Work holders – Relatively movable jaws – Means for direct manual adjustment of jaw
Reexamination Certificate
2000-03-06
2001-06-26
Banks, Derris H. (Department: 3723)
Work holders
Relatively movable jaws
Means for direct manual adjustment of jaw
C269S182000, C144S306000
Reexamination Certificate
active
06250621
ABSTRACT:
The present invention relates to a clamp and more particularly to an improved clamp for clasping an article between an anvil and a striker head.
BACKGROUND
Clamps usually comprise a “U” or “C” shaped frame having a pair of opposed legs and a base connecting the two legs together. One of the legs has an anvil which faces the other leg. The other leg has a threaded bolt extending through it, one end of which has a striker head which faces the anvil. The threaded bolt is threadably mounted and moveable within the other leg so that the striker head is moved toward and away from the anvil when the threaded bolt is screwed or unscrewed. An article may be clasped between the anvil and the striker head by rotating the threaded bolt in one direction to move the striker head toward the anvil until the article is grasped between the striker head and the anvil. The article is unclasped or released by rotating the threaded bolt in the opposite direction to move the striker head away from the anvil and releasing the article. It is sometimes desirable to have the striker head move quickly toward or away from the anvil to clasp or unclasp the article quickly rather than wait for the striker head to be moved toward or away from the article by threading or unthreading the threaded bolt. While quick clasping and quick release clamps have been used in the past, some of these clamps are expensive to manufacture and complicated to use and do not provide for easy access to the interior of the interior of the quick clasp and quick release control mechanism to correct any malfunction.
OBJECTS
The present invention overcomes these difficulties and has for one of its objects the provision of an improved clamp which can quickly release or clasp an article between the anvil and the striker head.
Another object of the present invention is the provision of an improved clamp which is simple to operate.
Another object of the present invention is the provision of an improved clamp which is inexpensive to maintain and manufacture.
Another object of the present invention is the provision of an improved clamp in which a malfunction of the clasp and unclasp control mechanism can be easily corrected.
Other and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.
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Banks Derris H.
Great Neck Saw Manufacturers, Inc.
Previto Joseph J.
Shanley Daniel
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