Title:
METHODS AND APPARATUS FOR MINIMIZING BACKLASH IN A PLANETARY GEAR MECHANISM
Document Type and Number:
WIPO Patent Application WO2005106285
Kind Code:
A3
Abstract:
A planetary gear system (10) includes a planetary gear assembly (14) having a first planetary gear (28), a second planetary gear (32) rotatable relative to the first planetary gear, and a torquing mechanism (16). The torquing mechanism generates a torsional spring force of the planetary gear assembly to cause the first planetary gear to rotate along a first direction and the second planetary gear to rotate along a second direction, opposite to the first direction. As a result, the teeth of the first planetary gear contact teeth of a corresponding first stationary ring gear (18-1) and the teeth of the second planetary gear contact teeth of a corresponding second stationary ring gear (18-2) . The torquing mechanism, along with the configuration of the planetary gear assembly, minimizes or eliminates the presence of gaps between the contacting teeth of the planetary assembly and the stationary gear rings (18) and minimizes backlash within the planetary gear system.
Inventors:
LUMPKIN TED (US)
WOLF TOM (US)
WOLF TOM (US)
Application Number:
PCT/US2005/008120
Publication Date:
December 01, 2005
Filing Date:
March 11, 2005
Export Citation:
Assignee:
HR TEXTRON INC (US)
LUMPKIN TED (US)
WOLF TOM (US)
LUMPKIN TED (US)
WOLF TOM (US)
International Classes:
B64C13/28; B64C13/34; F16H1/28; F16H55/18; (IPC1-7): F16H1/28; B64C13/28
Foreign References:
| EP0826902A2 | 1998-03-04 | |||
| GB2377740A | 2003-01-22 | |||
| US20030073537A1 | 2003-04-17 | |||
| US2868033A | 1959-01-13 | |||
| US3138035A | 1964-06-23 | |||
| US5240462A | 1993-08-31 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 014, no. 364 (M - 1007) 7 August 1990 (1990-08-07)
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