Abstract: A high-precision pinion gear comprises a core formed of a plurality of stampings bonded together in axial alignment and having a plurality of relatively low precision teeth formed thereon. A thin plastic layer bonded to the circumference of the core provides a precision plastic surface on which the teeth of the pinion gear are formed with high precision.
Abstract: A spur gear formed of a laminated stack of axially thin spur gear elements having straight axially extending teeth identical involute tooth profiles and with means for securing them together in coaxial relation with stepped increments of phase between them producing a gear having a helical tooth pattern distinguished by the smoothness and lack of vibration of a helical gear while nevertheless avoiding the end thrust problems and the variations in phase which can occur with helical gearing.
Type:
Grant
Filed:
April 28, 1975
Date of Patent:
November 2, 1976
Assignee:
Roland Offsetmaschinenfabrik Faber & Schleicher AG
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