Karl J Widiner

US Patent:

43796575, Apr 12, 1983

Filed:

Jun 19, 1980

Appl. No.:

6/161235

Inventors:

Karl J. Widiner - Carpinteria CA
Riley G. Goldsmith - Houston TX

Assignee:

Conoco Inc. - Ponca City OK

International Classification:

B63B 3544

US Classification:

405195

Abstract:

A modular riser tensioner has a frame (10) for mounting on a platform deck with air (16,18) and oil (20,22) accumulators mounted on a mounting frame and connected to cylinders (24-30) also on the mounting frame. A piston (32) located within the cylinders carries a riser tensioning ring (50) for supporting the riser. Pairs of cylinders are located on opposite sides of the riser and connected to an oil accumulator independent of the other cylinders.