F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
A—HUMAN NECESSITIES
A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
A47G—HOUSEHOLD OR TABLE EQUIPMENT
A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
A47G1/16—Devices for hanging or supporting pictures, mirrors, or the like
A47G1/20—Picture hooks; X-hooks
A47G1/21—Picture hooks; X-hooks with clamping action
Dispositif de jonction des elements d'une cremone a tetiere et a tringles en deux elements, a ajustement en longueur par sectionnement de l'extremite inferieure de l'element superieur