Multiple-contact type W-N gear
AssigneeKabushiki Kaisha Hasegawa Haguruma
InventorShoichi Ishikawa
Life of this patent
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Abstract
A single-flank or double-flank type W-N gear each of the convex or concave tooth flanks of which is formed of a plurality of circular arcs (which participate in meshing engagement and) the centers of which (arcs) are arranged on the pitch line or in the vicinity thereof in spaced-apart relation to each other and an intermediate curved line or lines interconnecting the circular arcs. Meshing contact at any instant is obtained at different locations mutually spaced in the direction of tooth trace and stress concentration at the root of the teeth is minimized.
Claims14
A pair of W-N gears in which the tooth profile of one gear is formed of a concave tooth flank and the tooth profile of a mating gear is formed of a convex flank, characterized in that each profile of said concave and convex tooth flanks, on a transverse or normal plane, is formed of substantially a plurality of circular arcs which are the main profiles in meshing, and intermediate curved lines interconnecting said circular arcs, the centers of said circular arcs being arranged on the pitch line or on points adjacent thereto.
A pair of W-N gears in which the tooth profiles of each gear are formed of a concave and a convex flank, characterized in that the tooth profile of the said concave flank of one gear and the said convex flank of the mating gear, on a transverse or normal plane, are formed of substantially a plurality of circular arcs that are the main profiles in meshing, and intermediate curved lines interconnecting said circular arcs, the centers of said circular arcs being arranged on the pitch line or on points adjacent thereto.
A pair of W-N gears in which the tooth profiles of each gear are formed of a concave and a convex flanks, characterized in that the tooth profile of said each flank, on a transverse or normal plane, is formed of substantially a plurality of circular arcs that are the main profiles in meshing, and intermediate curved lines interconnecting said circular arcs, the centers of said circular arcs being arranged on the pitch line or on points adjacent thereto.
Dependencies are inferred from the claim text.