Browse Prior Art Database

Zero Backlash Gear

IP.com Disclosure Number: IPCOM000079309D
Original Publication Date: 1973-Jun-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Schopp, RE: AUTHOR

Abstract

The zero-backlash gear 10 is so constructed that it has substantially no backlash with respect to a mating gear 12.

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Zero Backlash Gear

The zero-backlash gear 10 is so constructed that it has substantially no backlash with respect to a mating gear 12.

The gear 12 is the driver gear while the gear 10 is the driven gear of the gear pair. Gear 10 includes an outer rim 14 having the gear teeth 16 formed in it, an inner hub portion 18, and a plurality of slantwise or biased webs 20 connecting rim 14 with hub portion 18. Shafts 22 and 24 extend through and are keyed with respect to the gears 10 and 12, respectively.

Gear 10 is molded from thermoplastic material, and webs 20 are resilient so that the teeth 16 are pressed firmly into interengagement with the teeth on the drive gear 12. Gear 10 is driven in the direction A; and webs 20 extended generally in this same direction from the outer rim 14 to the inner hub portion 18, so that webs 20 support the torsional load derived from gear 12 in driving gear 10 in the direction A. Webs 20 yield radially of gear 10 to compensate for tooth interference, while maintaining substantially zero backlash between gears 10 and
12.

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