# US 9,520,630 B2 · Isolation devices that pass coupler output signals > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,630 B2 - Document ID: US9520630B2 - Status: Granted - Kind: B2 - Application number: 14/669,262 - Filed: 2015-03-26 - Published: 2015-12-24 - Granted: 2016-12-13 - Earliest claimed: 2011-02-21 - Assignees: ZIH Corp. - Applicants: ZIH Corp. - Inventors: Edward A. Richley; Daniel F. Donato - Web page: https://patentgrep.com/patent/US9520630B2 ## CPC - H01P 1/2002: {Dielectric waveguide filters (H01P1/212, H01P1/213, H01P1/215, H01P1/219 take precedence)} - H01P 1/30: for compensation of, or protection against, temperature or moisture effects {; for improving power handling capability (H01P1/04, H01P1/08 take precedence)} - H01P 7/06: Cavity resonators - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) ## Abstract Various embodiments are directed to isolation devices, systems, methods and various means, for isolating ignition causing signals and/or explosions from hazardous or explosive environments. ## Claims ### Claim 1 An isolation device disposed in electrical communication between an isolated component and an exposed component, the isolation device comprising: a protective housing comprising a wave coupler chamber; a transmission coupler positioned within the wave coupler chamber, wherein the transmission coupler is configured to transmit an electromagnetic wave into the wave coupler chamber following receipt of an input signal generated by one of the isolated component or the exposed component; and a reception coupler positioned within the wave coupler chamber, wherein the reception coupler is configured to transmit a coupler output signal to the other of the isolated component or the exposed component upon receipt of the electromagnetic wave, wherein the isolated component is enclosed within an environmental enclosure, and the protective housing of the isolation device is configured to be mounted to the environmental enclosure such that a first portion of the protective housing extends within the environmental enclosure and a second portion of the protective housing extends outside of the environmental enclosure. ### Claim 2 (depends on 1) The isolation device of claim 1, further comprising a dielectric at least partially filling the wave coupler chamber. ### Claim 3 (depends on 2) The isolation device of claim 2, wherein the dielectric is an epoxy resin. ### Claim 4 (depends on 2) The isolation device of claim 2, wherein the dielectric substantially completely fills the wave coupler chamber. ### Claim 5 (depends on 2) The isolation device of claim 2, wherein the dielectric is a potting compound. ### Claim 6 (depends on 1) The isolation device of claim 1, wherein the protective housing comprises a conductive internal service, which defines the wave coupler chamber. ### Claim 7 (depends on 1) The isolation device of claim 1, wherein the protective housing defines the wave coupler chamber. ### Claim 8 (depends on 1) The isolation device of claim 1, wherein the protective housing defines external threads that are configured to engage the environmental enclosure. ### Claim 9 (depends on 1) The isolation device of claim 1, wherein the isolation device is configured to transmit the coupler output signal at a frequency between 4 GHz and 8 GHz. ### Claim 10 (depends on 1) The isolation device of claim 1, wherein the isolation device is configured to transmit the coupler output signal at a frequency between 6 GHz and 7 GHz. ### Claim 11 (depends on 1) The isolation device of claim 1, wherein the isolation device is configured to transmit the coupler output signal at a frequency between 6.3 GHz and 7 GHz. ### Claim 12 (depends on 1) The isolation device of claim 1, wherein the isolation device is configured to transmit the coupler output signal at a signal loss of less than 0.7 dB, when compared to the input signal, at a frequency between 6.3 GHz and 7 GHz. ### Claim 13 (depends on 1) The isolation device of claim 1, wherein the isolation device is configured to transmit the coupler output signal to at least one of the exposed component positioned within an explosive environment or the isolated component positioned within the environmental enclosure. ### Claim 14 (depends on 13) The isolation device of claim 13, wherein the isolation device is configured to remove aspects of the input signal that may cause ignition of the explosive environment when generating the coupler output signal. ### Claim 15 (depends on 1) The isolation device of claim 1, wherein the wave coupler chamber forms part of a waveguide. ### Claim 16 (depends on 1) The isolation device of claim 1, wherein the wave coupler chamber forms part of a resonant cavity. ### Claim 17 (depends on 1) The isolation device of claim 1, wherein the protective housing comprises a base metal having a first conductivity, a conductive interior surface having a second conductivity, and wherein the second conductivity is greater than the first conductivity. ### Claim 18 An isolation device disposed in electrical communication between an isolated component positioned within an environmental enclosure and an exposed component positioned outside the environmental enclosure, the isolation device comprising: a protective housing comprising a wave coupler chamber; a transmission coupler positioned within the wave coupler chamber, wherein the transmission coupler is configured to transmit an electromagnetic wave into the wave coupler chamber following receipt of an input signal generated by one of the isolated component or the exposed component; a reception coupler positioned within the wave coupler chamber, wherein the reception coupler is configured to transmit a coupler output signal to the other of the isolated component or the exposed component upon receipt of the electromagnetic wave; and a dielectric at least partially filling the wave coupler chamber, wherein the protective housing is configured to be mounted to the environmental enclosure such that a first portion of the protective housing extends within the environmental enclosure and a second portion of the protective housing extends outside of the environmental enclosure. ### Claim 19 (depends on 18) The isolation device of claim 18, wherein the protective housing defines external threads that are configured to engage the environmental enclosure.