Patent ID: 6129339
Filing Date: 2000-10-10
Classification: B25B,B60G

Abstract:
A spring compressor comprising:a substantially rigid support frame having a first side and a second side opposite the first side;a plurality of arms movably attached to the support frame;a plurality of spring engagement devices for engaging a spring the spring engagement devices being attached to the arms; andan actuating mechanism operably coupled with the plurality of arms to move the arms relative to each other and the support frame,the plurality of arms including a first upper arm attached to the first side of the support frame and a second upper arm attached to the second side of the support frame generally opposite the first upper arm,the first upper arm being independently movable relative to the second upper arm,the plurality of arms further including a first lower arm attached to the first side of the support frame and a second lower arm attached to the second side of the support frame,the first lower arm being spaced apart from the first upper arm,the second lower arm being generally opposite the first lower arm and spaced apart from the second upper arm,each of the arms being independently movable from each of the other arms,said actuating mechanism including a force screw having a lower threaded portion and a middle threaded portion, a middle trunnion assembly threadably receiving the middle threaded portion and pivotally engaging the lower arms, a bottom trunnion assembly threadably receiving the lower threaded portion and movably engaging the support frame, and the middle and bottom trunnion assemblies being operable to permit the lower arms to pivot relative to the support frame.