Patent ID: 7114228

Claim:
A spring compressor comprising an actuator with a body ( 100 ) and a rod ( 110 ) that are telescopically movable relative to each other, and two jaws ( 1 , 1 ′) each comprising an attachment portion ( 2 ) for attachment to the actuator and a working portion ( 3 ) for engaging a turn of a helical spring ( 8 , 9 ), in which the working portion ( 3 ) of each jaw comprises a first part ( 4 ) and a second part ( 12 ) that are hinged relative to each other, the first part ( 4 ) being connected to the attachment portion ( 2 ), wherein the first part ( 4 ) carries, close to said attachment portion, a circular track segment ( 5 ) for bearing against a portion of a spring turn, provided along its inside edge with a rim ( 7 ) for retaining the turn, and wherein the second part is in the form of an arm ( 12 ) hinged to the attachment portion ( 2 ) or to the first part ( 4 ) in the vicinity of one end ( 5 c ) of the track segment ( 5 ) about an axis ( 11 ) that is substantially perpendicular to the surface of the track segment ( 5 ), and whose free end forms a zone for taking charge of a turn of the spring, wherein the track segment ( 5 ) has a free end ( 5 a ) opposed to said one end ( 5 c ), a width of said free end ( 5 a ) increasing towards said one end ( 5 c ).