公开(公告)号：USD766520S1

公开(公告)日：2016-09-13

申请号：US29521338

申请日：2015-03-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Designer： Douglas D. Fletcher ,  Nicolas A. Echeverri ,  Kelly R. Potter ,  Brenda M. Bonney ,  Jason T. Lunn ,  Garin G. Ipsen ,  Gregory G. Jager ,  Oscar M. Hemberg ,  Eric O. Hemberg

公开(公告)号：USD1029788S1

公开(公告)日：2024-06-04

申请号：US29805033

申请日：2021-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Designer： Douglas W. Fletcher ,  Jason T. Lunn ,  Gregory G. Jager ,  Jacob T. Lusson ,  Eric O. Hemberg

Abstract: FIG. 1 is a perspective view showing the new design for a voice masking headphone;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left view thereof;
FIG. 5 is a right view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The portions of the voice masking headphone in FIGS. 1-7 shown in broken lines adjacent the shaded areas represent the bounds of the claimed design while all other broken lines depict environment all broken lines form no part of the claimed design.

公开(公告)号：US20200178012A1

公开(公告)日：2020-06-04

申请号：US16088773

申请日：2017-03-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Douglas D. Fletcher ,  Jason T. Lunn ,  Gregory G. Jager ,  Oscar M. Hemberg ,  Eric O. Hemberg ,  Henrik Fransson

IPC: H04R29/00 ,  G06F3/16 ,  H04R1/02 ,  G10K15/04 ,  A61F11/08 ,  A61F11/14

Abstract: A sound testing chamber comprises a sound proof enclosure, a speaker system and an electronic noise generator system. The speaker system is disposed within the sound proof enclosure. The electronic noise generator system is electronically coupled to the speaker system. The electronic noise generator system is configured to send a signal to the speaker system to generate a sound simulating a scenario where hearing protection is desirable. A method for testing hearing protection equipment using a noise simulating booth comprises: allowing a test subject to select a sound to be played by an electronic noise simulating system; positioning the test subject within a sound proof enclosure having speakers that generate the sound; positioning hearing protection equipment on the test subject; and playing the sound in the sound proof enclosure to permit the test subject to evaluate the hearing protection equipment.

公开(公告)号：USD978443S1

公开(公告)日：2023-02-14

申请号：US29753638

申请日：2020-10-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Designer： Gregory G. Jager ,  Douglas D. Fletcher ,  Jason T. Lunn ,  Eric O. Hemberg ,  Oscar M. Hemberg ,  Anders P. Hellberg ,  Marco D'Adamo