US 11,988,951 B2
Multi-dielectric coaxial push-cables and associated apparatus
Alexander L. Warren, Escondido, CA (US); and Mark S. Olsson, La Jolla, CA (US)
Assigned to SeeScan, Inc., San Diego, CA (US)
Filed by SeeScan, Inc., San Diego, CA (US)
Filed on Jun. 17, 2019, as Appl. No. 16/443,789.
Claims priority of provisional application 62/686,589, filed on Jun. 18, 2018.
Prior Publication US 2020/0012182 A1, Jan. 9, 2020
Int. Cl. G03B 37/00 (2021.01); G02B 6/44 (2006.01); H01B 1/02 (2006.01); H01B 11/18 (2006.01); H04N 7/18 (2006.01); H04N 23/56 (2023.01); H04N 23/50 (2023.01)
CPC G03B 37/005 (2013.01) [G02B 6/4416 (2013.01); G02B 6/443 (2013.01); H01B 1/026 (2013.01); H01B 11/1808 (2013.01); H01B 11/1891 (2013.01); H04N 7/183 (2013.01); H04N 23/56 (2023.01); H04N 23/555 (2023.01)] 16 Claims
OG exemplary drawing
 
1. A jetter video push-cable, comprising:
a central hose having a channel to transmit and dispense pressurized water;
a tubular conductor layer disposed about the central hose;
an impedance tuning layer disposed about the central hose having a thickness of a material selected to provide a predefined electromagnetic impedance;
a shielding layer disposed about impedance tuning layer, wherein the impedance tuning layer is a multi-dielectric stack comprising multiple hollow tube layers having one or more structural layers and impedance tuning layers, wherein the layers in combination have thicknesses selected to have a predefined elastic modulus and electromagnetic impedance; and
an outer jacket enclosing the outer shield layer, impedance tuning layer, conductor layer, and central hose.