Electromechanical relay and method of matching the impedance...

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Radio frequency switch

Reexamination Certificate

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C335S078000, C335S083000

Reexamination Certificate

active

06211756

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is directed generally to an electromechanical relay and, more particularly, to an ultraminiature electromechanical relay.
2. Description of Background
Ultraminature electromechanical relays are used in various applications, such as instrumentation, telecommunications, automatic test systems, wireless technologies, automotive and medical electronics, as well as commercial and general aviation and aerospace applications. Many of these applications, and others, operate in very high frequency ranges, such as 100 MHz to 10 GHz, and even beyond. General purpose ultraminiature electromechanical relays are typically not designed to handle such high frequencies. They are typically limited to applications below 4 GHz. Above this range, the signal fidelity of prior relays is typically diminished.
Accordingly, there exists a need for an electromechanical relay which can operate in the frequency ranges demanded by many high frequency applications without diminishing signal fidelity.
BRIEF SUMMARY OF INVENTION
The present invention is directed to an electromechanical relay. The relay includes a frame and a header assembly having a plurality of contacts. The relay also includes a core assembly having an end engaging the frame. The relay further includes an armature assembly pivotally connected to the core assembly. The armature assembly has an armature and at least one actuator engaging one of the contacts. The relay also includes a shield connected to the header assembly which defines a cavity in which the contacts are disposed. The contacts are disposed in the cavity of the shield.
The present invention represents a substantial advance over prior art relays. The present invention has the advantage that it is operable at very high frequencies without diminishing signal fidelity. The present invention also has the advantage that it prevents leakage and radiation of high frequency signals transmitting through the relay.


REFERENCES:
patent: 3681719 (1972-08-01), Treschitta
patent: 3694777 (1972-09-01), Muller
patent: 4081772 (1978-03-01), Schuessler et al.
patent: 4101855 (1978-07-01), Drapeau
patent: 4496919 (1985-01-01), Fournier
patent: 5025237 (1991-06-01), Yamazaki et al.
patent: 5815057 (1998-09-01), Hoffman et al.
Teledyne Relays Series RF310, RF 313 Brochure, 1997.
Teledyne Relays Series RF320, RF 323 Brochure, 1997.
Teledyne Relays Series RF300, RF 303 Brochure, 1994.

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