NEW PROCESS FOR MANUFACTURING FRAMES AND STEERING FORKS, CYCLES AND PRODUCTS THEREOF

Abstract

Abstract Translated from French PROCEDE DE FABRICATION D'UN ENSEMBLE DE CADREFOURCHE DE DIRECTION DE CYCLES DANS LE BUT D'EN AMELIORER LE RENDEMENT AERODYNAMIQUE, CONSISTANT A REALISER LES FOURREAUX DE FOURCHE DE DIRECTION 1 LE TUBE DIAGONAL 2, LE TUBE DE SELLE 3, LES HAUBANS DE FOURCHE ARRIERE 4, AINSI QU'EVENTUELLEMENT LA DOUILLE DE DIRECTION 7, A PARTIR DE TUBES PROFILES DE SECTION CONVEXE DONT LE MAITRE-COUPLE SE SITUE SENSIBLEMENT AU TIERS DE LA DISTANCE SEPARANT LES DEUX EXTREMITES DE LADITE SECTION, ET A ASSEMBLER CES TUBES DE TELLE SORTE QUE, FACE AU SENS D'ECOULEMENT DE L'AIR CEUX-CI SOIENT DISPOSES, LE BORD AMINCI VERS L'AVANT, LE BORD LE PLUS EPAIS VERS L'ARRIERE, LE TUBE HORIZONTAL 5 ET LES BASES 6 DE LA FOURCHE ARRIERE DU CADRE ETANT REALISES A PARTIR DE PROFILES DE SECTION ELLIPTIQUE DONT LE GRAND AXE EST DISPOSE HORIZONTALEMENT AFIN DE CONFERER AU CADRE UNE MEILLEURE INERTIE TRANSVERSALE. L'INVENTION S'APPLIQUE A TOUS LES CYCLES ET PLUS PARTICULIEREMENT AUX CYCLES DE COMPETITION SUR ROUTE ET SUR PISTE. PROCESS FOR MANUFACTURING A FRAME ASSEMBLY STEERING FORK CYCLES WITH THE PURPOSE OF IMPROVING THE AERODYNAMIC EFFICIENCY, CONSISTING OF REALIZING THE STEERING FORK LEGS 1 THE DIAGONAL TUBE 2, THE SADDLE TUBE 3, THE REAR GUARD 4, AS WELL AS POSSIBLY THE STEERING BUSH 7, FROM PROFILE TUBES OF CONVEX SECTION WHOSE MASTER TORQUE IS LOCATED SENSITIVELY A THIRD OF THE DISTANCE SEPARATING THE TWO ENDS OF THE SAID SECTION, AND TO ASSEMBLE THESE TUBES OF SUCH KIND , FACING THE DIRECTION OF AIR FLOW THESE ARE ARRANGED, THE SLIMMED EDGE TO THE FRONT, THE THICKER EDGE TO THE REAR, THE HORIZONTAL TUBE 5 AND THE BASES 6 OF THE REAR FORK OF THE FRAME BEING MADE FROM ELLIPTICAL SECTION PROFILES WHOSE LARGE AXIS IS HORIZONTALLY AVAILABLE IN ORDER TO GIVE THE FRAME BETTER TRANSVERSE INERTIA. THE INVENTION APPLIES TO ALL CYCLES AND MORE PARTICULARLY TO ROAD AND TRACK COMPETITION CYCLES.

Inventors

• 👤 Maurice Menard
• 👤 Joel Redois

Bibliographic Details