CA2120995A1 - Security retaining member - Google Patents
Security retaining memberInfo
- Publication number
- CA2120995A1 CA2120995A1 CA002120995A CA2120995A CA2120995A1 CA 2120995 A1 CA2120995 A1 CA 2120995A1 CA 002120995 A CA002120995 A CA 002120995A CA 2120995 A CA2120995 A CA 2120995A CA 2120995 A1 CA2120995 A1 CA 2120995A1
- Authority
- CA
- Canada
- Prior art keywords
- core
- retaining member
- petal
- security
- portions
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K13/00—Making locksmiths' goods, e.g. handles for cases
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B73/00—Devices for locking portable objects against unauthorised removal; Miscellaneous locking devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
SECURITY RETAINING MEMBER
Abstract of the Disclosure A security retaining member with a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion and a material in which the core is embedded. Each of the petal-like portions comprises a hole through which the material in which the core is embedded is permitted to flow during the fabrication of the member for enhancing the adherence of the material to the core. The material typically comprises 60 durometer neoprene.
Abstract of the Disclosure A security retaining member with a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion and a material in which the core is embedded. Each of the petal-like portions comprises a hole through which the material in which the core is embedded is permitted to flow during the fabrication of the member for enhancing the adherence of the material to the core. The material typically comprises 60 durometer neoprene.
Description
2~2~
S~CURITY RETAINING MEMBER
Inventor: Donald W. Kelley BACKGROUND OF I~IE INVENTION
, Field of the Invention The pre~ent invention relates to ~ecurity apparatus in general and in particular to a ~ecurity retaining member which i~ u~ed in conjunction with an adhesive for retaining equipment and/or parts in a security apparatu~.
Deacription of the Related Art To prevent theft or unauthorized removal of equipment, ~ecurity apparatus using cable~ and/or variou~
type~ of key-operated housings in conjunction with bracket~, bolte, adhesive pads, rubberized retaining member~ with an adheqive and the like, i~ used for mounting or otherwise attaching equipment to an underlying ~urface. For example, in applicant's U.S.
Patent No. 5,135,1g7, entitled Equipment Security Method and Apparatu~, a~signed to the a~signee of the present application, there is provided a ba~e member and a cover member. The base member is attached to a vertical or horizontal surface by means of bolt~ or adhesive pads, plate~ and/or brackets a3 required in a particular in~tallation. ~ne cover member i~ removably attached to the base member by mean~ of a key operated lock. The equipment to be secured i~ attached to the cover member ~, by mean~ of U-shaped rod members, bracket members with inwardly directed fingers for engaging holee in the sides of the equipment or the like.
In U.S. Patent No. 4,739,637 entitled Locking Device for Portable Equipment, bolt~ are disclosed ~or use in mounting a typewriter or the like in a ~ecure fa~hion to an underlying hou~ing in a security apparatus.
-- 212~
.
In U.S. Patent No. 4,712,763 entitled Security Device for Office Machines, foot members comprising rubber-like diek~ are disclosed for use in conjunction with an adhesive for mounting the disks to the under~urface of an office machine or the like for subsequent attachment to a housing in an underlying security device.
In applicant~s U.S. patent application Serial No.
07/844,795 entitled Equipment Security Apparatu~, assigned to the as~ignee of the present application, retaining foot members comprising synthetic rubber coated perforated metallic washer-like members are disclosed for use in conjunction with an adhesive for mounting a computer or the like to a houning in an underlying security apparatu In still other prior known security systems, equipment i9 secured to a structure using an assembly of adhesive retaining members, such as tho~e which use closed-cell foam pads, cables, padlock~ and the like.
Rubber-like retaining and other types of adhesive members which have been u~ed heretofore in 3ecurity apparatus, such a~ described above, ha~e typically comprised relatively large area closed-cell adhesive : pads, solid rubber or synthetic rubber disks, rubber or synthetic rubber coated metallic disks, a~ well a~ rubber or synthetic rubber coated perforated metallic di~ks wherein the holes are provided for improving the adherence of the rubber or synthetic rubber coating to the disk, such as disclosed in applicant' 9 above-identified U.S. patent application Serial No. 07/844,795.
It has been found that among the di~advantages of the prior known adhe~ive pads is the disadvantage that they can be easily cu~ u ing a garrote and that they typically require a large contact area in order to 212099~
provide sufficient holding force.
Among the disadvantages of the prior known rubber-like disks is the disadvantage that, while they provide a sub~tantial holding force for a relatively smaller contact area, e.g. 2 inche~ in diameter, the bond formed using customary adhesive~ for bonding the di~ks to a surface fail and/or the disk material i9 ruptured or torn apart when subjected to a relatively low magnitude of tensile force. For example, the adhesive bond using customary adhesive~ for even the strongest of the prior known rubber-like retaining members of the type which comprise a rubber-like coated metallic disk having holes for improving the adherence of the rubber-like material to the disk and having a diameter of approximately 2 inches has been found to fail and allow separation of the disk from a surface to which it is adhesively attached and/or for the rubber-like material to separate from the metallic disk under a relatively small tensile force of from 200 pounds to 400 pound~.
SUMMARY OF THE INVENTION
In view of the foregoing, a principal object of the pre~ent invention is an improved retaining member for u~e in conjunction with an adhesive which provide~ a substantial increase in holding force with no increa~e in contact area for mounting or attaching equipment and parts in a security apparatus.
In accordance -with the above-described principal object of the present invention there is provided a rubber-like retaining member comprising a relatively thin metallic core. In a preferred embodiment of the invention the metallic core has a shape compri~ing four radially extending petal~, each of the petals comprising a hole into and through which a rubber-like coating `` ' 212099~
material, such as neoprene, i8 allowed to flow during the fabrication of the retaining member. A threaded bore, -threaded in~ert or other fitting may be provided in the center of the metallic core for attaching mating fitting~
or the like to the member or for attaching the member to a housing.
Te~ts of the strength of the bond using conventional adhesives u~ed heretofore to bond prior known rubberized disk retaining members and the tensile strength of the rubber-like coating on a typical 2 inch diameter retaining member according to the present invention indicate that the application of a ten~ile force of more than 800 pounds, and in ~ome specimens more than 1000 pounds, i9 required to cause a destruction of the adhesive bond and/or a ~eparation of the rubber-like coating from the metal core or other failure of the retaining member.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantage~
of the pre~ent invention will become apparent from the following detailed description of the accompanying drawings, in which:
Fig. 1 i~ a plan view of a security retaining member in accordance with the pre~ent invention; ~;
Fig. 2 is a cross-sectional view taken in the direction of lines 2-2 of Fig. 1;
Fig. 3 is a plan view of the core of the retaining member of Figs. 1 and 2; and Fig. 4 i~ a cross-~ectional view taken in the direction of lines 4-4 of Fig. 3.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring to Figs. 1-4, there is provided in 2~209~
accordance with the pre~ent invention a security retaining member designated generally as 1 comprising a metallic core 2, as of diecast zinc, embedded in a rubber-like material 3, such as 60 durometer neoprene, which may be black in color.
The core 2 comprises a central portion 6 and a plurality of four petal-like portions 7 which extend outwardly from the central portion 6, having a centerline 90 degrees apart as shown most clearly in Fig. 3. In the center of the central portion 6 there i~ provided a threaded bore or threaded insert 8 having a diameter of approximately 0.25 inches for receiving a suitable fitting or screw for releasably attaching the retaining member to other ~ecurity apparatus, e.g. housing, cable, or the like. In each of the petal-like portions 7 there is provided a hole 9 haviny a diameter of approximately 0.25 inches. The centers of the hole~ 9 in the four petal-like portions 7 lie on a circle having a diameter of approximately 1.25 inches. The overall diameter of the member 1 including the flexible material 3 is approximately 1.90 inchee.
In fabricating the member 1, after forming the core - 2, the core 2 is embedded in the neoprene material 3 in such a manner that the neoprene material flow~ through the holes 9 ~o a~ to improve and enhance the adherence of the material 3 to the core 2.
In use, the retaining member is attached to a surface, such as the base or under surface of a computer, by mean~ of a high tensile force adhesive, such as for example, Super Bonder made by Loctite, Newington, Connecticut.
In comparison with prior known rubber-like rstaining/foot members of comparable contact area which have been used for mounting equipment or attaching part~
r ~ -~ 212~39 in security apparatus, it i~ found that the amount of ten~ile force required to break the adhesive bond between the retaining member 1 and the ~urface to which it is adhesively attached using adhesives u~ed heretofore for bonding prior known rubberized retaining member~ and/or to rupture the neoprene material or separate the neoprene material from the core 2 in the retaining member 1 is from three to four times greater than that required to break the bond and/or to rupture or separate the neoprene material from the core in prior known rubber-like foot members. This increased performance and holding force is attributed to the space between the plurality of petal-like portions which allows the neoprene in the member 1 to stretch and conform much more closely to the ~hape/
contour of the surface to which it is adhe~ively attached.
While a preferred embodiment of the present invention ie described above, it is contemplated that numerou~ modifications may be made thereto for particular applications without departing from the spirit and scope of the present invention. For example, the core 2, which in the preferred embodiment comprises a precast zinc, may be replaced by other suitable metallic or pla~tic material. Similarly, the neoprene 3 may be replaced by other suitable flexible material which can be made to adhere to another surface by means of an appropriate adhesive such a~ the above-described Super ~onder made by Loctite, Newington, Connecticut. Of course, the contact area of the member can be increased for even greater holding force. Accordingly, it i8 intended that the embodiments described be considered onIy a~ illustrative of the preqent invention and that the scope thereof should not be limited thereto but be determined by reference to the claimR hereinafter provided.
S~CURITY RETAINING MEMBER
Inventor: Donald W. Kelley BACKGROUND OF I~IE INVENTION
, Field of the Invention The pre~ent invention relates to ~ecurity apparatus in general and in particular to a ~ecurity retaining member which i~ u~ed in conjunction with an adhesive for retaining equipment and/or parts in a security apparatu~.
Deacription of the Related Art To prevent theft or unauthorized removal of equipment, ~ecurity apparatus using cable~ and/or variou~
type~ of key-operated housings in conjunction with bracket~, bolte, adhesive pads, rubberized retaining member~ with an adheqive and the like, i~ used for mounting or otherwise attaching equipment to an underlying ~urface. For example, in applicant's U.S.
Patent No. 5,135,1g7, entitled Equipment Security Method and Apparatu~, a~signed to the a~signee of the present application, there is provided a ba~e member and a cover member. The base member is attached to a vertical or horizontal surface by means of bolt~ or adhesive pads, plate~ and/or brackets a3 required in a particular in~tallation. ~ne cover member i~ removably attached to the base member by mean~ of a key operated lock. The equipment to be secured i~ attached to the cover member ~, by mean~ of U-shaped rod members, bracket members with inwardly directed fingers for engaging holee in the sides of the equipment or the like.
In U.S. Patent No. 4,739,637 entitled Locking Device for Portable Equipment, bolt~ are disclosed ~or use in mounting a typewriter or the like in a ~ecure fa~hion to an underlying hou~ing in a security apparatus.
-- 212~
.
In U.S. Patent No. 4,712,763 entitled Security Device for Office Machines, foot members comprising rubber-like diek~ are disclosed for use in conjunction with an adhesive for mounting the disks to the under~urface of an office machine or the like for subsequent attachment to a housing in an underlying security device.
In applicant~s U.S. patent application Serial No.
07/844,795 entitled Equipment Security Apparatu~, assigned to the as~ignee of the present application, retaining foot members comprising synthetic rubber coated perforated metallic washer-like members are disclosed for use in conjunction with an adhesive for mounting a computer or the like to a houning in an underlying security apparatu In still other prior known security systems, equipment i9 secured to a structure using an assembly of adhesive retaining members, such as tho~e which use closed-cell foam pads, cables, padlock~ and the like.
Rubber-like retaining and other types of adhesive members which have been u~ed heretofore in 3ecurity apparatus, such a~ described above, ha~e typically comprised relatively large area closed-cell adhesive : pads, solid rubber or synthetic rubber disks, rubber or synthetic rubber coated metallic disks, a~ well a~ rubber or synthetic rubber coated perforated metallic di~ks wherein the holes are provided for improving the adherence of the rubber or synthetic rubber coating to the disk, such as disclosed in applicant' 9 above-identified U.S. patent application Serial No. 07/844,795.
It has been found that among the di~advantages of the prior known adhe~ive pads is the disadvantage that they can be easily cu~ u ing a garrote and that they typically require a large contact area in order to 212099~
provide sufficient holding force.
Among the disadvantages of the prior known rubber-like disks is the disadvantage that, while they provide a sub~tantial holding force for a relatively smaller contact area, e.g. 2 inche~ in diameter, the bond formed using customary adhesive~ for bonding the di~ks to a surface fail and/or the disk material i9 ruptured or torn apart when subjected to a relatively low magnitude of tensile force. For example, the adhesive bond using customary adhesive~ for even the strongest of the prior known rubber-like retaining members of the type which comprise a rubber-like coated metallic disk having holes for improving the adherence of the rubber-like material to the disk and having a diameter of approximately 2 inches has been found to fail and allow separation of the disk from a surface to which it is adhesively attached and/or for the rubber-like material to separate from the metallic disk under a relatively small tensile force of from 200 pounds to 400 pound~.
SUMMARY OF THE INVENTION
In view of the foregoing, a principal object of the pre~ent invention is an improved retaining member for u~e in conjunction with an adhesive which provide~ a substantial increase in holding force with no increa~e in contact area for mounting or attaching equipment and parts in a security apparatus.
In accordance -with the above-described principal object of the present invention there is provided a rubber-like retaining member comprising a relatively thin metallic core. In a preferred embodiment of the invention the metallic core has a shape compri~ing four radially extending petal~, each of the petals comprising a hole into and through which a rubber-like coating `` ' 212099~
material, such as neoprene, i8 allowed to flow during the fabrication of the retaining member. A threaded bore, -threaded in~ert or other fitting may be provided in the center of the metallic core for attaching mating fitting~
or the like to the member or for attaching the member to a housing.
Te~ts of the strength of the bond using conventional adhesives u~ed heretofore to bond prior known rubberized disk retaining members and the tensile strength of the rubber-like coating on a typical 2 inch diameter retaining member according to the present invention indicate that the application of a ten~ile force of more than 800 pounds, and in ~ome specimens more than 1000 pounds, i9 required to cause a destruction of the adhesive bond and/or a ~eparation of the rubber-like coating from the metal core or other failure of the retaining member.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantage~
of the pre~ent invention will become apparent from the following detailed description of the accompanying drawings, in which:
Fig. 1 i~ a plan view of a security retaining member in accordance with the pre~ent invention; ~;
Fig. 2 is a cross-sectional view taken in the direction of lines 2-2 of Fig. 1;
Fig. 3 is a plan view of the core of the retaining member of Figs. 1 and 2; and Fig. 4 i~ a cross-~ectional view taken in the direction of lines 4-4 of Fig. 3.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring to Figs. 1-4, there is provided in 2~209~
accordance with the pre~ent invention a security retaining member designated generally as 1 comprising a metallic core 2, as of diecast zinc, embedded in a rubber-like material 3, such as 60 durometer neoprene, which may be black in color.
The core 2 comprises a central portion 6 and a plurality of four petal-like portions 7 which extend outwardly from the central portion 6, having a centerline 90 degrees apart as shown most clearly in Fig. 3. In the center of the central portion 6 there i~ provided a threaded bore or threaded insert 8 having a diameter of approximately 0.25 inches for receiving a suitable fitting or screw for releasably attaching the retaining member to other ~ecurity apparatus, e.g. housing, cable, or the like. In each of the petal-like portions 7 there is provided a hole 9 haviny a diameter of approximately 0.25 inches. The centers of the hole~ 9 in the four petal-like portions 7 lie on a circle having a diameter of approximately 1.25 inches. The overall diameter of the member 1 including the flexible material 3 is approximately 1.90 inchee.
In fabricating the member 1, after forming the core - 2, the core 2 is embedded in the neoprene material 3 in such a manner that the neoprene material flow~ through the holes 9 ~o a~ to improve and enhance the adherence of the material 3 to the core 2.
In use, the retaining member is attached to a surface, such as the base or under surface of a computer, by mean~ of a high tensile force adhesive, such as for example, Super Bonder made by Loctite, Newington, Connecticut.
In comparison with prior known rubber-like rstaining/foot members of comparable contact area which have been used for mounting equipment or attaching part~
r ~ -~ 212~39 in security apparatus, it i~ found that the amount of ten~ile force required to break the adhesive bond between the retaining member 1 and the ~urface to which it is adhesively attached using adhesives u~ed heretofore for bonding prior known rubberized retaining member~ and/or to rupture the neoprene material or separate the neoprene material from the core 2 in the retaining member 1 is from three to four times greater than that required to break the bond and/or to rupture or separate the neoprene material from the core in prior known rubber-like foot members. This increased performance and holding force is attributed to the space between the plurality of petal-like portions which allows the neoprene in the member 1 to stretch and conform much more closely to the ~hape/
contour of the surface to which it is adhe~ively attached.
While a preferred embodiment of the present invention ie described above, it is contemplated that numerou~ modifications may be made thereto for particular applications without departing from the spirit and scope of the present invention. For example, the core 2, which in the preferred embodiment comprises a precast zinc, may be replaced by other suitable metallic or pla~tic material. Similarly, the neoprene 3 may be replaced by other suitable flexible material which can be made to adhere to another surface by means of an appropriate adhesive such a~ the above-described Super ~onder made by Loctite, Newington, Connecticut. Of course, the contact area of the member can be increased for even greater holding force. Accordingly, it i8 intended that the embodiments described be considered onIy a~ illustrative of the preqent invention and that the scope thereof should not be limited thereto but be determined by reference to the claimR hereinafter provided.
Claims (15)
1. A security retaining member comprising:
a core having a central planar portion and a plurality of planar petal-like portions extending outwardly from and in the plane of the central portion;
and a material in which the core is embedded, said core including means for attaching said security retaining member to an article to be secured and said material including a material which can be adhesively attached to a surface.
a core having a central planar portion and a plurality of planar petal-like portions extending outwardly from and in the plane of the central portion;
and a material in which the core is embedded, said core including means for attaching said security retaining member to an article to be secured and said material including a material which can be adhesively attached to a surface.
2. A security retaining member according to claim 1 wherein said means for attaching said security retaining member to an article to be secured comprises a threaded bore centrally located within said central portion.
3. A security retaining member according to claim 1 wherein each of said petal-like portions comprises a hole through which the material in which the core is embedded is permitted to flow during the fabrication of the retaining member for enhancing the adherence of the material to the core.
4. A security retaining member according to claim 1 wherein the major dimension of the core is approximately 1.70 inches, the center of the holes in the petal-like portions lie on a circle approximately 1.25 inches in diameter and the core is approximately .12 inches thick.
5. A security retaining member according to claim 1 wherein said core comprises a metallic material.
6. A security retaining member according to claim 5 wherein said metallic material comprises diecast zinc.
7. A security retaining member according to claim 1 wherein said material comprises neoprene.
8. A security retaining member according to claim 7 wherein said neoprene comprises 60 durometer neoprene.
9. A security retaining member according to claim 1 wherein said petal-like portions comprise four petal-like portions having a centerline 90 degrees apart.
10. A method of making a security retaining member comprising the steps of:
forming a core having a central planar portion and a plurality of petal-like planar portions extending outwardly from and in the plane of the central portion, said step of forming said core including the step of providing a means for attaching said core to an article to be secured; and embedding said core in a material which can be adhesively attached to another article.
forming a core having a central planar portion and a plurality of petal-like planar portions extending outwardly from and in the plane of the central portion, said step of forming said core including the step of providing a means for attaching said core to an article to be secured; and embedding said core in a material which can be adhesively attached to another article.
11. A method according to claim 10 wherein said step of providing a means for attaching said core to an article to be secured comprises the step of providing a threaded bore centrally located within said central portion.
12. A method according to claim 10 wherein said step of forming said core comprises the step of providing a hole in each of said petal-like portions for receiving said material.
13. A method according to claim 10 wherein said step of embedding said core comprises the step of embedding said core in neoprene.
14. A security retaining member comprising:
a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion; and a material in which the core is embedded, wherein each of said petal-like portions comprises a hole through which the material in which the core is embedded is permitted to flow during the fabrication of the retaining member for enhancing the adherence of the material to the core, said core including means for attaching said security retaining member to an article to be secured and said material including a material which can be adhesively attached to a surface.
a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion; and a material in which the core is embedded, wherein each of said petal-like portions comprises a hole through which the material in which the core is embedded is permitted to flow during the fabrication of the retaining member for enhancing the adherence of the material to the core, said core including means for attaching said security retaining member to an article to be secured and said material including a material which can be adhesively attached to a surface.
15. A method of making a security retaining member comprising the steps of:
forming a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion, said step of forming a core including the step of providing a means for attaching said core to an article to be secured; and embedding said core in a material which can be adhesively attached to a surface wherein said step of forming said core comprises the step of providing a hole in each of said petal-like portions for receiving said material.
forming a core having a central portion and a plurality of petal-like portions extending outwardly from the central portion, said step of forming a core including the step of providing a means for attaching said core to an article to be secured; and embedding said core in a material which can be adhesively attached to a surface wherein said step of forming said core comprises the step of providing a hole in each of said petal-like portions for receiving said material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002120995A CA2120995A1 (en) | 1994-04-11 | 1994-04-11 | Security retaining member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002120995A CA2120995A1 (en) | 1994-04-11 | 1994-04-11 | Security retaining member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2120995A1 true CA2120995A1 (en) | 1995-10-12 |
Family
ID=4153355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002120995A Abandoned CA2120995A1 (en) | 1994-04-11 | 1994-04-11 | Security retaining member |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2120995A1 (en) |
-
1994
- 1994-04-11 CA CA002120995A patent/CA2120995A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |