Patent ID: 6176479
Filing Date: 2001-01-23
Classification: B25B

Abstract:
A clamping device comprising:a first arm member having a pair of first elongate members spaced apart and being interconnected to one another, each of said first elongate members having a first end, a second end, and a central portion;a second arm member having a pair of second elongate members spaced apart and being interconnected to one another, each of said second elongate members having a first end, a second end, and a central portion, said first ends of said second elongate members being pivotally attached to said central portions of said first elongate members;a mounting bracket being securely mounted to said central portion of one of said first elongate members;a third arm member having a first end, a central portion, and a pair of third elongate portions spaced apart and being securely attached to said central portion of said third arm member and being perpendicular to said first and second arm members, each of said third elongate members having second ends, said first end of said third arm member being pivotally attached to said mounting bracket;a support member having a first end and a pair of second ends being spaced apart, said first end of said support member being securely attached to said mounting bracket;a plurality of driving member supports, a first one of which is securely fastened to said second ends of said support member and a second one of which is securely fastened to said first ends of said first arm member;a plurality of threaded driving members, a first one of which is threaded through said first one of said driving member supports and a second one of which is threaded through said second one of said driving supports, each of said driving members having a first end and a second end;a plurality of jaw members each of which is securely attached at said second ends of a respective one of said arm members; anda plurality of arm drive members, a first one of which is securely mounted to said second arm member and a second one of which is securely mounted to said third arm member.