Sprocket and locking mechanism for trailer tarp box

A trailer tarp system, comprising:

• a shaft portion that is part of or coupled to a tarp shaft about which a tarp is rolled;
• a sprocket having an axial bore fitting over the shaft portion, the sprocket including
• a plurality of locking teeth projecting around a periphery of one end of the sprocket, and
• a locking lever pivotably mounted to control movement of at least one locking structure into and out of a space between two of the locking teeth;
• and
• a housing cover over the shaft portion, the sprocket, and the plurality of locking teeth, wherein a portion of the sprocket extends through a hole in the housing cover,
• wherein the portion of the sprocket extending through the hole in the housing cover is configured to engage a crank drive.

A trailer tarp system, comprising:

• a shaft portion that is part of or coupled to a tarp shaft about which a tarp is rolled;
• a sprocket having an axial bore fitting over the shaft portion, the sprocket including
• a plurality of locking teeth projecting around a periphery of one end of the sprocket, and
• a locking lever pivotably mounted to control movement of at least one locking structure into and out of a space between two of the locking teeth;
• a housing cover over the shaft portion, the sprocket, and the plurality of locking teeth, wherein a portion of the sprocket extends through a hole in the housing cover;
• a collar fitting over the portion of the sprocket extending through the hole in the housing cover;
• and
• a crank rod secured to the collar.

A trailer tarp system, comprising:

• a shaft portion that is part of or coupled to a tarp shaft about which a tarp is rolled;
• a sprocket having an axial bore fitting over the shaft portion, the sprocket including
• a plurality of locking teeth projecting around a periphery of one end of the sprocket, and
• a locking lever pivotably mounted to control movement of at least one locking structure into and out of a space between two of the locking teeth;
• a housing cover over the shaft portion, the sprocket, and the plurality of locking teeth, wherein a portion of the sprocket extends through a hole in the housing cover;
• a planetary gear fitting over the portion of the sprocket extending through the hole in the housing cover;
• and
• a drive gear engaged with the planetary gear, the drive gear including a rachet drive hole.