Device for screwing and unscrewing screws, bolts and nuts
AssigneeSpiranyl S.a.r.l.
InventorJacques Simonin
Life of this patent
Estimating the term…
Abstract
Device for screwing and unscrewing screws, bolts and nuts comprising an electric motor (2), a flywheel (14) fixed on an auxiliary shaft (5) connected to the output shaft of the electric motor by means of a pair of pinions (3, 4) made of elastic plastic material like polyurethane and a wrench (9) connectable to said flywheel by way of projecting teeth (15, 16) and moving axially in relation to said flywheel by way of an elastic member (11).
Claims8
Device for screwing and unscrewing screws, bolts and nuts comprising a case (1) an electric motor (2) provided with an output shaft and inserted in said case (1), a first pinion (3) pressure assembled on said output shaft, an auxiliary shaft (5) having a first end and a second end, said auxiliary shaft being mounted at said first end on said case (1), a wrench (9) forming a seat (8) wherein said second end of said auxiliary shaft is engaged, a second pinion (4) pressure assembled on said auxiliary shaft (5), said first pinion engaging said second pinion, said first and second pinion being made of plastic elastic material, a flywheel (14) connected to said auxiliary shaft and driven thereby, said wrench (9) being connectable to said flywheel (14) and moving axially in relation thereto by means of elastic means (11).
Dependencies are inferred from the claim text.