US Patent: 4,730,524
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| Long Nose Locking Plier
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Patentee:
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| Christian Petersen (exact or similar names) - DeWitt, NE |
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Patent Dates:
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| Applied: |
Sep. 16, 1985 |
| Granted: |
Mar. 15, 1988 |
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Patent Pictures:
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Christian Petersen patent March 15, 1988 |
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Stan Schulz
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Description: |
| Lackenbach, Siegel, Marzullo & Aronson - patent attorneys
The portion of the term of this patent subsequent to September 17, 2002 has been disclaimed.
Abstract
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.
Design patent no. D261,096 is for the same tool.
Patent nos. 2,563,267, 3,791,012, 4,307,365, 4,541,312, and 4,456,680 cited as references. |
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