Acoustics – Anatomic or prosthetic relation – Ear and mouth
Reexamination Certificate
2010-01-22
2010-12-21
Donels, Jeffrey (Department: 2832)
Acoustics
Anatomic or prosthetic relation
Ear and mouth
C181S130000, C181S135000, C381S372000, C002S209000, C002S423000
Reexamination Certificate
active
07854294
ABSTRACT:
An earmuff assembly with a double-shell structure is disclosed for use with a sound-attenuating circumaural headset. The earmuff assembly comprises a cup-shaped outer shell mounted on a resilient outer sealing ring and a cup-shaped inner shell mounted on a resilient inner sealing ring. By means of the two sealing rings the outer and the inner shells are brought into abutment with the head surface around an ear of a wearer. Both shells are structurally rigid. The sound attenuation performance is maximized by isolating the inner shell from the outer shell.
REFERENCES:
patent: 2989598 (1961-06-01), Touger et al.
patent: 3602329 (1971-08-01), Bauer et al.
patent: 3864756 (1975-02-01), Desimone
patent: 4156118 (1979-05-01), Hargrave
patent: 4572323 (1986-02-01), Randall
patent: 4674134 (1987-06-01), Lundin
patent: 4771454 (1988-09-01), Wilcox, Jr.
patent: 4989271 (1991-02-01), Sapiejewski et al.
patent: 6695093 (2004-02-01), Falco
patent: 6856690 (2005-02-01), Skulley
patent: 7703572 (2010-04-01), Du et al.
Du Yu
Homma Kenji
Vaudrey Michael A.
Adaptive Technologies, Inc.
Donels Jeffrey
Russell Christina
The Marbury Law Group PLLC
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