Title:
ROTARY ACTUATOR FOR ENERGY EFFICIENT ICE CUBE DISPENSER DOOR SYSTEM AND ICE|DISPENSER DOOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/012730
Kind Code:
A3
Abstract:
The invention relates to an electrical rotary actuator suitable for use in a refrigerator ice-dispensing door. The actuator provides a rotating shaft driven by a DC permanent magnet motor through a gear train and subject to a returning force of an internal spring. The gear train communicates with a switch to reduce current to the motor when a limit of travel is reached and a shunting path is provided around the motor to produce generative braking when power is removed from the motor and the actuator rotates backward to its initial position. The invention also relates to an ice dispenser door system.
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Inventors:
HAPKE, Kenyon A. (3600 West Lake AvenueGlenview, Illinois, 60026, US)
Application Number:
US2012/046689
Publication Date:
November 28, 2013
Filing Date:
July 13, 2012
Export Citation:
Assignee:
ILLINOIS TOOL WORKS INC. (3600 West Lake Avenue, Glenview, Illinois, 60026, US)
HAPKE, Kenyon A. (3600 West Lake AvenueGlenview, Illinois, 60026, US)
HAPKE, Kenyon A. (3600 West Lake AvenueGlenview, Illinois, 60026, US)
International Classes:
F25C5/00; H02K7/10; H02K7/106; H02K7/116; H02K11/00; H02K26/00
Foreign References:
| US20060144075A1 | 2006-07-06 | |||
| US20100132835A1 | 2010-06-03 |
Attorney, Agent or Firm:
HAUPTMAN, Benjamin J. (LOWE HAUPTMAN HAM & BERNER, LLP1700 Diagonal Road,Suite 30, Alexandria Virginia, 22314, US)
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