This invention relates generally to retaining devices and, more particularly to a tie for securing one or more objects such as cables, wires or conduits in a bundle or to another object.
Existing cable ties take several forms. The most elementary example is a wire which is either bare or is coated with insulation and which is twisted around one or more cables which it is desired to bundle together. A more popular cable tie which is now used is a preformed plastic strip having teeth which pass through a catch box, where the teeth engage a complemental restraint which locks the end of the tie in place.
The disadvantages of the prior art devices described above are several, First, and foremost, with many types of cable, especially low voltage computer cables, the cable is sensitive to binding and it is frequently the case that the cable tie is tightened too tightly so that it adversely affects the performance of the equipment being fed by the cable. If an uncoated wire is utilized as the tie, significant damage to the cable or cables being secured may result.
Flexible conduits such as hoses and tubing are similarly sensitive to binding. Their lumens may become narrowed or partially occluded if a cable tie is overtightened, diminishing the rate of flow of liquids or gases carried by the conduits.
Another disadvantage of the prior art, even when utilizing the more popular plastic cable ties described above, is that there is no way to judge when the tie is properly secured. Since there is no margin for error, the tie may be too tight and may adversely affect performance without the knowledge of the installer who applied the tie.
Another disadvantage of prior art ties is that for the most part, once they are tightened, they cannot be released without use of a cutting tool, which destroys the tie.
Another disadvantage of prior art ties is that, even when installed properly so as not to bind the cable during normal use, if the cable is bent around a corner there is the possibility of the cable becoming pinched and adversely affected, even though this was not the case when the cable was laid out in a straight line.
Still another disadvantage of prior art tie constructions is that for the most part they require two hands to bring the cable tie around the cable and secure it to other cables in the bundle or to another object.
The present invention overcomes the disadvantages of the prior art by providing a preformed cable tie which has a unique, non-binding configuration, which has a partially deformable inner surface and which can be secured using one hand to bring inter-engaging surfaces together. The device can also be secured in varying circumferences but with an outward spring force which is less likely to damage the cable than the “cinching action” of the prior art devices.
In one embodiment, the invention comprises an elongated band having a tail end and a head end. The band is formed in an arcuate configuration from a material having shape-retaining memory properties. Because of its shape-retaining memory properties, the band may be deformed under force and, when the force is released, it will return to its approximate original shape. There are a plurality of first locking elements which extend around the surface of the band and a plurality of second locking elements which complementally engage the first locking elements and extend around the outer surface of the band. This combination provides a band which may be compressed with one hand to form an opening to receive a plurality of cables and when the hand is released, the locking elements engage to retain the cables within the band.
The invention also encompasses a method of holding a plurality of small diameter elongated objects in a bundled configuration which comprises providing an elongaged band formed in a generally arcuate configuration from a material having shape-retaining properties. The band is constructed so that when it is deformed under force and released it will return to its approximate original shape. The method further comprises deforming the band with one hand to provide an opening for insertion of a bundle of elongated objects within the band, placing the bundle of elongated objects within the band, and then releasing the band to allow it to return to its approximate original shape. Finally, the method of the invention includes securing the two ends of the band together to hold the band in the referenced shape.
A cable retention system of the present invention includes a cable tie device and a storage and installation tool. The cable tie device includes an elongated band having a head end and a tail end. A plurality of spaced grooves are formed along a portion of the inner surface of the band and are offset toward the tail end to render the tail end relatively more flexible than the head end. A plurality of teeth are positioned along the inner surface of the band adjacent the head end and along the outer surface of the band adjacent the tail end. The teeth are configured for releasable mutual engagement in a circumferential direction when the head end overlaps the tail end.
The storage and installation tool has a tubular or partially tubular configuration with an elongated longitudinal opening and a convex inner surface defining a raceway for receiving cables. A plurality of cable tie devices are positioned on the tool in side-by-side relation. The opening enables the tube to be slipped over a group of cables and moved along the cables. As the tube is moved along the cables, the ties are slipped off the tube and onto the cables at selected spaced locations and squeezed for securing the cables into a bundle.
It is therefore an object of the present invention to provide a cable tie which is less likely to bind the cable or cables being secured as a result of both a unique locking mechanism and a surface construction which will be somewhat yielding to the pressure of the cable against it.
Another objective of this invention is to provide a cable tie which can be operated by one hand to bring one or more cables into a bundled configuration.
As a corollary of the foregoing object, one of the aims of this invention is to provide a cable tie which has a spring memory so that it will move in the direction of an engaged locking position once the cables to be retained are inside of it, but will yield to the cable to present an opening as the cable is being inserted.
An important aim of this invention is to provide a cable tie which provides a margin of error against being tightened too tight, the margin of error being in the form of an inner surface which is somewhat yielding and therefore avoids binding the cable even if tightened beyond what is necessary.
Another aim of this invention is to provide a cable tie which, if necessary, can be released by disengaging the locking mechanism without the need to destroy the tie with a cutting tool.
Still another one of the objects of the invention is to provide a cable tie which provides for a “sure lock” in the form of inter-engaging teeth to ensure that the tie will not come undone.
Still another object of this invention is to provide a cable tie which provides for positive engagement of the locking mechanism which can be felt by the user of the device so that he or she will know positive engagement has been obtained.
An important aim of the invention is to provide a cable tie which secures a bundle of cables with a positive outwardly directed “spring action” rather than an inwardly directed cinching action.
Various objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings wherein are set forth, by way of illustration and example, certain embodiments of this invention.
The drawings including
As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
Referring initially to
The construction of annular support 12 is further defined by a honeycomb structure comprising a plurality of spaced apart cross members 24 and a relatively flat planar section 26 (
Disposed on the inner surface of convex inner face 14 are a plurality of teeth 32 the configuration of which is best shown in
Complemental teeth 38 are formed along the outer surface of the second annular portion of support 12 as it approaches terminal end 16. Teeth 38 are presented by curvilinear surface 40, which mates with surface 34 and projection 42, which mates with groove 36.
A plurality of cables 44, 46 and 48 are shown in
It will be appreciated that the honeycomb construction of annular support 12 provides a degree of resiliency and flexibility to inner face 14 to provide further insurance against the cables being pinched and damaged even if the degree of closure of tie 10 is excessive.
Referring to
A cable retention system in accordance with the invention is generally designated by the reference numeral 210 and is depicted in
As best shown in
The band 218 may be constructed of any flexible, shape-retaining material such as a synthetic resin, rubber, metal, fibrous or other material configured to place the ends 220 and 222 in spaced proximate relationship. The band 218 has a generally uniform thickness, except where there are projecting teeth 232 and 234. In order to impart increased flexibility to the tail end portion of the band, an area of the inner surface 226 of the band 218 is equipped with a series of circumferentially spaced axial or transverse grooves or slots 236, shown in
While the slots 236 are depicted in
In use, the cable bundler or tie 214 is grasped between a thumb and finger of one hand of a user as generally shown in
The user next positions the tie 214 so that the opening between the ends 220 and 222 is adjacent the cables 212 to be bundled (
Once the cables are encircled by the band 218 as shown in
A user may unclasp the tie 214 for removal or to add additional cables 212 by squeezing as previously described to release the engaged teeth 232 and 234. Once the teeth are disengaged, the user releases pressure and permits the tail end 222 to slide away from the head end 220 to form an opening between the ends. Additional cables 212 may be added by urging the cables against the opening and, once the cables are encircled within the tie device 214, again squeezing to engage the ratchet and pawl teeth 234 and 232 to lock the device. If the tie is to be removed, once unclasped it can be rotated and easily pulled away from the cables for further reuse. Advantageously, the tie device may be installed, adjusted, released for addition of cables or removed entirely by a user in an entirely one-handed operation.
The cable retention system 210 also includes a storage and installation tool generally designated by the reference numeral 216 and designed for use in association with the one handed cable tie device 214 as depicted in
The sleeve 238 has a generally convex outer surface 248 and a generally concave inner surface 250, defining a raceway 252 for receiving a plurality of cables 212. The edges 243 of the slot 244 are flared or curled outwardly and partially rolled over to form a pair of flanges or lips 254, thereby defining a somewhat omega-shaped cross section. Each lip 254 cooperates with the convex outer surface 248 to form an exterior channel for receiving the ends 220 and 222 of the cable ties 214, and function as stops to prevent the ties 214 from sliding circumferentially about the tool 216. The illustrated convex outer surface 248 adjacent one of the lips 254 is relieved to form an indent, channel or groove 256 sized to receive the cable tie inner teeth 232 adjacent the head ends 220 when the cable ties 214 are mounted on the tool. The tool 216 also includes a pair of apertures 258 adjacent each of the ends 240 and 242 for transport or storage using a hanger such as a nail, peg, hook, loop or any other suitable means.
The tool 216 may be constructed of any suitable synthetic resin, metal or fibrous material that has shape-retaining characteristics yet is flexible. The outer surface 248 should be sufficiently smooth to permit sliding passage of the cable ties 214 and the groove 256 should be sufficiently deep to permit reception of the pawl teeth 232 and sliding passage of the teeth therealong. The tool 216 may be constructed in a variety of lengths, with shorter lengths being more suitable for tight spaces, and longer lengths being more suitable for long runs of cable. The diameter of the tool 216 is sized for reception of a plurality of cable ties 214 of a size that is preselected to correspond to the number and diameters of the cables 212 to be bundled. The lips 254 and rims 246 are proportioned to the diameter so that they function to retain stored cable ties 214 in place on the tool 216 while permitting them to be easily pushed off the ends 240 and 242 during use.
While the cable ties 214 and tools 216 are each are depicted as having a generally open, annular configuration, those skilled in the art will appreciate that cable tie devices and tools in accordance with the present invention may be constructed to form any suitable closed geometric configuration once fastened, including oblong and multilateral configurations and that any cable tie configuration having a pair of open ends is within the scope of this invention.
In use, a supply of cable ties 214 may be preloaded on the tool 216 in side-by-side relation for storage and use as needed. The tool 216 may be loaded from either or both ends 240 and/or 242 with a plurality of cable ties 214 by sliding the ties over one of the rims 246 (
In a method of use, a user first positions the loaded tool 216 with the slot 244 aligned generally parallel to and facing a plurality of adjacent cables 212 to be bundled. The user next urges the slot 244 against the cables 212, which slide easily past the rolled lips 254 and into the interior raceway 252. The tool 216 is thus positioned in surrounding and gathering relation to a bundle of cables 212. The user next slides the tool 216 in a relatively forward direction along the length of the cable bundle until it is desirable to secure the bundle with a tie 214. The construction and manner of use of the tool 216 cooperatively serve to preposition and orient the stored cable ties 214 over a bundle of cables for convenient access and installation at selected locations along the cables 212.
The user then slides a cable tie 214 in a relatively rearward direction along the outer surface 248 of the sleeve 238 and slips it over the rim 246 and off the rearward end 242 of the tool 216. The user fastens the tie 214 using one hand as previously described. This can be accomplished while the user continues to shift the sleeve 238 forwardly, along the length of the cable bundle 212. When the supply of ties 214 is exhausted, the tool 216 may be removed by urging the sleeve 238 away from the cables until they slide out of the slot 244, and a new, fully loaded tool 216 may be installed as previously described.
In this manner, a supply of cable ties 214 may be shifted forwardly along the length of a run of cables 212, and the ties may be dropped off the rearward end 242 of the tool at preselected, spaced intervals and fastened using one hand, while the tool 234 is shifted forwardly using the other hand.
It is to be understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangement of parts described and shown.
This application is a continuation-in-part of U.S. patent application Ser. No. 10/359,867 entitled CABLE RETENTION DEVICE filed Feb. 7, 2003, which is based on Provisional Application Ser. No. 60/333,255,430 entitled CABLE RETENTION DEVICE filed on Feb. 8, 2002.
Number | Date | Country | |
---|---|---|---|
60355430 | Feb 2002 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 10359867 | Feb 2003 | US |
Child | 11496696 | Jul 2006 | US |