F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
26/174, 74/216
F16H 55/17 (2006.01) B21D 53/28 (2006.01) B29D 15/00 (2006.01) F16H 55/06 (2006.01)
Patent
CA 1192765
COMPOSITE METAL-PLASTIC GEAR AND METHOD FOR MAKING SAME ABSTRACT OF THE DISCLOSURE A composite metal-plastic gear (20,120) and a method for making the gear disclosed utilize a thin- wall outer metal sleeve (22) into which involute teeth (24) are tool pressed. Thermosetting plastic (32,122) is molded in situ within the sleeve (22) between side walls (26) of the teeth (24) to provide reinforcement. Roll finishing of the sleeve (22) prior to the plastic molding finishes face and flank surfaces (34,36) on the side walls (26) of the teeth (24). Both inward and outward tool pressing of the teeth (24) can be utilized. A metallic central hub (40,124) of the gear (20,120) is positioned within the sleeve (22) prior to the plastic molding. In one gear embodiment (20) the hub (40) is engaged by an end wall (42) of the sleeve (22), while in another gear embodiment (120) the end wall (42) is spaced out- wardly from the hub (124). The thermosetting plastic (22,122) adhesively bonds to the toothed sleeve (22) and hub (40,124) and includes carbon fibers that strengthen the plastic and the support provided to the sleeve teeth (24).
410495
Anderson-Cook Inc.
Smart & Biggar
LandOfFree
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