# US 2019/0316630 A1 · Asymmetric bearing for riser tensioner system

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- Number: US 2019/0316630 A1
- Document ID: US20190316630A1
- Status: Published application
- Kind: A1
- Application number: 16/281,254
- Filed: 2019-02-21
- Published: 2019-10-17
- Earliest claimed: 2018-02-21
- Assignees: Lord Corporation
- Applicants: LORD Corporation
- Inventors: Christopher FIORE
- Web page: https://patentgrep.com/patent/US20190316630A1

## CPC

- E21B 17/01: Risers
- F16C 27/063: {Sliding contact bearings}
- E21B 4/003: {Bearing, sealing, lubricating details (for roller bits E21B10/22)}
- F16C 23/045: {for radial load mainly, e.g. radial spherical plain bearings}
- F16C 33/122: {Multilayer structures of sleeves, washers or liners}
- F16C 33/22: Sliding surface consisting mainly of rubber or synthetic rubber (F16C33/24 - F16C33/28 take precedence)
- B63B 21/502: {by means of tension legs}
- E21B 19/006: {including heave compensators}
- F16C 2208/10: Elastomers; Rubbers
- F16C 2352/00: Apparatus for drilling
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)

## Abstract

A riser tensioner bearing is provided. The riser tensioner bearing is an asymmetric bearing having an outer member comprising a cylindrical outer profile and an at least partially spherical interior profile, and an inner member comprising an at least partially spherical outer profile and a substantially cylindrical outer profile.

## Claims

### Claim 1

A bearing, comprising:
an outer member comprising a cylindrical outer profile and an at least partially spherical interior profile; and
an inner member comprising an at least partially spherical outer profile and a substantially cylindrical outer profile.

### Claim 2 (depends on 1)

The bearing of claim 1, further comprising:
a high capacity laminate (HCL) bearing stack disposed between the at least partially spherical interior profile of the outer member and the at least partially spherical outer profile of the inner member.

### Claim 3 (depends on 1)

The bearing of claim 1, further comprising:
an elastomeric spacer disposed between the outer member and the substantially cylindrical outer profile of the inner member.