Earth working – Tool – standard or connection – Interlocked or interfitted parts
Reexamination Certificate
2000-02-07
2001-11-13
Novosad, Christopher J. (Department: 3671)
Earth working
Tool, standard or connection
Interlocked or interfitted parts
C172S762000
Reexamination Certificate
active
06315057
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to sweep elements and, more particularly, to sweep apparatus which may be easily and quickly removed from a tine and secured to the tine.
2. Description of the Prior Art
Sweep elements are used in contemporary “nor till farming” for cutting vegetation and lifting up ground for planting and fertilizing. The ground is thus minimally disturbed, which results in less erosion than plowing and discing.
Sweep elements of the prior art are typically welded or bolted to tines which are in turn secured to a tractor, or other machine. A fine typically is spring loaded to some machine, and the sweep is typically fastened to the bottom of the tine by bolts. The bolts get beat up, destroyed, etc., during the work performed by the sweep. The bolts go directly through the sweep and tine and, when they are distorted, beat up, etc., are very difficult to remove. Accordingly, in many cases sweeps must be cut off from a tine with a torch.
The sweep apparatus of the present invention overcomes the problems of the prior art by using a pair of flex pins to secure a sweep to an adapter shoe which is in turn secured to a tine by a pair of bolts, or, in an alternate embodiment, a sweep is secured directly to a differently designed tine.
SUMMARY OF THE INVENTION
The invention described and claimed herein comprises a sweep element which is pinned to an adapter shoe by a pair of flex pins. The shoe is secured to an existing tine by a pair of bolts. In the alternative, a tine may include a pair of laterally extending bores or holes and a sweep of the present invention may be secured directly thereto. The sweep includes a pair of side flanges through which the flex pins extend to secure the sweep to the shoe or directly to the tine.
Among the objects of the following invention are the following:
To provide new and useful sweep apparatus;
To provide new and useful sweep apparatus including a front panel and a pair of side panels through which extend holes or apertures for receiving flex pins;
To provide a new and useful shoe adapter for holding to a tine and for receiving a sweep; and
To provide new and useful sweep apparatus which is easily removed from and secured to a tine.
REFERENCES:
patent: 2595353 (1952-05-01), Graham
patent: 2688475 (1954-09-01), Small
patent: 3007533 (1961-11-01), Hill
patent: 3357117 (1967-12-01), Petersen
patent: 3773114 (1973-11-01), Griffin
patent: 3792736 (1974-02-01), Gondeiro
patent: 4115021 (1978-09-01), Loch
patent: 4190115 (1980-02-01), Couture
patent: 4195697 (1980-04-01), Griffin
patent: 4779686 (1988-10-01), Ryan
patent: 5579852 (1996-12-01), Woodward et al.
patent: 5711378 (1998-01-01), Yeager
patent: 5941318 (1999-08-01), Bergen
Novosad Christopher J.
Shields H. Gordon
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