Invention Grant
- Patent Title: Linear actuator
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Application No.: US15046194Application Date: 2016-02-17
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Publication No.: US09608506B2Publication Date: 2017-03-28
- Inventor: Brett W. Degner , Bradley J. Hamel , David H. Narajowski , Jonah A. Harley , Michael E. Leclerc , Patrick Kessler , Samuel Bruce Weiss , Storrs T. Hoen
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Brownstein Hyatt Farber Schreck, LLP
- Main IPC: H02K41/035
- IPC: H02K41/035 ; H02K7/08 ; G08B6/00 ; H04M19/04 ; H02K33/02

Abstract:
Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.
Public/Granted literature
- US20160172953A1 Linear Actuator Public/Granted day:2016-06-16
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