- Patent Title: Hearing protector with compartment for rechargeable battery pack
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Application No.: US15548039Application Date: 2016-01-27
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Publication No.: US10172742B2Publication Date: 2019-01-08
- Inventor: Douglas D. Fletcher , Oscar M. Hemberg , Eric O. Hemberg
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Kevin Weber
- International Application: PCT/US2016/015037 WO 20160127
- International Announcement: WO2016/126476 WO 20160811
- Main IPC: A61F11/14
- IPC: A61F11/14 ; H04R1/10 ; H04R3/00
Abstract:
A hearing protection device is provided. The hearing protection device can include a speaker to relay sounds, such as conversations, to the user of the hearing protection. The hearing protection device can be powered by a rechargeable battery pack or separately by standard batteries.
Public/Granted literature
- US20180014972A1 HEARING PROTECTOR WITH COMPARTMENT FOR RECHARGEABLE BATTERY PACK Public/Granted day:2018-01-18
Information query
IPC分类:
