1. Field of the Invention
This invention relates to security systems and, more particularly, to a security system having a lasso made from a flexible cord for surrounding a portion of an object to be monitored. The invention is also directed to a method of securing an object using a lasso.
2. Background Art
Myriad systems are currently available for securing objects, as at point-of-purchase displays. One such system incorporates a flexible cord that is formed into a lasso which either extends around or through an object to be monitored. Examples of such lasso arrangements are shown in each of U.S. Pat. Nos. 5,154,072 and 5,279,135, commonly assigned herewith. Such a lasso arrangement is shown also in
More particularly, as shown in
The crimp connector 20 has the shape of an open
The crimp connector 20 has a number of inherent drawbacks. First of all, the separate ends 24, 28 of the flexible cord 10 must be threaded through the openings 30, 32. Generally, the diameter of the flexible cord 10 is closely received in the openings 30, 32 so that the flexible cord 10 and crimp connector 20 can be positively united without requiring excessive deformation of the crimp connector 20. The flexible cord 10 may bind as it is directed through the openings 30, 32, particularly if there is any irregularity in the diameter of the flexible cord 10, as may occur in the event that the flexible cord 10 is bent.
It is common for this type of flexible cord 10 to have a braided metal core 34 with a surrounding non-metallic sheath 36. The tenacity of the connection between the crimp connector 20 and flexible cord 10 is maximized by locally stripping the flexible sheath 36 and deforming the crimp connector 20 around the exposed, braided core. The manufacturer or installer has to strategically strip the sheath 36 to expose the core 34 so as to allow the selected desired location, and a predetermined fixed effective diameter, of the closed first loop 22, to be established. Thus, each flexible cord 10 may have to be customized to a particular application. Alternatively, the crimp connector 20 can be formed against the outer sheath, which could potentially detrimentally compromise the strength of the connection between the crimp connector 20 and flexible cord 10.
Designers in the security industry are constantly seeking ways to construct systems, including lassos as a part thereof, which can be made economically while not compromising effectiveness. Costs may be saved by making this type of lasso universal in nature as opposed to requiring a customized configuration for each application.
In one form, the invention is directed to a lasso for securing an object to be monitored. The lasso has a flexible cord with a length and first and second free ends, and a connector having a body with at least one opening therethrough. The portion of the flexible cord between the first and second free ends is directed through the at least one opening so that the connector and the portion of the flexible cord define a closed first loop with an effective diameter. The portion of the flexible cord is configurable to be generally U-shaped with a base and first and second legs which each project through the at least one opening. At least one of the first and second legs is movable relative to the fitting so that the effective diameter of the closed first loop is variable. The first free end of the flexible cord is directed through the closed first loop so as to define a closed second loop with an effective diameter that is variable by selectively oppositely moving the flexible cord through the closed first loop.
In one form, the first free end of the flexible cord is attached to a fixed support.
The second free end of the flexible cord may be provided with an enlargement thereon which cannot be drawn through the at least one opening in the connector to open the closed first loop.
In one form, the enlargement is defined by a separate element that is fixedly attached to the flexible cord.
In one form, the separate element is crimped to the flexible cord.
In one form, the body of the connector has a flat plate through which the at least one opening is formed.
In one form, the at least one opening is a single opening within which the first and second legs reside.
The single opening may have an elongate shape.
The flexible cord may be a braided cable.
The braided cable may be surrounded by a non-metal sheath.
In one form, the flexible cord has an electrical conductor that defines a conductive path between the first and second free ends of the flexible cord.
The lasso may be provided in combination with an alarm system capable of producing a detectable signal in the event that the conductive path between the first and second free ends of the flexible cord is interrupted.
The lasso may be provided in combination with a support to which the first free end of the flexible cord is secured.
The lasso may also be provided in combination with an object having a fully surrounded opening. The portion of the flexible cord extends through the fully surrounded opening.
The invention is further directed to a lasso for securing an object to be monitored and having a flexible cord with a length and first and second free ends and a connector having a body with at least one opening therethrough. The portion of the flexible cord between the first and second free ends is directed through the at least one opening so that the connector and the portion of the flexible cord define a closed first loop with an effective diameter. The portion of the flexible cord is configurable to be generally U-shaped with a base and first and second legs which each project through the at least one opening. The first and second legs are each movable relative to the connector so that the effective diameter of the closed first loop is variable. The first end of the flexible cord is directed through the closed first loop so as to define a closed second loop with an effective diameter that is variable by selectively oppositely moving the flexible cord through the closed first loop.
In one form, the second free end of the flexible cord has an enlargement thereon which cannot be drawn through the at least one opening on the connector to open the closed first loop.
In one form, the flexible cord is in the form of an electrical conductor that defines a conductive path between the first and second free ends of the flexible cord.
The lasso may be provided in combination with an alarm system capable of producing a detectable signal in the event that the conductive path between the first and second free ends of the flexible cord is interrupted.
The lasso may be provided in combination with a fixed support to which the first free end of the flexible cord is secured.
In one form, the lasso is provided in combination with an object having a fully surrounded opening, with the portion of the flexible cord extending through the fully surrounded opening.
The invention is further directed to a method of securing an object to be monitored. The method includes the steps of: providing a flexible cord having a length and first and second free ends; providing a connector having at least one opening therethrough; directing a portion of the flexible cord between the first and second ends through the at least one opening so that the connector and the portion of the flexible cord define a closed first loop with a variable diameter; directing the first free end of the flexible cord around at least a part of an object and through the closed first loop to lasso the part of the object; and securing the first free end of the flexible cord to the support after the first free end of the flexible cord is directed through the closed first loop.
In one form, a portion of the flexible cord has a U shape with a base and first and second legs and the step of directing the portion of the flexible cord through the at least one opening involves pre-forming the portion of the flexible cord into the U shape and directing the pre-formed portion of the flexible cord base first through the at least one opening.
The method may further include the step of securing an element to the flexible cord that cannot be withdrawn from the at least one opening to open the closed first loop.
In one form, the step of providing a connector may involve providing a connector with a single opening through which the first and second legs of the flexible cord extend.
In one form, the step of providing a connector involves providing a flat element with a single opening therein to accept the portion of the flexible cord.
The method may further include the step of connecting the flexible cord to an alarm system capable of producing a detectable signal in the event that the flexible cord is severed between the first and second ends.
One preferred form of the invention is shown in
The flexible cord 42 is joined with the connector 44 by configuring a portion of the flexible cord at 58 into a U shape, as seen particularly in FIG. 7. The preformed U-shaped consists of a base 60 and spaced first and second legs 62, 64. The U-shaped portion 58 is directed through an opening 66 in the connector 44. The opening 66 is elongate with a length L1 and a width W. The length L1 and width W are chosen to accommodate the U-shaped portion 58, configured as in FIG. 7. That is, the width W is made slightly greater than the outer diameter D1 (
The connector 44 is shown to have a flat body 68 with an outer, elliptical edge 70. The configuration of the edge 70 is not important and is made elliptical to correspond generally to the shape of the opening 66, so as to define a compact overall design. The flat construction of the body 68 facilitates construction of the connector 44 by a simple stamping operation using metal sheet stock. Preferably, the metal has a sufficient thickness T (
The connector 44 can take virtually any shape that lends itself to the formation of a suitable opening to accept the flexible cord portion 58. Likewise, the body 68 an be made from any metal or non-metal material which facilitates formation by any method, i.e. casting molding, known to those skilled in the art.
Once the pre-formed U-shaped portion 58 is directed, base first, through the opening 66, a shown in
Once the closed first loop 72 is formed, the first free end 46 of the flexible cord 42 can be directed therethrough to define a closed second loop 74 having a diameter that is likewise variable by moving the flexible cord strategically oppositely within the closed first loop 72.
To prevent withdrawal of the first leg 62 from the opening 66, an enlargement 76 is formed at the second free end 48 of the flexible cord 42. The enlargement 76 is dimensioned so that it will not pass through the opening 66 as might otherwise allow the closed first loop 72 to be opened and thereby the system to be compromised. The enlargement 76 may be a conventional crimp connector that can be conventionally secured at the free end 48 of the flexible cord 42. As shown in
It should be understood that while the flexible cord 42 has been described, and will be described below, with free ends 46, 48 which cooperate with various structures, it is not critical that any of those structures cooperate at the free ends 46, 48. For example, as shown in
In
In
In
In
A still further form of the invention is shown in
A modified form of connector, according to the present invention, is shown at 44′ in
In
In this embodiment, the rods 132, 134 are shown to be pressed through each of the end caps 128, 130 so as to be flush with the oppositely facing, end surfaces 142, 144 thereon. The rods 132, 134 can be conventionally press fit into, and frictionally held within, the end caps 128, 130. Alternatively, an adhesive or welds can be used to maintain the connection between the end caps 128, 130 and the rods 132, 134. The rods 132, 134 can be made from steel, and may be hardened for additional security. The connector 44″ functions in the same manner as the connectors 44, 44′, previously described.
In
The connector 98′ has a housing 150 defined by joinable halves 152, 154 which, when connected using a fastener 156, define a closed space 158. At least one, and in this case four, slots 160 are provided on the housing half 154, which is connected to the support 96. The slots 160 each have a width W that is sufficient to loosely accept the diameter of the flexible cord 42, but will not allow the connector 146 to pass therethrough.
With this construction, the housing halves 152, 154 can be separated by loosening the fastener 156. Thereafter, the connector 146 can be directed into the housing space 158, after which the housing half 152 can be joined to the housing half 154 so as to close the slot 16 in which the flexible cord 42 is placed. The connector 146 within the space 158 cannot move through the associated slot 160 and thus separation of the flexible cord end 46 from the housing 150 is precluded. A like connection can be made at the other slots 160.
The foregoing disclosure of specific embodiments is intended to be illustrative of the broad concepts comprehended by the invention.
Number | Name | Date | Kind |
---|---|---|---|
4132987 | Devereaux | Jan 1979 | A |
4746909 | Israel et al. | May 1988 | A |
4985695 | Wilkinson et al. | Jan 1991 | A |
5020192 | Gerlach | Jun 1991 | A |
5154072 | Leyden | Oct 1992 | A |
5167245 | Harriett | Dec 1992 | A |
D345092 | Leyden et al. | Mar 1994 | S |
5561417 | Rothbaum et al. | Oct 1996 | A |
Number | Date | Country | |
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20050040948 A1 | Feb 2005 | US |