Class Codes: Y10T 24/50 Readily interlocking, two-part fastener requiring either destructive or tool disengagement
• CPC Class Codes: Y10T 70/5004 For antitheft signaling device on protected article

Abstract

A device to protect an article from theft is disclosed. The device includes a pointed pin member to enable attachment of the device to the article to be protected from theft. A housing disposed within the device includes a floor and a wall tapering towards a confining end. The housing includes coaxial openings for insertably receiving the pin member. A ball clutch mechanism is located within the housing and includes a plurality of balls. As the balls are urged towards the confining end of the housing, they wedge between the tapering wall and the pin member to apply increasing radial pressure against the pin member to prevent it from being withdrawn from the device. The floor includes a member which deflects downwardly upon insertion of the pin member into the housing to apply a radial force against the pin member to frictionally engage it within the device.

Claims

1. A theft protection device comprising:

a. a pin member for attaching said device to an article to be protected from theft;

b. a housing disposed within said device, said housing including a floor and a wall tapering towards a confining end;

c. a ball clutch mechanism disposed within said housing, said ball clutch mechanism applying radial pressure against said pin member to prevent said pin member from being removed from said device;

d. coaxial openings extending through said housing and said ball clutch mechanism for insertably receiving said pin member in a longitudinal direction; and

,

e. said floor comprising a deflectable member which deflects in a direction away from the confining end of the housing upon insertion of said pin member to apply a radial force against said pin member to frictionally engage said pin member within said device.

2. The theft protection device of claim 1, wherein said ball clutch mechanism comprises a plurality of balls.

3. The theft protection device of claim 2, additionally comprising a magnetic unlocking device for applying a magnetic force along said vertical direction to release said plurality of balls from said pin member whereby said pin member may be released and removed from said theft protection device.

4. The theft protection device of claim 3, wherein said floor includes a plurality of radially extending bendable tabs formed of a magnetic material, wherein in response to said magnetic force, said tabs bend in a direction away from said confining end of said housing to release said plurality of balls from said pin member.

5. The theft protection device of claim 1, wherein the pin member includes a diameter and wherein said opening within said ball clutch mechanism is less than said diameter.

6. The theft protection device of claim 2, wherein said balls are formed of a material attracted to magnetic force.

7. The theft protection device of claim 2, wherein said balls are formed of a non-magnetic material.

8. The theft protection device of claim 2, wherein said balls are uniformly dimensioned.

9. The theft protection device of claim 2, wherein said ball clutch mechanism includes four balls.

10. The theft protection device of claim 1, wherein said ball clutch mechanism includes three balls.

11. The theft protection device of claim 9, wherein said four balls are uniformly dimensioned.

12. The theft protection device of claim 1, wherein said pin member comprises an expansive head and an elongated shank attached to said expansive head and being pointed at one end for enabling attachment to an article to be protected from theft by inserting the pointed end of the elongated shank through the article and into the coaxial openings of said housing and said ball clutch.

13. The theft protection device of claim 1, wherein said housing comprises a cup-like structure having a hollow interior.

14. The theft protection device of claim 2, wherein in response to an attempt to remove said pin member from said device, said plurality of balls are forced towards the confining end of the cup and are wedged between the tapering wall and said pin member to apply radial pressure against said pin member to prevent its removal from said device.

15. The theft protection device of claim 3, wherein upon release and removal of said pin member from said theft protection device, said plurality of balls remain disposed within said housing.

16. The theft protection device of claim 15, wherein said device is reusable.

17. The theft protection device of claim 3 additionally comprising a hopper located adjacent to said housing, wherein said floor additionally comprises an enlarged aperture, and upon release and removal of said pin member from said theft protection device, at least one of said plurality of balls falls through said opening and into said hopper.

18. The theft protection device of claim 17, wherein said device is not reusable.

19. The theft protection device of claim 17, wherein said enlarged aperture is centrally and said deflectable member extends into said aperture.

20. A theft protection device comprising:

a. a pin member for attaching said device to an article to be protected from theft;

b. a housing disposed within said device, said housing including a floor and a wall tapering towards a confining end;

c. a ball clutch mechanism disposed within said housing, said ball clutch mechanism comprising a plurality of balls applying radial pressure against said pin member to prevent said pin member from being removed from said device;

d. coaxial openings extending through said housing and said ball clutch mechanism for insertably receiving said pin member in a longitudinal direction; and

,

e. said floor comprising a plurality of radially extending bendable tabs formed of a magnetic material, wherein in response to a magnetic force, said tabs bend in a direction away from said confining end of said housing to release said plurality of balls from said pin member.