Patent ID: 7395688
Filing Date: 2008-07-08
Classification: B25B,Y10T

Abstract:
1. A hog ring fastening device comprising: a body member; a magazine attached to the body member; jaws pivotally supported on the body member; a main pneumatic cylinder for turning the jaws; a first swing member supported for turning on the body member; a push means supported on the first swing member; a feed pneumatic cylinder fixed to the first swing member and connected to a port of the main pneumatic cylinder; a second swing member supported for turning on the body member so as to be in contact with a free end of a piston rod included in the feed pneumatic cylinder; a feed means supported on the second swing member; a spring seat fixed to the body member; a compression spring extended between the spring seat and the first swing member; and an extension spring extended between the first and the second swing member.