초록 ▼

The use of fluid passages for structures in fluid environments such as offshore platform risers or spars to reduce and/or control vortex-induced vibrations and drag is disclosed. The use of fluid passages to protect a moored marine vessel by reducing and/or controlling low frequency drift oscillatio

The use of fluid passages for structures in fluid environments such as offshore platform risers or spars to reduce and/or control vortex-induced vibrations and drag is disclosed. The use of fluid passages to protect a moored marine vessel by reducing and/or controlling low frequency drift oscillations due to random waves, and low frequency wind induced resonant oscillations is also disclosed.

대표청구항 ▼

The use of fluid passages for structures in fluid environments such as offshore platform risers or spars to reduce and/or control vortex-induced vibrations and drag is disclosed. The use of fluid passages to protect a moored marine vessel by reducing and/or controlling low frequency drift oscillatio

The use of fluid passages for structures in fluid environments such as offshore platform risers or spars to reduce and/or control vortex-induced vibrations and drag is disclosed. The use of fluid passages to protect a moored marine vessel by reducing and/or controlling low frequency drift oscillations due to random waves, and low frequency wind induced resonant oscillations is also disclosed. e of which is a black light; an elongated bulb housing to retain said bulbs, said bulb housing having an axis passing through a pair of opposed bushings, with at least one set of power supply wires extending from said bulbs through one of said bushings; a pivot bracket receiving said opposed bushings so that said bulb housing can rotate with respect to said bracket 360° about said axis; and suction cup mechanism for attachment to a flat surface and a rail lock mechanism for attachment to a rail said suction cup mechanism and said rail mount clamp mechanism each being detachable from said pivot bracket. 10. A method to secure and position a rotatable light device, which method comprises: rotating a bulb housing having at least one light bulb therein with respect to a pivot bracket about an axis to a desired position anywhere within a 360° radius; choosing between a suction cup fastening mechanism for a flat surface structure and a rail lock fastening mechanism for a rail structure connecting one of said fastening mechanisms to said pivot bracket; and utilizing said one chosen fastening mechanism to secure said pivot bracket to a desired structure. 11. A method to secure and position a rotatable light device, which method comprises: rotating a bulb housing having at least one light bulb therein with respect to a pivot bracket about an axis to a desired position anywhere within a 360° radius; choosing between a suction cup fastening mechanism for a flat surface structure and a rail lock fastening mechanism for a rail structure; connecting one of said fastening mechanisms to said pivot bracket including inserting a rail lock assembly having a pair of grooves onto a pair of tongues extending from said pivot bracket; and utilizing said one chosen fastening mechanism to secure said pivot bracket to a desired structure.