Fastening device for ski-boots

Claim 1

A fastening device for ski boots comprising: a support base; a plate-like lever pivotally mounted on said support base; at least one hook-shaped transverse seat in said lever on a side facing said support base; a hook-shaped member having a hooked end releasably engageable with said at least one hook-shaped seat; a plate-like portion end being provided on said hook-shaped member and including a threaded hole being positioned therein; a tightening unit; a tie rod having a first end pivoted to said tightening unit and a second end forming an enlarged head; a threaded hole formed in said enlarged head of said tie rod; a shaft having a first threaded end portion screwed into the threaded hole of said hook-shaped member and a second threaded end portion screwed into the threaded hole of the enlarged head of said tie rod, said first and second end portions of said shaft being oppositely threaded; and a knurled wheel being affixed substantially half-way along said shaft, imparting rotation to said knurled wheel enables a fine under load adjustment in tightening said plate-like lever relative to said hook-shaped member while said plate-like lever and said hook-shaped member are in engagement.