Invention Grant
- Patent Title: Push-in earplug and method of making the same using a mandrel
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Application No.: US17754191Application Date: 2020-09-24
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Publication No.: US11786408B2Publication Date: 2023-10-17
- Inventor: Jacob H. Ely , Robert C. Coffin , James D. Brown
- 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 Katherine M. Scholz
- International Application: PCT/IB2020/058923 2020.09.24
- International Announcement: WO2021/059178A 2021.04.01
- Date entered country: 2022-03-25
- Main IPC: A61F11/08
- IPC: A61F11/08 ; B29C44/12 ; B29C44/34 ; B29C48/00 ; B29C48/15 ; B29C44/56 ; B29K105/04 ; B29K27/18 ; B29K55/00 ; B29K77/00
Abstract:
A push-in earplug is provided. The push-in earplug comprises an elongate core comprising a core material. The push-in earplug also comprises an outer layer comprising a foam material, the outer layer covering at least a portion of an outer surface of the elongate core. The push-in earplug also comprises a channel extending through the elongate core from a first end of the elongate core to the second end of the elongate core.
Public/Granted literature
- US20220296420A1 PUSH-IN EARPLUG AND METHOD OF MAKING THE SAME USING A MANDREL Public/Granted day:2022-09-22
Information query
IPC分类:
