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:
Oct. 06, 2015
Filed:
Apr. 15, 2011
Michael A. Webb, Cave Creek, AZ (US);
Charles Christiansen, Glendale, AZ (US);
Leland J. Hanchett, Jr., Cave Creek, AZ (US);
Scott Sullivan, Cave Creek, AZ (US);
Michael A. Webb, Cave Creek, AZ (US);
Charles Christiansen, Glendale, AZ (US);
Leland J. Hanchett, Jr., Cave Creek, AZ (US);
Scott Sullivan, Cave Creek, AZ (US);
Hanchett Entry Systems, Inc., Phoenix, AZ (US);
Abstract
A system for operating an electric door release having an actuator powered by an energy harvester. The actuator may be a piezoelectric actuator and the harvester may be a piezo harvester. The system may further include a power module, a rechargeable battery and a voltage boost circuit disposed between the energy harvester and the actuator. When a piezoelectric actuator is used, a recycle actuator discharge circuit may be disposed between the piezoelectric actuator and the power module battery for recapturing a portion of the energy delivered to the piezoelectric actuator. The piezoelectric harvester may include an energy input portion whereby the piezo electric harvester is excited by the energy input portion. The energy input portion may include a circular or linear driving gear for exciting the piezoelectric harvester or a stepper motor generator, driven by movement of a door. The harvester may also be a stepper motor/generator.