Mold type plastic gear

Details Mold type plastic gear Mold type plastic gear

1998-04-02

2000-06-06

Bucci, David A.

Machine element or mechanism

Gearing

Rotary bodies

74DIG10, 2643281, B29D 1500, F16H 5500

Patent

active

060704845

ABSTRACT:
A molded plastic circular gear which has removed its wall portions on the inside of a tooth root of its circumferential gear teeth portion. The gear has a circular rim formed at a distance from and on an inside of the tooth root. The gear is further formed by injection of resin through gates located in the web portion of the inside of the rim. The gear is further characterized in that the thickness in the axial direction of the web portion of the inside of the rim is made larger than that of the web portion on the outside of the rim.

REFERENCES:
patent: 4793659 (1988-12-01), Oleff et al.
patent: 5254304 (1993-10-01), Adachi et al.
Edward M. Hagerman, Weld-line Fracture in Molded Parts, Plastics Engineering, pp. 67-69, Oct. 1973.

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