Mug with trapezoid-shaped protrusions

Abstract

Carl Cetera and Christon G. Suess have invented a new shaker mug. The cap of the shaker mug comprises a set of trapezoid-shaped protrusions around the side of the cap. This makes it easier for the user to unscrew and screw on the cap.

We claim as follows: 
     
         1 . A mug comprising:
 (a) a hollow bottom, said comprising male threading on a top end of said bottom; and   (b) a spouted cap, said spouted cap comprising an inside and an outside, wherein said inside comprises female threading that matches the male threading of the top and said outside comprises a bottom end, said bottom end comprising a perimeter and a plurality of trapezoid-shaped protrusions evenly spaced around the entirety of said perimeter.   
     
     
         2 . The mug of  claim 1 , wherein each protrusion of said plurality of trapezoid-shaped protrusions has a depth and that depth is between 3.3 to 3.5 millimeters. 
     
     
         3 . The mug of  claim 2 , wherein the protrusions of said plurality of trapezoid-shaped protrusions are spaced apart by between 6.3 to 6.6 millimeters. 
     
     
         4 . The mug of  claim 3 , wherein each protrusion of said plurality of trapezoid-shaped protrusions has a height that is approximately 12 millimeters. 
     
     
         5 . A mug comprising:
 (a) a hollow bottom, said comprising male threading on a top end of said bottom; and   (b) a spouted cap, said spouted cap comprising an inside and an outside, wherein said inside comprises female threading that matches the male threading of the top and said outside comprises a bottom end, said bottom end comprising a perimeter and a plurality of substantially rectangular protrusions evenly spaced around the entirety of said perimeter, wherein each protrusion of said plurality of substantially rectangular protrusions has a depth and that depth is between 3.3 to 3.5 millimeters.   
     
     
         6 . The mug of  claim 5 , wherein the protrusions of said plurality of substantially rectangular protrusions are spaced apart by between 6.3 to 6.6 millimeters. 
     
     
         7 . The mug of  claim 6 , wherein each protrusion of said plurality of substantially rectangular protrusions has a height that is approximately 12 millimeters.