Accession Number : ADD015657

Title :   Electromagnetic Marker Float Release.

Descriptive Note : Patent, Filed 15 Oct 90, patented 31 Mar 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Domborwski, James H ; Marn, William H

Report Date : 31 Mar 1992

Pagination or Media Count : 4

Abstract : The present invention provides a marker float release that includes a housing; an electromagnet mounted to the housing having an electromagnetic core; and a buoyant element having a permanent magnet. The buoyant element is positioned against the housing so that the permanent magnet is magnetically attracted to the electromagnetic core with sufficient force to hold the buoyant clement adjacent to the housing when the housing and the buoyant element are submerged in water by inducing a magnetic field in the electromagnetic core. A flexible line having one end attached to the buoyant element and another end attached to the housing links the buoyant element to the housing. Magnetic field reversing means is operably coupled to the electromagnet for selectively reversing the magnetic field of the electromagnetic core, thereby permitting the buoyant element to be released from the housing.

Descriptors :   *ELECTROMAGNETS, *MARKERS, *PATENTS, *RELEASE MECHANISMS, *BUOYS, CORES, FLOATS, HOUSINGS, MAGNETIC FIELDS, PERMANENT MAGNETS, WATER, ELECTRIC SWITCHES, ELECTROMECHANICAL DEVICES

Subject Categories : Marine Engineering
      Couplers, Fasteners, and Joints
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE