The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2007
Filed:
Oct. 18, 2002
Applicant:
Robert E. Marsh, Kansas City, MO (US);
Inventor:
Robert E. Marsh, Kansas City, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is a dual position hearing protection device. In one position, the device provides substantial sound attenuation and hearing protection. In the second position, an opening in the device permits sounds to enter the ear of the user relatively unobstructed. In the preferred embodiment of this invention the position of the device is changed simply by compressing the exposed end of the earplug.