IANAL, But as far as I know, the only part of a patent that *really* matters is the claims. So even though the description seems obvious, the claims might say something like: where the insulator is made of pure unobtainium. That might be non-obvious.
Ken On 6/27/2013 3:53 PM, Charles Buckley wrote: > Well, yes, I would expect that to be the case. > > http://www.google.com/patents/US6722872 > > "Disclosed is a three-dimensional modeling apparatus (*10*) that builds up > three-dimensional objects in a heated build chamber (*24*) by dispensing > modeling material from a dispensing head (*14*) onto a base (*16*) in a > pattern determined by control signals from a controller (*140*). The motion > control components (*18, 20*) of the apparatus (*10*) are external to and > thermally isolated from the build chamber (*24*). A deformable thermal > insulator (*132*) forms a ceiling of the building chamber, allowing motion > control of the dispensing head (*14*) in an x, y plane by an x-y gantry (*18 > *) located outside of and insulated from the build chamber (*24*). In the > preferred embodiment, a material dispensing outlet (*66*) of the dispensing > head is inside the chamber. Thermal isolation of the motion control > components from the build chamber allows the chamber to be maintained at a > high temperature." > > I am still trying to determine what part of that meets the "not obvious to > someone versed in the field" that was part of the law creating the patent > system, but its the world we live in now.. > > That particular patent is good until Apr 20, 2021 > > > > On Thu, Jun 27, 2013 at 1:01 PM, Gene Heskett <[email protected]> wrote: > >> On Thursday 27 June 2013 14:59:37 Charles Buckley did opine: >> >>> Well, on January 28th, 2014 the next generation of stereolithography >>> patents expire. That will increase the resolution a ridiculous amount. >> Interesting, until some troll crawls out of the swamp. Are there any other >> gotchas that will fall through to, to bite the unwary? >> >>> Linuxcnc is a much more adaptable baseline for any of these machines. I >>> would expect to see a lot of UI changes and movement with it. >>> >>> On Thu, Jun 27, 2013 at 10:49 AM, Bari <[email protected]> wrote: >>>> I agree with you. When the GGG (Glorified Glue Gun) fad started a few >>>> years ago many of the maker folk looked at Linuxcnc since it had been >>>> used to control multi-axis machines for over a decade. Some of them >>>> felt that it was too complicated and expensive to control their GGG >>>> made mostly of threaded rods, nuts and low resolution PLA printed >>>> parts. They then decided to just use an Arduino and make some custom >>>> IO stepper boards to control the 3-axis Cartesian stage and glue >>>> gun/extrude and write all the software from scratch. The printers >>>> still needed a PC for the user interface, but I guess you weren't >>>> supposed to notice that. >>>> >>>> Later they decided to move from Arduino to all-in-one 120MHhz ARM >>>> cortex M3/4 boards and write all new libraries for the new >>>> architecture. The new all-in-one boards sell for $120-200 and combine >>>> the micro with stepper drivers, GPIO and mosfet outputs. A PC is >>>> still required for the UI but they can run stand alone with the >>>> G-code stored on an SD-Card. >>>> >>>> Now TI has released a $45 BeagleBone Black with a 1GHz ARM Cortex A8 >>>> that can host the machine control and suddenly there is interest in >>>> Linuxcnc again. The UI can be directly off the GPU or over he network. >>>> The Beaglebone Black still needs some expansion IO to drive the >>>> steppers and extruder but the BOM is <$30. >>>> >>>> The GGG's only use one or two nozzles to deposit material so the >>>> process is very slow and they have difficulty with producing features >>>> under 200um. It's become popular since the original patents expired a >>>> few years ago and you can build your own printer for only a few >>>> hundred dollars. >>>> >>>> The reasons I have heard from the "maker guys" for not aspiring to >>>> other additive manufacturing technologies have been the complexity >>>> and the high costs involved for DIY. There are a few DIY projects >>>> that use SLA with DLP (B9) or laser (SLAMPS) but they have chosen >>>> slow methods mostly due to the problems with "It's the patents >>>> stupid!" or just ignorance of the technology and SLS, Inkjet and >>>> micronozzle DIY is practically non-existent. >>>> >>>> On 06/27/2013 10:29 AM, Dave wrote: >>>>> I have been randomly watching the 3D printer efforts from the >>>>> sidelines and for the most part I have not been impressed at all. >>>>> >>>>> I think you are right ... they are way, way behind. To many, it >>>>> seems that reinventing the wheel is how they learn but at the >>>>> expense of making any meaningful >>>>> progress. >>>>> >>>>> >>Loading an SD card works because it >>>>> >>>>> is pretty bullet-proof and easy to manage as is just pressing a >>>>> button.<< >>>>> >>>>> I guess that is fine if you want to duplicate a design that someone >>>>> else >>>> has already worked out on a "standard" printer. >>>> >>>>> However I would hope that some of the "maker guys" would have more >>>> ambitious aspirations! :-) >>>> >>>>> Dave Cole >>>> ---------------------------------------------------------------------- >>>> -------- This SF.net email is sponsored by Windows: >>>> >>>> Build for Windows Store. >>>> >>>> http://p.sf.net/sfu/windows-dev2dev >>>> _______________________________________________ >>>> Emc-users mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> ------------------------------------------------------------------------ >>> ------ This SF.net email is sponsored by Windows: >>> >>> Build for Windows Store. >>> >>> http://p.sf.net/sfu/windows-dev2dev >>> _______________________________________________ >>> Emc-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> Cheers, Gene >> -- >> "There are four boxes to be used in defense of liberty: >> soap, ballot, jury, and ammo. Please use in that order." >> -Ed Howdershelt (Author) >> My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! >> My views >> <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> >> Your KVM powered virtual machines will do IOs up to seven times faster if >> you enable virtio. http://tinyurl.com/virtio >> A pen in the hand of this president is far more >> dangerous than 200 million guns in the hands of >> law-abiding citizens. >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Windows: >> >> Build for Windows Store. >> >> http://p.sf.net/sfu/windows-dev2dev >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Windows: > > Build for Windows Store. > > http://p.sf.net/sfu/windows-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
