Geared drive assemblies
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United States of America Patent
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Mar 13, 2018
Grant Date -
Apr 28, 2016
app pub date -
Apr 1, 2014
filing date -
Apr 1, 2013
priority date (Note) -
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Abstract
A geared drive assembly (10) comprising the driven gear (12) arranged to mesh with the driving gear (14) and a rotary actuator operatively connected to the driving gear (14) by the pulley belt (22) engaging with an first pulley wheel (18) of the rotary actuator and a second pulley wheel (24) rigidly and coaxially connected to the driving gear (14), wherein the pulley belt (22) comprises first (26) and second (28) pulley belt portions extending between the first (18) and second (24) pulley wheels, wherein the first pulley belt portion (26) is maintained, in use, under tension, and wherein the second pulley belt portion (28) is slack, in use. Advantages of the invention, compared with known anti-backlash gearboxes, include: significant weight reductions, reduced complexity, reduced drag, smaller motor sizes, reduced part count, reduced play and backlash. Embodiments of the invention may advantageously provide a lightweight, simple anti-backlash gearing assembly that are particularly suited for use in motorized camera mounts, e.g. pan/tilt heads.
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