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:
Nov. 24, 1998
Filed:
Apr. 21, 1997
Applicant:
Inventors:
Assignee:
Hydrodyne Incorporated, Sarasota, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F42B / ; E06B / ;
U.S. Cl.
CPC ...
86 50 ; 109 495 ;
Abstract
An explosive blast shield has two connected parts, a foraminous inner shield surrounded by an impervious outer shield. The inner shield has an open lower end to absorb an explosive blast of water and gas, as from an underwater explosion. The inner shield, whose area is about 20% holes, blocks most liquid from entering the space between the two shields, but gas passes readily through the holes to equalize the pressure across the inner shield. The shield may include a chimney at the upper end for release of gas and a hold-down to prevent the shield from being blown upward.