The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2003
Filed:
Sep. 26, 2001
Leone S.p.A., , IT;
Abstract
The present invention refers to a process for making an expansion screw and a screw thus made; the expansion screw ( ) has two bodies ( ) that can be spaced apart by acting on the driving portion ( ) of a double screw ( ) housed within threaded central bores ( ) provided in the two bodies ( ); each of the bodies ( ) has at least one bore ( ) parallel to the threaded bore; also provided is at least a hollow cylindrical guide ( ) housed within a corresponding pair of parallel bores ( ) disposed on the two bodies ( ) in facing relationship; inserted in each guide ( ) is a pin ( ) for sliding therein; each guide ( ) is fixed to one of the bodies, while the relevant pin ( ) held therein is fixed to the other body, and the sliding of the pin ( ) relative to the guide ( ) takes place with friction owing to the force exerted upon assembly.