Patent ID: 7670043

Claim:
A device for generating pulsed motions, comprising: a motorized drive element ( 1 ) connected to a drive shaft ( 16 ); two parallel shafts ( 3 ; 4 ), each of said parallel shafts having a longitudinal axis ( 5 ; 6 ), a rear end, and a front end ( 9 ; 10 ); a gear unit ( 2 ) comprising two oval gears ( 20 ′; 20 ″) one of said two oval gears ( 20 ′) being connected to the drive shaft ( 16 ) and the other of said two oval gears ( 20 ″) being connected to the rear end of one of the two parallel shafts ( 3 ); two arcuate drive levers ( 30 ; 31 ), each of said arcuate drive levers having a first end ( 32 ; 33 ) and at least one second end ( 34 ; 35 ), where each first end ( 32 ; 33 ) of the drive levers ( 30 ; 31 ) is connected in a rotatable manner with one respective front end ( 9 ; 10 ) of the two parallel shafts ( 3 ; 4 ) about a first axis of rotation ( 11 ; 12 ); and a polysomic drive body ( 40 ) connected to the second ends ( 34 ; 35 ) of the drive levers ( 30 ; 31 ) so as to be rotatable about two second axes of rotation ( 13 ; 14 ); wherein the oval gears ( 20 ′; 20 ″) exhibit a large semi-axis (a) and a small semi-axis (b), a ratio of the small semi-axis (b) to the large semi-axis (a) is 1/√2, and only one of the two parallel shafts ( 3 ) is connected to the drive shaft ( 16 ) of said motorized drive element ( 1 ) by means of said gear unit ( 2 ) of oval gears ( 20 ′; 20 ″).