Debris ejecting sprocket and system
A debris ejecting sprocket comprising a body ( 100 ), a plurality of teeth ( 101 ) projecting from the body, a plurality of grooves ( 102 ) in alternating arrangement with the teeth, each groove receives a belt tooth, a cavity ( 103 ) disposed radially inward from each groove and communicating with the groove, the cavity further comprises a land ( 111 ) for supporting the belt, the land disposed between the groove and the cavity, and the cavity comprising a surface ( 104 ) disposed at an angle (θ) with respect to an axial direction (A-A).
1. A debris ejecting sprocket comprising:
a body ( 100 );
a plurality of teeth ( 101 ) projecting from the body;
a plurality of grooves ( 102 ) in alternating arrangement with the teeth, each groove receives a belt tooth;
a cavity ( 103 ) disposed radially inward from each groove and communicating with the groove, the cavity having an opening on each side of the sprocket;
the cavity further comprises a land ( 111 ) for supporting the belt tooth, the land disposed between the groove and the cavity; and
the cavity comprising a surface ( 104 ) disposed at an angle (θ) with respect to an axial direction (A-A), the surface further comprises a frustoconical form.
2. The debris ejecting sprocket as in claim 1 , wherein the cavity further comprises an open end for ejecting debris from the cavity.
3. The debris ejecting sprocket as in claim 1 wherein the angle (θ) is in the range of greater than 0° up to approximately 20°.
4. A belt drive comprising:
a toothed belt;
a sprocket comprising a body;
a plurality of teeth projecting from the body for engaging the toothed belt;
a plurality of grooves, each groove receives a belt tooth;
a cavity disposed radially inward from each groove and communicating with the groove, the cavity having an opening on each side of the sprocket, the cavity having a surface having a gradient with respect to an axial direction for ejecting debris, the surface comprises a frustoconical form.
5. The belt drive system as in claim 4 , wherein the cavity further comprises an opening to each side of the sprocket.
6. The belt drive system as in claim 4 , wherein the surface comprises a frustoconical form.
7. The belt drive system as in claim 4 , wherein the surface is continuous between each tooth.
8. The belt drive system as in claim 4 further comprising a landing such that said belt tooth cannot enter the cavity.
9. A sprocket comprising:
a body;
a plurality of teeth projecting radially from the body for engaging a belt;
a plurality of grooves interposed between the teeth, each groove receives a belt tooth;
a cavity disposed radially inward from each groove and communicating with the groove, the cavity having an opening on each side of the sprocket;
the cavity having a surface, the surface having a frustoconical form aligned with respect to an axial direction for ejecting debris, the surface having a gradient with respect to an axial direction;
the cavity having an open end on each side of the sprocket; and
the cavity further comprising a land for supporting a belt, the land disposed between the groove and the cavity.