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:
Mar. 19, 2019
Filed:
Mar. 07, 2018
Spawar Systems Center Pacific, San Diego, CA (US);
Leif E. Roth, San Diego, CA (US);
Ryan J. Halonen, Durango, CO (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A pressure activated time-delayed release device and method. The device includes a body having a drive chamber and a compression chamber disposed therein, a drive piston disposed within the drive chamber of the body, and a compression piston disposed within the compression chamber of the body. A throttle mechanism is disposed between the drive piston and the compression piston. The throttle mechanism controls a release of viscous fluid from the drive chamber into the compression chamber. The drive piston and compression piston are connected so as to cause the compression piston to move substantially simultaneously with the drive piston to compress a compressible element disposed within the compression chamber. The device moves from an un-actuated state to an actuated state when the device is exposed to a predetermined water pressure for a predetermined period of time.