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:
Mar. 19, 2013
Filed:
Jan. 05, 2009
Bruce J. P. Mortimer, Maitland, FL (US);
Gary A. Zets, Maitland, FL (US);
Bruce J. P. Mortimer, Maitland, FL (US);
Gary A. Zets, Maitland, FL (US);
Engineering Acoustics, Inc., Casselberry, FL (US);
Abstract
An eccentric mass (EM) motor in a vibrotactile transducer provides a wide band vibrational stimulus to a mechanical load in response to an electrical input. The eccentric mass and motor may form part of the transducer actuator moving mass, which is in contact with a load, i.e, the skin of a user. The moving mass and the actuator housing may be in simultaneous contact with the load. The moving mass may be guided by a spring between the actuator housing and the moving mass. The load, moving mass, spring compliance, and housing mass make up a moving mass resonant system. The spring compliance and system component masses may be configured to maximize the actuator displacement and/or tailor the transducer response to a desired level. This configuration may be implemented as a low-mass wearable wide-band vibrotactile transducer.