Hi,

Is anyone here is familiar with the allowable types of surface 
shading/stippling that are allowed in design and utility patent drawings?

I am trying to figure out how to do this in solidworks and it is not easy.  

A hatch pattern on flat surfaces only similiar to ISO03W100 comes close,  
but when applying to an isometric with HLR the hatch doesn't respect the 
HLR rules in effect and bleeds into areas in which it should not be seen.

I also came close with a custom pattern texture, and then rendering with 
contour lines, close but not close enough.  

I just decided that after all these years I should be able to generate this 
type of shading electronically.  As it is I'm still drawing them by hand.

I'm curious what others are doing?

Thx

Zander

Zander.

    I don't think it makes any difference at all with the patent office. 
And may be more a preference with the patent attorney. My last few 
patents went in with straight SW (hidden line- no shading) generated 
graphics.  In fact, one of them was from an STL file, triangles 
included, the thing looked like crap. The draftsman used autoCad or 
something and just deleted most of the triangles, except for the areas 
he couldn't without loosing details.  I am not even sure how he got the 
STL file, must have converted it from an IGS, or the Native SW file.

clay

Zander wrote:

>Hi,
>
>Is anyone here is familiar with the allowable types of surface 
>shading/stippling that are allowed in design and utility patent drawings?
>
>I am trying to figure out how to do this in solidworks and it is not easy.  
>
>A hatch pattern on flat surfaces only similiar to ISO03W100 comes close,  
>but when applying to an isometric with HLR the hatch doesn't respect the 
>HLR rules in effect and bleeds into areas in which it should not be seen.
>
>I also came close with a custom pattern texture, and then rendering with 
>contour lines, close but not close enough.  
>
>I just decided that after all these years I should be able to generate this 
>type of shading electronically.  As it is I'm still drawing them by hand.
>
>I'm curious what others are doing?
>
>Thx
>
>Zander
>  
>

-- 
a_design

Please remove the SPAM from the email address to reply.

Yes this is a drawing bug in 2003 which I assume you are using as with all previous releases. Its a good idea to make patent
drawings vector based, so they can be easily scaled in other packages and have numbers or notes added electronically. This is a
drawback if you use raster based files like tiffs as resolution becomes an issue during scaling and the line quality is poor to
start with.
We use acad to fix up a lots of errors on the vector files, including trimming and extending lines, especially with 3d views.
Sections are normally done in planar views, which is adequate for patent drawings and SW usually does the section lines OK if the
scale of the view is set right. Anything like 3d sections has to have the hatching added to the exported vector view with acad or
something else.

The good news is that 2004 appears to have finally got the 3d/2d translation bug fixed after all these years and exports vector
*.dwgs perfectly, which saves hours of correcting even though it misses a few edges now and then.

regards

Toby

"Zander" <nomail@no.com> wrote in message news:Xns94548FCBA7AE3sig6667.245txjh@216.40.28.71...
> Hi,
>
> Is anyone here is familiar with the allowable types of surface
> shading/stippling that are allowed in design and utility patent drawings?
>
> I am trying to figure out how to do this in solidworks and it is not easy.
>
> A hatch pattern on flat surfaces only similiar to ISO03W100 comes close,
> but when applying to an isometric with HLR the hatch doesn't respect the
> HLR rules in effect and bleeds into areas in which it should not be seen.
>
> I also came close with a custom pattern texture, and then rendering with
> contour lines, close but not close enough.
>
> I just decided that after all these years I should be able to generate this
> type of shading electronically.  As it is I'm still drawing them by hand.
>
> I'm curious what others are doing?
>
> Thx
>
> Zander

Requirements for patent drawings are in 37 CFR 1.84 (
http://www.uspto.gov/web/offices/pac/mpep/consolidated_rules.pdf ).


Zander <nomail@no.com> wrote in message news:<Xns94548FCBA7AE3sig6667.245txjh@216.40.28.71>...
> Hi,
> 
> Is anyone here is familiar with the allowable types of surface 
> shading/stippling that are allowed in design and utility patent drawings?
> 
> I am trying to figure out how to do this in solidworks and it is not easy.  
> 
> A hatch pattern on flat surfaces only similiar to ISO03W100 comes close,  
> but when applying to an isometric with HLR the hatch doesn't respect the 
> HLR rules in effect and bleeds into areas in which it should not be seen.
> 
> I also came close with a custom pattern texture, and then rendering with 
> contour lines, close but not close enough.  
> 
> I just decided that after all these years I should be able to generate this 
> type of shading electronically.  As it is I'm still drawing them by hand.
> 
> I'm curious what others are doing?
> 
> Thx
> 
> Zander

mr_reznat@yahoo.com (Richard) wrote in 
news:362c5087.0312182027.28c200fc@posting.google.com:

> http://www.uspto.gov/web/offices/pac/mpep/consolidated_rules.pdf

Thanks for the info!

What always cracks me up is we just sent the cad file in a dxf format and
our
patent attorneys have a graphic artist recreate them to pass muster with the
PTO.
We thought we could send in a engineering print and guess what the PTO said
no
way.
"clay" <a_designSPAMSPAMSPAM@citlink.net> wrote in message
news:3FE14788.5030300@citlink.net...
> Zander.
>
>     I don't think it makes any difference at all with the patent office.
> And may be more a preference with the patent attorney. My last few
> patents went in with straight SW (hidden line- no shading) generated
> graphics.  In fact, one of them was from an STL file, triangles
> included, the thing looked like crap. The draftsman used autoCad or
> something and just deleted most of the triangles, except for the areas
> he couldn't without loosing details.  I am not even sure how he got the
> STL file, must have converted it from an IGS, or the Native SW file.
>
> clay
>
> Zander wrote:
>
> >Hi,
> >
> >Is anyone here is familiar with the allowable types of surface
> >shading/stippling that are allowed in design and utility patent drawings?
> >
> >I am trying to figure out how to do this in solidworks and it is not
easy.
> >
> >A hatch pattern on flat surfaces only similiar to ISO03W100 comes close,
> >but when applying to an isometric with HLR the hatch doesn't respect the
> >HLR rules in effect and bleeds into areas in which it should not be seen.
> >
> >I also came close with a custom pattern texture, and then rendering with
> >contour lines, close but not close enough.
> >
> >I just decided that after all these years I should be able to generate
this
> >type of shading electronically.  As it is I'm still drawing them by hand.
> >
> >I'm curious what others are doing?
> >
> >Thx
> >
> >Zander
> >
> >
>
> -- 
> a_design
>
> Please remove the SPAM from the email address to reply.
>
>