Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent
1975-12-18
1977-08-16
Gerin, Leonard H.
Machine element or mechanism
Gearing
Toothed gear and recirculated unconnected elements
74243R, 74231C, F16G 128, F16H 5530, F16H 700
Patent
active
040417891
ABSTRACT:
A belt drive including a toothed power transmission belt and toothed pulley or pulleys operating in conjunction and each having an improved tooth configuration. Each belt tooth as viewed in longitudinal cross-section includes stress relieving portions or fillets adjoining the opposite sides of the base of the tooth. Each fillet has an outer perimeter or outer surface area which is at least 30% of one half of the total outer perimeter or outer surface area of the belt tooth. The pulley in cross section includes an outermost portion having an arcuate outer perimeter formed by the arc of at least one circle whose center point lies within the pulley tooth with one half of the arcuate outer perimeter or outer surface area being at least 30% of one half of the total outer perimeter or outer surface area of the tooth.
REFERENCES:
patent: 3313166 (1967-04-01), Elster
patent: 3756091 (1973-09-01), Miller
patent: 3977265 (1976-08-01), Worley et al.
Brunner F. W.
Gerin Leonard H.
The Goodyear Tire & Rubber Company
Yaist R. P.
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