Manufacturing method of tooth part, tooth part, and processing device of tooth part
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 27, 2022
Grant Date -
Dec 17, 2020
app pub date -
Jan 25, 2019
filing date -
Jan 31, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The tooth part includes: a tubular portion having an inner tooth portion formed on an inner peripheral surface and an outer tooth portion formed on an outer peripheral surface; a plurality of inner peripheral wall portions that each extend in an axial direction of the tubular portion and form a tooth tip portion of the inner tooth portion and a tooth bottom portion of the outer tooth portion; a plurality of outer peripheral wall portions that each extend in the axial direction and form a tooth bottom portion of the inner tooth portion and a tooth tip portion of the outer tooth portion; and an annular rib that is joined to the outer peripheral wall portions and that extends in an annular shape on an open end side with respect to the inner peripheral wall portions in the axial direction and radially outward from the inner peripheral wall portions, at an open end of the tubular portion.
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