| CPC G07D 3/128 (2013.01) [G07D 5/02 (2013.01); G07D 2205/00 (2013.01)] | 14 Claims | 

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               1. A twist-lock debris blade and cone comprising: 
            a post; and 
                a retaining washer interface, 
                wherein the post comprises a lower portion and one or more retaining flanges located near a bottom of the post extending outward from the lower portion, and 
                wherein the retaining washer interface comprises: 
              a central opening; 
                  one or more retaining flange unlocked profiles; 
                  one or more retaining flange locking profiles or surfaces; and 
                  one or more cam profiles or surfaces between the one or more retaining flange unlocked profiles and the one or more retaining flange locking profiles or surfaces. 
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