is this rare, or am i getting excited over nothing, lol

 

think thats a normal think matey

 

haha ok, had to ask!

 

its amazin wot they had back in the day u no lol,

a just reshelled my 2wd saff into a k plate shell nd now a aint got a heated window lol

 

yeah that's what i thought, this is advanced for a 1990 sierra!!

oh really, maybe an optional extra then?

 

Standard on 2wd folks, my 89 has the original and all the wiring meant that the shells had to be sorted too... more holes - lol

 

out of all the sierras ave broke mate witch has to be bout 30ish a find that the heated windows are only in the ghias or xr4x4's or cossies

 

Nope nothing rare and NOT optional was on Ghia (Which is all the Saph is) and of course the 2000E and XR4x4, and as an option on GL IIRC, also was on other Fords of the era I.E Escort Ghia, XR3I, S2 RST and Fiesta RST. Plenty of equipment on these to put so called "Modern cars" to shame. Just a pity Ford did not renew the patent they had on the screen.

Martin

 

I'm glad that ford didn't renew the patent on the heated front screen, as it makes so many other cars safer by having them.
I've sat at the side of the road sometimes when there is a sudden downpour and the windows steam up, takes me about 10 mins each time to remember that I have a heated front screen!!
tabetha

 

Only other car i've ever seena heated screen in is an alhambra? Which is basically a Galaxy. They don't seem to have been taken on by other markers to a big degreee for some reason. Don't know why - they are awesome!

 

It's due to FORD having/had the patent on them, but that's now expired.
tabetha

 

Like I said above this was Fords patented technology so no one could copy this design (It's derived from Aircraft) there are actually other cars Jags, Land Rover's etc have them but only because Ford own them . That patent expired a few years back and was not renewed and so sadly other manufactures can now copy

Martin

 

i know abit of topic and your talking about car's and ford patent but we had coaches years ago they where built in 79 which had headed windscreen's

 

Depends on how it was actually heated, it couldn't have been been like the Ford design?

Martin

 

little thin wires ran up through the glass bearly able to see them unless you where looking for them with a black box about 4inch x 3 inch with the electrics inside behind the dash thats what was in the old bus

 

It may just be like a heated rear screen perhaps? The Ford one is a "Special" one, it uses the same technology as aircraft do.

Martin

 

Coaches built in 1979 would likely be toughened glass and not laminated, ie single pane, so could well have had wires on it just like the rear screens.
The patent actually covered the placement of the wires on the compressed sheet between the two glass pieces that make up the laminated screen.
Most aircraft screens are not made from glass, it simply isn't strong enough, the same stuff is used as serious deep sea subs, and the record breaking visit to the bottom of the Marianas Trench, which exerted 1,100 atmospheres of pressure upon the material, or in real world terms 812 TONS per square inch, no that's not a misprint.
The material of choice is PMMA, or Poly(methyl methacrylate), in various thicknesses.
Another more common name is ACRYLIC, just a special version.
tabetha