WIND DRIVEN DEVICE FOR PREVENTING THE CLOGGING OF A DOWNSPOUT
A wind driven device for preventing the accumulation of debris in a gutter at a mouth of a downspout comprises a drive shaft coupled to the impeller and a bit is disposed at a distal end of the drive shaft. Means for mounting the device on the gutter ensures that the bit is disposed above and spaced-apart from the mouth of the downspout.
1. Field of the Invention
The present invention relates to a device for preventing the clogging of a downspout and, in particular, to a wind driven device for preventing the accumulation of leaves and other debris at a mouth of the downspout.
2. Description of the Related Art
The accumulation of leaves and other debris in a gutter restricts, and may even prevent, the flow of water down the downspout to the ground. This blockage may cause the gutter to overflow resulting in uncontrolled runoff down the side of the building. It is accordingly desirable to maintain the gutter, and in particular the downspout, clear of leaves and other debris.
Numerous devices have been developed to prevent the clogging of downspouts. The simplest of these devices comprises a wire mesh which is placed over the mouth of the downspout. The wire mesh prevents leaves and other debris from entering and clogging the downspout but allows water to flow into the downspout. However, leaves and other debris may still accumulate on the wire mesh, or even become entangled in the wire mesh, thereby blocking the flow of water into the downspout.
Another type of device for preventing the clogging of a downspout comprises an auger which extends into the downspout. An example of such a device is disclosed in U.S. Pat. No. 3,638,369 to Albrecht issued Feb. 1, 1972. In the device disclosed by Albrecht an auger is coupled to a wind driven impeller. Wind drives the impeller which in turn imparts rotary motion to the auger. The auger drives leaves and other debris down the downspout to prevent clogging. However, in situations where there is a large amount of foreign matter in the downspout, the auger may jam and the downspout may still become clogged.
SUMMARY OF THE INVENTIONIt is an object of the present invention to provide an improved device for preventing the clogging of a downspout which overcomes the above-mentioned shortcomings of the prior art devices.
Accordingly, there is provided a wind driven device for preventing the accumulation of debris in a gutter at a mouth of a downspout. A drive shaft is coupled to the impeller and a bit is disposed on the drive shaft. Means for mounting the device on the gutter ensures that the bit is disposed above the mouth of the downspout.
In a preferred embodiment, the device comprises an impeller with a substantially rounded shape formed by a plurality of arcuate impeller blades which extend between a pair of support members. A drive shaft coupled to the impeller and an annular bit slidable along the drive shaft. The bit has a jagged cutting edge and an elongate cutting blade. Means for mounting the device on the gutter ensures that the annular bit is disposed above the mouth of the downspout.
The invention will be more readily understood from the following description of a preferred embodiment thereof given, by way of example only, with reference to the accompanying drawings, in which:
Referring to the drawings and first to
The device 10 is best shown in
The drive shaft 28 is best shown in
The bit 26 is best shown in
Referring back to
As best shown in
The impeller 30 may be reinforced with a frame. As shown in
Referring back to
Rotation of the bit 26 causes turbulence in accumulated water and debris which draws leaves and other debris in the gutter 12 towards the bit 26. The cutting blades 52 and 54 together with the cutting edges 56 of the bit 26 cut the leaves and other debris into small pieces which are more easily carried by flow down the downspout without clogging the downspout. The turbulence also acts to keep the opening 22, or downspout mount, clear of leaves and other debris to allow for unimpeded flow through the opening 22. Also, as best shown in
It will be understood by a person skilled in the art that the terms “top”, “bottom”, “above”, “below” and “upwardly”, and “downwardly” as used herein are used in relation to positions as shown in
It will further be understood by a person skilled in the art that many of the details provided above are by way of example only and are not intended to limit the scope of invention, which is determined with reference to following claims.
Claims
1. A wind driven device for preventing the accumulation of debris in a gutter at a mouth of a downspout, the device comprising:
- an impeller;
- a drive shaft coupled to the impeller;
- a bit disposed on the drive shaft; and
- means for mounting the device on the gutter so that the bit is disposed above the mouth of the downspout.
2. A wind driven device for preventing the accumulation of debris in a gutter at a mouth of a downspout, the device comprising:
- an impeller;
- a drive shaft coupled to the impeller;
- an annular bit slidable along the drive shaft; and
- means for mounting the device on the gutter so that the annular bit is disposed above the mouth of the downspout.
3. The device as claimed in claim 2 wherein the impeller has a substantially rounded shape and is formed by a plurality of arcuate impeller blades which extend between a pair of support members.
4. The device as claimed in claim 2 wherein the annular bit has a jagged cutting edge.
5. The device as claimed in claim 2 wherein the annular bit has an elongate cutting blade.
6. A wind driven device for preventing the accumulation of debris in a gutter at a mouth of a downspout, the device comprising:
- an impeller having a substantially rounded shape and being formed by a plurality of arcuate impeller blades which extend between a pair of support members;
- a drive shaft coupled to the impeller;
- an annular bit slidable along the drive shaft, the bit having a jagged cutting edge and an elongate cutting blade; and
- means for mounting the device on the gutter so that the annular bit is disposed above the mouth of the downspout.
Type: Application
Filed: Aug 6, 2008
Publication Date: Feb 11, 2010
Inventor: Tung Jung Chang (Surrey)
Application Number: 12/186,752
International Classification: E04D 13/08 (20060101);