Parking brake for subsea mining lift system

Details Parking brake for subsea mining lift system Parking brake for subsea mining lift system

1974-06-13

1976-02-24

Werner, Frank E.

Ships

Building

Canal and ferry boats

114 5D, 214 25, 294 90, E21B 1914

Patent

active

039399915

ABSTRACT:
A parking brake for subsea mining equipment that is raised and lowered by a pipe string from a surface vessel. The brake assembly is mounted between a pair of linear lift units that alternately grip equally spaced collars on the pipe and move the pipe string in incremental steps. The brake includes a releasable yoke for engaging one of the collars. The yoke is rotatable to permit rotation of the pipe string by the brake assembly. The position of the brake is such that either drive unit may be used to position the pipe string so that a collar is engaged by the yoke of the brake assembly.

REFERENCES:
patent: 3145786 (1964-08-01), O'Neill et al.
patent: 3177944 (1965-04-01), Knights

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