US2010031583A1PendingUtilityA1

Wind driven device for preventing the clogging of a downspout

Assignee: CHANG TUNG JUNGPriority: Aug 6, 2008Filed: Aug 6, 2008Published: Feb 11, 2010
Est. expiryAug 6, 2028(~2 yrs left)· nominal 20-yr term from priority
Inventors:Tung-Jung Chang
E04D 13/08E04D 2013/0866
50
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Claims

Abstract

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.

Claims

exact text as granted — not AI-modified
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.

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