User Detachable Cover

Abstract

An apparatus is disclosed with a cover and the body part. The cover has two cover side walls with inner and outer surfaces, configured to cover a portion of the apparatus. Snap-on attachment receptacles are on inner surfaces of the cover side walls configured to enable a user to attach the cover to a body part by pushing the cover onto the body part. The body part has a body with an external surface having two sides and snap-on attachment protrusion members on the two sides configured to engage with snap-on attachment receptacles of a cover when attached by a user to cover the body part.

What is claimed is: 
     
         1 . A cover, comprising:
 two side walls with inner and outer surfaces, configured to cover a portion of an apparatus; and   snap-on attachment receptacles on inner surfaces of the side walls configured to enable a user to attach the cover to a body part by pushing the cover onto the body part.   
     
     
         2 . The cover of  claim 1 , further comprising a face wall and the side walls may be at different edges of the face wall. 
     
     
         3 . The cover of  claim 1 , wherein the side walls reside at opposite edges of the face wall. 
     
     
         4 . The cover of  claim 1 , wherein the side walls form all walls of the cover. 
     
     
         5 . The cover of  claim 1 , wherein the side walls are perpendicularly connected. 
     
     
         6 . The cover of  claim 1 , wherein the cover comprises four side walls. 
     
     
         7 . The cover of  claim 1 , wherein the snap-on attachment receptacles comprise grooves, holes and/or concave forms on the inner surfaces of the side walls. 
     
     
         8 . The cover of  claim 1 , wherein the side walls have rounded cross-section at the snap-on attachment receptacles such that the internal surface of the side walls inherently forms the snap-on attachment receptacles. 
     
     
         9 . An body part comprising:
 a body with an external surface having two sides; and   snap-on attachment protrusion members on the two sides configured to engage with snap-on attachment receptacles of a cover when attached to cover the body part.   
     
     
         10 . The body part of  claim 9 , wherein the snap-on attachment protrusion members are resiliently biased to press against the snap-on attachment receptacles when the cover is attached to the body part. 
     
     
         11 . The body part of  claim 9 , wherein the snap-on attachment protrusion members on one side wall are fixed. 
     
     
         12 . The body part of  claim 10 , wherein the resiliently biased snap-on attachment protrusion members are configured to cause tension in the cover against the fixed snap-on attachment protrusion members. 
     
     
         13 . The body part of  claim 9 , wherein the snap-on attachment protrusion members are configured to contact the cover by rotatable balls or cylinders. 
     
     
         14 . The body part of  claim 13 , wherein the balls or cylinders are configured to rotate when the cover is attached to the body part. 
     
     
         15 . The body part of  claim 9 , wherein the snap-on attachment protrusion members are configured to form, when engaged against the snap-on attachment protrusion receptacles, a force that pulls the cover against the body so as to remove play between the body and the cover. 
     
     
         16 . An apparatus comprising a cover and the body part, wherein the cover comprises:
 two cover side walls with inner and outer surfaces, configured to cover a portion of the apparatus; and   snap-on attachment receptacles on inner surfaces of the cover side walls configured to enable a user to attach the cover to a body part by pushing the cover onto the body part;   and the body part comprises:   a body with an external surface having two sides; and   snap-on attachment protrusion members on the two sides configured to engage with snap-on attachment receptacles of a cover when attached by a user to cover the body part.   
     
     
         17 . The apparatus of  claim 16 , wherein the snap-on attachment receptacles comprise grooves, holes and/or concave forms on the inner surfaces of the cover side walls. 
     
     
         18 . The apparatus of  claim 16 , wherein the snap-on attachment protrusion members are resiliently biased to press against the snap-on attachment receptacles when the cover is attached to the body part. 
     
     
         19 . The apparatus of  claim 16 , wherein the resiliently biased snap-on attachment protrusion members are configured to cause tension in the cover against the fixed snap-on attachment protrusion members. 
     
     
         20 . The apparatus of  claim 16 , wherein the snap-on attachment protrusion members are configured to contact the cover by rotatable balls or cylinders.