Petersen Manufacturing Co., Inc.

Christian Petersen

A long nose locking hand tool having a pair of opposing jaw members, a fixed handle, a movable handle, and lever locking means therebetween for maintaining a toggle relationship between the jaws when in a closed position; wherein each of the jaw members comprises a jaw face having a total jaw length to average jaw height ratio of from about 6.5 to about 8.5 made of an alloy spring steel with a hardness range of from about 53 to about 57 Rockwell C, having a nominal parallel opening when they are spaced apart, approximately 3/16 inch, thereby enabling said jaw members to clamp a workpiece up to 3/16 inch thick. Furthermore, said fixed handle has an adjustment screw and a strike surface with an axis passing through said strike surface defining the direction of a line of force impartable to the hand tool; said pair of jaws further defining a bisecting axis formed by the angle of said jaws when closed against a workpiece, and the angle between said axes being less than 50.degree. when the gripping tips of said jaw members are in a closed position.

Long nose locking plier

A long nose locking hand tool having a pair of opposing jaw members, a fixed handle and a movable handle and lever locking means therebetween for maintaining a toggle relationship between the jaws when in a closed position; and wherein each of said jaw members comprising a jaw face configuration having a total jaw length to average jaw height ratio of from about 6.5 to about 11.5 with a through jaw hardness range of from about 53 to about 57 Rockwell C, with said jaw members made of an alloy spring steel, said jaw members having a nominal parallel opening when they are spaced apart, no greater than about 1/4 inch, thereby enabling said jaw members to clamp a workpiece therebetween with parallel jaw faces by flexing to the parallel condition when closed and returning to their original unstressed state when released of clamping pressure. A long nose locking hand tool having a pair of opposing jaw members, a fixed handle having an adjustment screw, and a movable handle and lever locking means therebetween for maintaining a toggle relationship between the jaw faces of said jaw members when in a closed position; and wherein said fixed handle having a strike surface, and having an axis passing through said strike surface defining the direction of a line of force impartable to the hand tool; and said pair of jaws further defining a bisecting axis or line formed by the angle of said jaws when closed against a workpiece gripped therebetween; and the angle between said axes being less than 5.degree. when the gripping tips of said jaw member are in a generally touching or closed position.

Long nose locking pliers

A long nose locking hand tool having a pair of opposing jaw members, a fixed handle and a movable handle and lever locking means therebetween for maintaining a toggle relationship between the jaws when in a closed position; and wherein each of said jaw members comprising a jaw face configuration having a total jaw length to average jaw height ratio of from about 6.5 to about 11.5 with a through jaw hardness range of from about 53 to about 57 Rockwell C, with said jaw members made of an alloy spring steel, said jaw members having a nominal parallel opening when they are spaced apart, no greater than about 1/4 inch, thereby enabling said jaw members to clamp a workpiece therebetween with parallel jaw faces by flexing to the parallel condition when closed and returning to their original unstressed state when released of clamping pressure.

A long nose locking hand tool having a pair of opposing jaw members, a fixed handle and a movable handle and lever locking means therebetween for maintaining a toggle relationship between the jaws when in a closed position; and wherein each of said jaw members comprising a jaw face configuration having a total jaw length to average jaw height ratio of from about 6.5 to about 8.5 with a through jaw hardness range of from about 53 to about 57 Rockwell C, with said jaw members made of an alloy spring steel, said jaw members having a nominal parallel opening when they are spaced apart, approximately 3/16 inch, thereby enabling said jaw members to clamp a workpiece up to 3/16 inch thick with parallel jaw faces by flexing to the parallel condition when closed and returning to their original unstressed state when released of clamping pressure.

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DeWitt, NE, United States of America

Christian Petersen