Browse Prior Art Database

STAGGERED PAWL TIE WRAP

IP.com Disclosure Number: IPCOM000007997D
Original Publication Date: 1997-Mar-01
Included in the Prior Art Database: 2002-May-10
Document File: 2 page(s) / 97K

Publishing Venue

Motorola

Related People

Jeffrey Petsinger: AUTHOR [+2]

Abstract

The basic nylon Tie Wrap is widely used in the electronics and mechanical industries and is avail- able in many forms from short to long and very nar- row to wide. It is a simple piece of hardware, typi- cally molded from nylon, designed to peripherally clamp things together. It is comprised of a band with perpendicular grooves which mates into a con- finement head containing a paw1 that locks into the grooves. The paw1 is a hinged extremity that allows the passage of the grooved band in one direction, however restricting it movement in the opposite. In most applications, the amount of tightness and hold- ing reliability is not very crucial. However, one draw back with conventional Tie Wraps is the abili- ty to use them in more critical applications such as in the medical industry, aircraft industry or in an application where a similar latching concept gets reconfigured into a mechanical latching device. Our idea originated during the development of a preci- sion latching device. A problem can occur when the resolution of the grooves on the tie wrap band do not have a fine enough resolution. Typically you tighten a cable tie to a moderate tightness and the Paw1 locks into the last groove that it can fully engage. Should you need a tighter containment, advancing to the next groove could over stress the nylon to breakage or just near breakage which cur- tails reliability. This suggests the need for a device that has greater variability. The special need for this extra accuracy without sacrificing strength can be achieved easily by reconfiguring the standard tie wrap with the Staggered Paw1 concept.

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MOTOROLA Technical Developments

STAGGERED PAWL TIE WRAP

by Jeffrey Petsinger and Gregory Bujalski

  The basic nylon Tie Wrap is widely used in the electronics and mechanical industries and is avail- able in many forms from short to long and very nar- row to wide. It is a simple piece of hardware, typi- cally molded from nylon, designed to peripherally clamp things together. It is comprised of a band with perpendicular grooves which mates into a con- finement head containing a paw1 that locks into the grooves. The paw1 is a hinged extremity that allows the passage of the grooved band in one direction, however restricting it movement in the opposite. In most applications, the amount of tightness and hold- ing reliability is not very crucial. However, one draw back with conventional Tie Wraps is the abili- ty to use them in more critical applications such as in the medical industry, aircraft industry or in an application where a similar latching concept gets reconfigured into a mechanical latching device. Our idea originated during the development of a preci- sion latching device. A problem can occur when the resolution of the grooves on the tie wrap band do not have a fine enough resolution. Typically you tighten a cable tie to a moderate tightness and the Paw1 locks into the last groove that it can fully engage. Should you need a tighter containment, advancing to the next groove could over stress the nylon to breakage or just near breakage which cur- tails reliability. This suggests the need for a device that has greater variability. The special need for this extra accuracy without sacrificing strength can be achieved easily by reconfiguring the standard tie wrap with the Staggered Paw1 concept.

The Staggered Paw1 concept retains similar latching principles to the conventional tie wrap. It...