Earth working – Processes
Reexamination Certificate
2011-04-12
2011-04-12
Pezzuto, Robert E (Department: 3671)
Earth working
Processes
C172S699000, C172S684000
Reexamination Certificate
active
07921930
ABSTRACT:
An apparatus and method of installing a shank onto a ripper assembly of a tractor or crawler. A rotating shank installer (RSI) is welded onto a front face of a ripper assembly of a tractor, e.g., on the outside surface of a pocket beam. A portion of the RSI is allowed to rotate with respect to the pocket beam. With the shank in a substantially horizontal position with respect to the ground, the shank is secured between two plates of the RSI using pins wherein the plates can rotate with respect to the pocket beam. The shank is locked in place by two pins placed through the plates and the shank's weight is unbalanced with respect to the RSI. The ripper assembly is elevated causing the shank to rotate within the RSI to a substantially vertical position. The crawler is moved forward while lowering the ripper assembly in order to rip a groove into the ground with the bottom portion of the shank where the shank lowers into the ground. The RSI is disconnected from the shank wherein the shank is held in place by the grove. The bottom of the pocket is positioned over the top of the lowered shank and the pocket is lowered so that the shank is installed within the pocket and secured therein.
REFERENCES:
patent: 2552292 (1951-05-01), Metz et al.
patent: 3901328 (1975-08-01), Stanfield
patent: 4040261 (1977-08-01), Schuck et al.
patent: 4103443 (1978-08-01), Pelsy
patent: 4119157 (1978-10-01), Schuck et al.
patent: 4313504 (1982-02-01), Fischer
patent: 4618005 (1986-10-01), Tower
McGowan Jamie L
Pezzuto Robert E
Sanelli Family Trust
LandOfFree
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