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:
Nov. 19, 2013
Filed:
Nov. 22, 2011
Hideaki Iijima, Kanagawa, JP;
Hideaki Iijima, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A discharge energy recovery device to recover discharge energy discharged from a piezoelectric element when the piezoelectric element is driven includes a drive voltage generator to generate a voltage to drive the piezoelectric element; a discharge voltage monitoring unit to monitor a voltage discharged from the piezoelectric element when the piezoelectric element is driven; a first current supplier to supply a current energy to operate a first load circuit when the discharged voltage is equal to or greater than a first voltage that enables driving of the first load circuit, and a second current supplier to supply a current energy to operate a second load circuit when the discharged voltage is less than the first voltage and equal to or greater than a second voltage that enables driving of the second load circuit by monitoring the currently discharged voltage using the discharge voltage monitoring unit.