US Patent 9019364 Remote visual inspection system

A visual inspection system [100] includes a remote end [110] that is moved through a conduit [1] with a flexible pushrod [400]. The remote end [110] having at least one carriage assembly [130] with encoders [140] indicating a distance traveled within the conduit [1]. The visual inspection device [100] has a longitudinal camera [150] to identify view down the length of the conduit [1], but also has at least one transverse camera [160] adapted to visually inspect an inside surface [3] of the conduit [1]. Also, the transverse camera [160] may be used to inspect other conduits that connect to conduit [1].