Page 1

Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


STOP THIS!

WITH THIS!

Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


The RR-1

Installation of the R-1 (or any other Doorzipper model for that matter) requires the upgrading of the door hinges to three inch stainless steel screws lest they become the weakest points on the door!

Copyright Š 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


Simple, Effective, the best locking system available … Period!

Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


FIELD TESTED … TOUGH! This steel coated door equipped with Doorzipper model R-2 was beaten by two men using a 70lb battering ram for over five minutes! Not only did the door not fail … but the deadbolt still operates smoothly!!

BEFORE ..

AFTER .. Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


LAB TESTED … TOUGH! Exterior Access Door Force Resistance Test

Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.


UNDER REPETITIVE PREDICTABLE FORCE … NO LOCK STANDS THE TEST LIKE DOORZIPPER!!

Height (m) 5.25 4.92 4.59 4.26 3.94 3.61 3.28 2.95 2.62 2.30 1.97 1.64 1.31 0.98 0.66 0.33 0.00

(ft) 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Height y_0 Feet 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Time t_1 Seconds 0 0.25 0.35 0.43 0.50 0.56 0.61 0.66 0.70 0.75 0.79 0.83 0.86 0.90 0.93 0.97 1.00

Velocity (ft/s) 0 8.02 11.35 13.90 16.05 17.94 19.66 21.23 22.70 24.07 25.38 26.62 27.80 28.93 30.03 31.08 32.10

(m/s) 0 2.44 3.45 4.23 4.88 5.46 5.98 6.46 6.91 7.33 7.72 8.10 8.46 8.81 9.14 9.46 9.77

Kinetic Energy Joules ft*lb 0 0 136 100 271 200 407 300 542 400 678 500 813 600 949 700 1084 800 1220 900 1356 1000 1491 1100 1627 1200 1762 1300 1898 1400 2033 1500 2169 1600

With 24 locking stainless steel tabs absorbing and distributing the force … each tab bears a mere 66.75 ft/lbs of energy … hardly enough to push through even the lowest grade door!! Copyright © 2009 KJD Services LLC. All Rights Reserved} - Doorzipper ™ is Patent Pending and a Trademark of KJD Services LLC. All Rights Reserved.

Doorzipper Slideshow  

A brief overview of The Doorzipper and how it works.

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