Montag, 30. Januar 2012

The Secret Anchor

Geschrieben von Stefan
There were many questions and rumors about our slackline anchor Revolve, used in our June 2010 300m+ longline.
Recent developments in the slackline community consider us to lift the white scarf. Back in time we were right in the finalization step of the first Dyneema webbing, which was exclusively developed for the slackline sport - our Aeon. The special behaviour of Dyneema and the very high loads of future longline projects led us to the conclusion to invent a new webbing anchor design. The specs of the new anchor should fulfill the following points:
  • maximum main roller for nearly 0% strength reduction of the webbing
  • different modes of anchor friction by winding the webbing on the core
  • moderate size and lightweight design
  • valuable manufacturing process

The new clamping principle was born and was called due to its visual design - Revolve (looking like a Revolver, and you have to revolve the webbing around the inner core with diameter of 60mm). The weight of the Revolve was around 1kg (completely machined of stainless steel).
blog-2012-01-30-revolve-01The Revolve was designed to both positions in a longline setup. The front position at our 9:1 Base System including the special interface for our AFC force measuring device.
blog-2012-01-30-revolve-03The second position mode is on the fixed site directly at the tree, therefore a direct interface to a big shackle was designed.
blog-2012-01-30-revolve-02The Revolve anchor was tested at a mechanical lab. We tested 2 friction modes. At the first one (visible in the picture below) the Aeon slipped at around 12 kN. At the second mode (winded one more time) the translation way of the machine was over at 56kN. Webbing and metalic structure were still intact.
blog-2012-01-30-revolve-04This gave us enough confidence to use the new anchor in the 300m/1000feet project. The maximum tension in field achived with the Revolve were at the 307m longline, the first slackline ever rigged and walked beyond 300m/1000feet, were around 27kN.
blog-2012-01-30-revolve-05
blog-2012-01-30-revolve-06blog-2012-01-30-revolve-07There were plans to modify and optimize the first Revolve design (for example using Al7075 instead of steel), but as our time budget became smaller and smaller (Stefan became father, Damian foughts with his studies), other things were priorized.... The Revolve falls into oblivion.

Perhaps we will work on the birth of the Revolve 2.0 if there is more time and/or the longline community gives us a sign for demand....

8 Kommentar(e)

  • Kommentar hinzufügen pete_fg Sonntag, 19. Februar 2012 Eingetragen von pete_fg

    an other example how the prospect of money kills the spirit.

    keep on slacking

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  • Kommentar hinzufügen Andy Riedrich Mittwoch, 08. Februar 2012 Eingetragen von Andy Riedrich

    yes, i am very well aware of us patent laws due to our worldwide lineGrip patent.
    nevertheless none of the exclusion sections apply, most importantly afaik it has never been used in the us before, it has not been described in a printed publication and the inital inventor can not be pinpointed (after all jerry sent me pics of his first prototypes in summer 2010)... or can you find any applicable cases? if so, please quote.

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  • Kommentar hinzufügen Stefan-LC Dienstag, 07. Februar 2012 Eingetragen von Stefan-LC

    Besides that we don´t have any interest in copying, bashing and fighting silly rivalry to someone other - specially not in the longline/highline community - we are in (private) dialog with Jerry.

    Andy please consider following if you don´t know it yet. There are differences between US and EU/German Patent law:

    http://www.uspto.gov/web/offices/pac/mpep/documents/appxl_35_U_S_C_102.htm

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  • Kommentar hinzufügen Andy Riedrich Sonntag, 05. Februar 2012 Eingetragen von Andy Riedrich

    jerry, that someone publishes an article like this, right after a patent was filed by someone else is totally irrelevant! who thought of it first is just as irrelevant. hey, maybe you thought of it before it even came to their mind, who knows! the only fact that counts is the time of patent filing or the time of publication of functionality and specs, if that occured before the filing - which it didn't. period!

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  • Kommentar hinzufügen Doc Slack Dienstag, 31. Januar 2012 Eingetragen von Doc Slack

    Tolle Sache! Zeigt einmal mehr eure Kreativität und Kompetenz in Sachen Slackline-Hardware.

    Weiter so! Bin gespannt auf mehr :)

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  • Kommentar hinzufügen Linerider Dienstag, 31. Januar 2012 Eingetragen von Linerider

    Some persons mark articles sold with the terms "Patent Applied For" or "Patent Pending". These phrases have no legal effect, but only give information that an application for patent has been filed in the Patent and Trademark Office. The protection afforded by a patent does not start until the actual grant of the patent. (Wikipedia)
    Can't see any violation here...

    interesting stuff... thx for sharing the former strictly confidential pics

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  • Kommentar hinzufügen Stefan-LC Dienstag, 31. Januar 2012 Eingetragen von Stefan-LC

    This information here is just for the case - the Revolve and its webbing anchor principle even existed 2 years back (maybe before you even think of such an idea to create your lock?).
    There are alot of attestors and there is evidence that this principle worked in June 2010. Please view the video of Damians walk goto 12min - what anchor is there?-you might have seen this... - the video is online since June 2010.

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  • Kommentar hinzufügen Jerry Miszewski Dienstag, 31. Januar 2012 Eingetragen von Jerry Miszewski

    Lovely design. However, this is a violation of the patent pending for the MONSTER Lock. I would love to work with you guys on improving this device but you cannot simply come out with a product right after I develop and patent a device that works on the same principal.

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