Patent · US Active

Earplug with stem comprising a sleeve

US11173069B2 · kind B2 · utility

0Cited by

35References

15Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Caitlin E. Meree · Okabena, US
James P. Endle · New Richmond, US
Joshua M. Fishman · Madison, US
Hannah L. Mathers · Windom, US
Travis L. Potts · Woodbury, US
Joseph D. Rule · Woodbury, US
Richard J. Webb · Inver Grove Heights, US
Caroline M. Ylitalo · Stillwater, US

Key dates

Filing date	Dec 14, 2017
Grant date	Nov 16, 2021
Priority date	—
Expiry date	Jul 18, 2038

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F11/08
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A hearing-protective earplug (1) with a resilient polymeric foam body (10) and with a grippable stem (110) that includes a forward portion (111) with an annular sleeve (112) that at least partially defines an open-ended, front-facing cavity (114) within which a rearward portion (21) of the resilient polymeric foam body resides.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.