Driving Force Member
AssigneeGcc IP Pty Ltd
InventorSamuel Wai Keung Tsui
Life of this patent
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Abstract
A driving force member for receiving rotational driving force includes a base portion, a projection portion including three planar surfaces, the three planar surfaces arranged such that if they were extended and viewed in cross section perpendicular to the axis of the projection, they would intersect at 120 degrees in the form of an equilateral triangle, the three planar surfaces corresponding to a partial length of each side of the triangle respectively and offset from the center of each respective side of the triangle, and three joining portions joining each of the three planar surfaces, the three joining portions lying entirely within the equilateral triangle.
Claims24
A driving force member for receiving rotational driving force, comprising:
- a base portion;
- a projection portion comprising three planar surfaces, the three planar surfaces arranged such that if they were extended and viewed in cross section perpendicular to the axis of the projection, they would intersect at 120 degrees in the form of an equilateral triangle, the three planar surfaces corresponding to a partial length of each side of the triangle respectively and offset from the center of each respective side of the triangle;
- and
- three joining portions joining each of the three planar surfaces, the three joining portions lying entirely within the equilateral triangle.
A driving force member according to claim 5, wherein the three joining portions are either substantially concave, substantially convex or substantially straight.
A photosensitive drum, including a driving force member for receiving rotational driving force, the driving force member being located at one longitudinal end of the photosensitive drum, and the driving force member comprising:
- a base portion;
- a projection portion comprising three planar surfaces, the three planar surfaces arranged such that if they were extended and viewed in cross section perpendicular to the axis of the projection, they would intersect at 120 degrees in the form of an equilateral triangle, the three planar surfaces corresponding to a partial length of each side of the triangle respectively and offset from the center of each respective side of the triangle;
- and
- three joining portions joining each of the three planar surfaces, the three joining portions lying entirely within the equilateral triangle.
A driving force member for receiving rotational driving force, comprising:
- a core portion;
- three lugs projecting from the core portion, each of the three lugs comprising a planar surface, the three planar surfaces arranged such that if they were extended and viewed in cross section perpendicular to the axis of the projection, they would intersect at 120 degrees in the form of an equilateral triangle, the three planar surfaces corresponding to a partial length of each side of the triangle respectively and offset from the center of each respective side of the triangle;
- and
- three joining portions joining each of the three planar surfaces, the three joining portions lying entirely within the equilateral triangle.
Dependencies are inferred from the claim text.