A spring clamp wherein a reduced effort is needed on the handle end as the engagement end is opened further. The spring clamp can include a clamping force adjustment means through the use of a spring pack, central rod and a folding adjuster. The spring clamp can also include low friction mounts at the ends of a spring pack to reduce user effort on the handle end.

A spring clamp wherein a reduced effort is needed on the handle end as the engagement end is opened further. The spring clamp can include a clamping force adjustment means through the use of a spring pack, central rod and a folding adjuster. The spring clamp can also include low friction mounts at the ends of a spring pack to reduce user effort on the handle end.

A hinge pin joint for facilitating precise separation of the jaws of a spring clip, including a base cylinder with a threaded bore, supports extending laterally out from the base cylinder, pin supports capable of pivoting, and stabilizing wings extending from the pin supports. In one embodiment, the capability of pivoting includes pins that are integral with the pin supports and which extend out laterally from the pin support. An alternate embodiment includes aligned opening in the pin supports into which pins may be inserted. At least one stopper may be disposed on at least one of the pin supports for supporting the upper shell. The stabilizing wings are configured as plates that are semi-rigidly secured in guide structures within the lower shell.

A hinge pin joint for facilitating precise separation of the jaws of a spring clip, including a base cylinder with a threaded bore, supports extending laterally out from the base cylinder, pin supports capable of pivoting, and stabilizing wings extending from the pin supports. In one embodiment, the capability of pivoting includes pins that are integral with the pin supports and which extend out laterally from the pin support. An alternate embodiment includes aligned opening in the pin supports into which pins may be inserted. At least one stopper may be disposed on at least one of the pin supports for supporting the upper shell. The stabilizing wings are configured as plates that are semi-rigidly secured in guide structures within the lower shell.