Implements or apparatus for applying pushing or pulling force – Fluid pressure – Vehicle attached
Reexamination Certificate
2001-05-18
2003-03-11
Watson, Robert C. (Department: 3723)
Implements or apparatus for applying pushing or pulling force
Fluid pressure
Vehicle attached
C254S124000
Reexamination Certificate
active
06530559
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates a device for use in demolition or deconstruction. More specifically it is a device for use to pry conjoined objects apart.
2. Related Information
In demolition, the high cost of recovering and recycling materials usually results in the deposition of potentially valuable material in to waste dumps. In new construction utility grade lumber is often used and disposed of in substantially new condition, because the cost of tearing apart this grade of lumber is higher than the cost of new lumber. Heretofore lumber that has been nailed together is separated by manual prying.
The present invention has as an advantage that the labor is greatly reduced in prying apart lumber that is nailed.
SUMMARY OF THE INVENTION
Briefly the present invention is a prying apparatus comprising a frame having a wedge portion at is distal end, a blade pivotally mounted toward the distal end in cooperative alignment with the wedge portion. An extension is rigidly attached to the blade and extends away from the distal end, and an arm is pivotally attached at one end to a terminal end of the extension and at the other end to a lever. The lever is pivotally mounded to the frame at a point an unequal distance between said ends of said lever to form a short section and a long section. A power source is preferably mounted on the frame to operate the lever.
REFERENCES:
patent: 722975 (1903-03-01), Haley
patent: 3819153 (1974-06-01), Hurst et al.
Johnson Kenneth H.
Watson Robert C.
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