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. 26, 2019
Filed:
Aug. 24, 2017
3m Innovative Properties Company, St. Paul, MN (US);
David L. Albean, Indianapolis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A battery-powered electronic device, such as an electronic hearing protector () includes a housing () enclosing the battery and an electronics assembly powered by the battery, the electronics assembly comprises a processor controlled by updatable software. The device further includes a first electrical contact () that is a ground line; a second electrical contact () that is a data programming line in a first state, and that is a charging voltage line in a second state; and a third electrical contact () that is a clock line in a first state, and that is a charge enable line in the second state. The first, second and third electrical contacts (-) are accessible from outside the housing (). A switch enclosed by the housing () changes the second electrical contact () between the first state and the second state.