Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Vacuum or hermetically sealed type
Patent
1995-01-03
1997-01-14
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Vacuum or hermetically sealed type
335154, H01H 166
Patent
active
055944000
ABSTRACT:
An improved reed relay having a bobbin, an operating coil wound around the bobbin and at least one reed switch contained within the bobbin. The reed switch has a hermetically-sealed glass capsule that contains an atmosphere of dry inert gas. The capsule also contains two long thin contact blades having terminations extending from respective ends of the capsule. A first contact blade acting as the armature is formed at its contact end with multiple prongs, each prong containing a contact pad. The second contact blade acts as the fixed contact. The contact pads surround the contact end of the second blade so as to contact, during operation of the relay, a different surface area of the second blade. The prongs may be formed in any desired geometric arrangement (e.g., rectangular, triangular, etc.) to surround the contact end of the second contact blade.
REFERENCES:
patent: 3579158 (1971-05-01), Kutyla
patent: 3974468 (1976-08-01), Ygfors
patent: 4084142 (1978-04-01), Campbell et al.
patent: 4182999 (1980-01-01), Walsh
patent: 4191935 (1980-03-01), Archer et al.
patent: 4510473 (1985-04-01), Schweiger et al.
patent: 4752754 (1988-06-01), Strauss
patent: 4811153 (1989-03-01), Sakatos
Codispoti Joseph S.
Donovan Lincoln
Siemens Stromberg-Carlson
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