Helical gear sets

Details Helical gear sets Helical gear sets

2011-06-21

2011-06-21

Le, David D (Department: 3655)

Machine element or mechanism

Gearing

Reexamination Certificate

active

07963190

ABSTRACT:
A gear set for a transmission for use in limited space and capable of transmitting relatively large amounts of power with a small diameter of the gear sets, comprising a series of helical gear elements having stub shafts extending laterally from either side thereof, each of the stub shafts having teeth formed at the remote ends thereof and a central axial bore extending through each gear element and a coupler adapted to engage the teeth on adjacent gear elements join gear elements in driving contact. The gear set having a relatively large effective diameter, and a tension rail extending through the axial bore in the gear elements with retainers at either end of the tension rail so as to effectively permit limited axial movement along the tension rail while preventing inadvertent disengagement.

REFERENCES:
patent: 4242920 (1981-01-01), Sigg
patent: 7076875 (2006-07-01), Puetz et al.
patent: 2006/0048601 (2006-03-01), Chiao

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