Excavating – Snow or ice removing or grooming by portable device – With specific means to facilitate connection to – or...
Reexamination Certificate
1999-01-11
2001-03-20
Pezzuto, Robert E. (Department: 3671)
Excavating
Snow or ice removing or grooming by portable device
With specific means to facilitate connection to, or...
C037S266000
Reexamination Certificate
active
06202328
ABSTRACT:
BACKGROUND OF THE INVENTION
Various snowplows have been developed and marketed for attaching to vehicles such as cars and trucks. Typically, such plows are attached to the front of the vehicle, and are time-consuming to attach in that such plows: (a) are heavy and therefore require attachments to firm supports such as a vehicle's frame, (b) include electrical components such as motors, winches, and the like for raising and lowering the snowplow blade. Accordingly, a user must also electrically connect the snowplow to the electrical system of the vehicle in order to properly operate the snowplow.
Snowplows have also been developed for being towed behind a vehicle as well. In general, these snowplows have the same drawbacks as mentioned above for the snowplows intended to be attached to the front of a vehicle.
Accordingly, it would be desirable to have a snowplow that relieves a user of much of the burden of attaching and detaching snowplows from a vehicle typically used for other purposes than plowing snow. Thus, it would be desirable to have a snowplow that is also relatively lightweight, does not require electrical vehicle modifications and/or electrical attachments, and that is straight forward to both attach and detach to a vehicle.
SUMMARY OF THE INVENTION
The present invention is a lightweight, cost-effective snowplow that is easily attached to and detached from a vehicle. The snowplow of the present invention attaches to the rear of a vehicle for plowing while being towed. In one embodiment, the snowplow attaches to a vehicle's trailer hitch. An important aspect of the present invention is that the snowplow blade is capable of manually raised and lowered. Further, the raising and lowering of the blade are performed without undue stress on a user since leverage can be applied to these tasks by applying manual force to a fulcrum provided by the present invention for pivoting the snowplow blade between a raised position in which plowing is not performed, and a lowered position in which plowing is performed.
Additionally, it is an aspect of the present invention that the blade attachment for attaching the blade to the snowplow attaches to the rear or non-plowing side of the blade. This provides an added advantage in that the snow being plowed can more straightforwardly flow to the edges of the blade rather than accumulating on any blade attachments projecting from the plowing side of the blade. Thus, the present invention allows the plowed snow to flow to the edges of the blade without interruption. Accordingly, this aspect of the invention allows for less strain to be put on the snowplow and accordingly, makes it easier for the snowplow to be towed.
It is another aspect of the present invention that the snowplow blade may be attached to the snowplow in a manner that allows the blade to effectively plow snow over uneven terrain wherein one end of the snowplow blade is higher than the other end of the blade. That is, the blade is capable of adapting to ground surface undulations that can cause the blade to be at an angle to the horizontal.
Other aspects and features of the present invention will become evident from the detailed description and accompanying drawings provided herein.
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Mammen Nathan
Pezzuto Robert E.
Sheridan & Ross P.C.
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