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:
Apr. 21, 1987
Filed:
Jun. 22, 1981
Roger W Buecher, Kaneohe, HI (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A salvage apparatus is provided which includes a bellows type drum contai. The container includes a flexible skirt which is generally tubular with top and bottom ends. The container further includes a pair of rigid plates, one of the plates being sealably mounted to the top of the skirt and the other plate being sealably being mounted to the bottom of the skirt. It is important that the lateral area of each plate substantially encompass the lateral expanded area of the respective skirt end. A plurality of controllable valves are provided for selectively opening and closing the passage of fluid. One of these valves is located in the bottom plate for selectively allowing the passage of water into or out of the container and another valve is located through the container for selectively introducing pressurized air into the container. A relief valve is also located through the container for relieving air from the container when the inside and outside differential pressure has exceeded a predetermined level.