Accession Number : ADD002910
Title : Coated Magnetically Biased Reed Switch.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Seeley,Robert L
Report Date : 29 Jun 1976
Pagination or Media Count : 4
Abstract : The patent relates to a small reed switch having a glass tubularly shaped envelope containing a pair of reed contacts which is modified to ensure its being biased to either an open or a closed position. A donut-shaped piece of a rubber-bonded, barium-ferrite, magnetic material is circumferentially mounted on the reed switch at a position where its magnetic field influences the contacts to an open position or a closed position. Thusly arranged, an actuating magnet, having a sufficient field at a single pre-established distance from the contacts, actuates the switch from all radial directions from the switch. Potting the modified switch in an epoxy resin further ensures a greater reliability and makes it ideal for implantations in laboratory animals.
Descriptors : *Electric switches, *Patents, Proximity devices, Actuators, Magnets, Bioengineering, Implantation, Potting, Epoxy resins
Subject Categories : Electrical and Electronic Equipment
Biomedical Instrumentation and Bioengineering
Distribution Statement : APPROVED FOR PUBLIC RELEASE