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. 18, 2020
Filed:
Dec. 06, 2017
Applicant:
Choon Kee Lee, Denver, CO (US);
Inventor:
Choon Kee Lee, Denver, CO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A42B 3/06 (2006.01); A63B 71/10 (2006.01); A42B 3/28 (2006.01); A42B 3/12 (2006.01); A42B 3/14 (2006.01);
U.S. Cl.
CPC ...
A42B 3/063 (2013.01); A42B 3/121 (2013.01); A42B 3/124 (2013.01); A42B 3/28 (2013.01); A63B 71/10 (2013.01); A42B 3/122 (2013.01); A42B 3/145 (2013.01);
Abstract
The present invention provides a protective headgear having a multi-layered shell to sequentially extend time of collision of a blunt trauma to a human head and to differentially release an average impact force of the collision to the human head wearing the protective headgear across a mid layer of the multi-layered shell. The mid layer is configured to separate centripetal mechanical waves of the collision from centrifugal mechanical waves of the collision in phase with the centripetal mechanical waves so as to reduce summation of in-phase bidirectional mechanical waves of bidirectional mechanical forces upon the collision.