The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2020
Filed:
Oct. 30, 2017
Apple Inc., Cupertino, CA (US);
Patrick Kessler, San Francisco, CA (US);
Dhaval Chandrakant Patel, San Jose, CA (US);
Jonah A. Harley, Los Gatos, CA (US);
Brett W. Degner, Menlo Park, CA (US);
Nicholas Alan Rundle, San Jose, CA (US);
Peteris K. Augenbergs, Woodside, CA (US);
Nicholaus Lubinski, San Francisco, CA (US);
Kenneth L Staton, San Carlos, CA (US);
Omar Sze Leung, Palo Alto, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A haptic electromagnetic actuator for track pad is provided. The actuator includes an array of electromagnets with alternating South and North poles on a first end, each magnet comprising a metal core and an electrical wire around the metal core. The array of magnets is coupled to a base plate on a second end opposite to the first end. The actuator also includes an attraction plate at a distance from the first end of the array of the magnets such that the attraction plate moves toward the magnets when an electrical current flows through the electrical wire around the metal core and moves away from the magnets when the current becomes zero. The array of magnets is configured to form a uniform gap from the attraction plate.