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Spiral Crown Wheel and Circular Toothed Pinion

IP.com Disclosure Number: IPCOM000091866D
Original Publication Date: 1968-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Crutcher, BT: AUTHOR [+2]

Abstract

This spiral crown wheel and circular toothed pinion transmits rotational motion from the wheel to the pinion. The rotational relationship of the pinion to the crown wheel is unaffected by the motion of the pinion swinging within the limit of tooth contact about the axis of its mounting structure. Spiral crown wheel 1 rotates about its axis through angle X, thus driving circular toothed pinion 2, causing it to rotate through angle Y. Pinion 2 and its mounting structure oscillate through angle Z about the center of oscillation, axis 3. The profiles on the pinion teeth are involute and the tooth axis lie along circular arcs whose radii equal the pinion oscillating radius 4.

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Spiral Crown Wheel and Circular Toothed Pinion

This spiral crown wheel and circular toothed pinion transmits rotational motion from the wheel to the pinion. The rotational relationship of the pinion to the crown wheel is unaffected by the motion of the pinion swinging within the limit of tooth contact about the axis of its mounting structure. Spiral crown wheel 1 rotates about its axis through angle X, thus driving circular toothed pinion 2, causing it to rotate through angle Y. Pinion 2 and its mounting structure oscillate through angle Z about the center of oscillation, axis 3. The profiles on the pinion teeth are involute and the tooth axis lie along circular arcs whose radii equal the pinion oscillating radius 4. Pinion 2 generates the teeth of wheel 1 as the pinion and its mounting structure oscillate about axis 3 and as the pinion rotates about its own axis in a linear angular relationship with such wheel 1 rotation. Area contact under load exists between mating teeth of the gears. Full access gearing can be used for quietness of operation without sacrifice of contact ratio.

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