I hear you loud and clear Paul. I'm not a fan of patents in general.
ESPECIALLY when a tangible product is not made before the patent. For
example, the guy that has a patent on the vision systems used on pick and
place machines.
At the risk of being flamed, I think most patents get in the way of
technological development. Very few individuals hold patents; the company
they work for hold the patent. So in a sense, an individuals idea is being
stolen by the company they work for anyway since that individual can't take
their patented idea to the next company they work for.
> -----Original Message-----
> From: Paul Klasek [SMTP:[log in to unmask]]
> Sent: Thursday, January 27, 2000 3:32 PM
> To: [log in to unmask]
> Subject: Re: [TN] wave soldering - board rotation
>
> Oh, what slip !, guilty, Graham, my friend (hope so); could you please
> disregard my last note on this motto,
> before we'll get before Judge Judy, please !
> Being old lab rat aka Bev i forgot to patent it 15 years ago !
>
> Reminds me (be vewy, vewy vary) ResMed just acquired a global patent for
> enclosing flexible acoustic noise shield;
> to shield few frequencies out for our blissfully sleeping patients .
> For those less technically minded IT'S A MOTOR IN PLASTIC BAG !
> (nooo kidding ; with 2 full time lawyers); should you consider to run any
> beast in a plastic wrap for ACOUSTIC purpose;
> here yo are, for a wet purpose quite free and legal . Sad hey ?
>
> Don't ask me about heat dissipation ; that is A serious art better not
> patented as not to advertise it .
>
> Paul Klasek
> ResMed
>
> PS
> My apologies Ryan (one never knows this millenium)
>
> -----Original Message-----
> From: Ryan Grant [mailto:[log in to unmask]]
> Sent: Friday, 28 January 2000 7:45
> To: [log in to unmask]
> Subject: Re: [TN] wave soldering - board rotation
>
>
> Hi Graham,
> I can't speak from experience, but we have some plaques in our
> hallway bragging that our engineers hold the patent on the idea.
> Apparently
> it does work. Now we use selective solder pallets, and most boards we
> build
> are too big to rotate anyway. So I can't tell you first hand that it
> works.
>
> Ryan G.
>
> > -----Original Message-----
> > From: Collins, Graham [SMTP:[log in to unmask]]
> > Sent: Thursday, January 27, 2000 10:45 AM
> > To: [log in to unmask]
> > Subject: [TN] wave soldering - board rotation
> >
> > Is the TechNet back up? Yippee!
> >
> > Good day TechNet!
> > Has anyone out in wave soldering land tried using a wave soldering
> fixture
> > that allows you to change the rotation of the board so that the edge of
> > the
> > board isn't parallel to the conveyor?
> >
> > I'm told that rotating the board slightly (say 5 degrees - not 90
> > degrees!)
> > can reduce the
> > occurrence of solder skips on SMT chips (caps and resistors). Any
> > experience out there to confirm or deny this?
> >
> > Final note: the board design is not suitable for a paste reflow of the
> SMT
> > parts followed by use of a partial wave fixture. Otherwise that would
> be
> > my
> > #1 choice...
> >
> > regards,
> >
> > Graham Collins
> > Process Engineer,
> > Litton Systems Canada, Atlantic Facility
> > (902) 873-2000 ext 6215
> >
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