At the risk of beating a dead horse in the pursuit of accuracy, the "fowler" designation means that on extension
the flap moves aft, then down via a track, drive screw or external hinge, increasing wing chord, wing area and altering the chordline of the wing.

A fowler flap may have one, two, three or more segments. The B-737 and B-727 for instance have a multiple segment, multi slotted fowler flap
driven by internal jackscrews (hydraulic, I believe), while all single engine Cessnas since the C-150 have a single slotted fowler flap driven by an
electric motor that ride in a track similar to those sold by Robart website: http://robart.com/Hinge.aspx

Review of the following pics will show that both Boeing jets and single engine Cessas have fowler flaps, differing only in their size and complexity...

B-727:

http://www.airliners.net/open.file?i...=918272&size=L


Single Engine Cessnas:

http://www.airliners.net/open.file?i...=958272&size=L

http://www.airliners.net/open.file?i...=948044&size=L

Cheers!

Jim