Work holders – With ground traversing means
Reexamination Certificate
2006-03-21
2006-03-21
Wilson, Lee D. (Department: 3723)
Work holders
With ground traversing means
C269S047000
Reexamination Certificate
active
07014180
ABSTRACT:
Method and apparatus for storing stacks of lumber to avoid or correct warpage utilizing two or more rectangular or square frameworks, open throughout which may include linkage for maintaining a fixed spacing of the frameworks and/or rollers for mobility in handling the stacks of lumber. A side of each framework may be hinged for opening and include a latch mechanism for securing such side from opening. Two adjacent sides of each framework each mount a force actuator having a flat face member supported within the interior periphery of each framework for engagement with the exposed surface of the stacks of lumber positioned within and extending between the two or more frameworks which upon activation of the force actuator squeezes the stack of lumber in two directions, thereby avoiding or correcting warpage during storage of the stacks of lumber. Further, where the stack of lumber does not present a uniform exposed adjacent surfaces filler blocks are used to provide such surfaces initially or whenever a price of lumber is removed from the stack.
REFERENCES:
patent: 3831511 (1974-08-01), Back
patent: 4022094 (1977-05-01), Hetherington
patent: 5505425 (1996-04-01), Shelton
patent: 6322061 (2001-11-01), Maser et al.
patent: 6863271 (2005-03-01), Clouser
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