Patents
US 11801923 B2: Gyroscopic boat roll stabilizer
- Granted
- 2023-10-31
- Filed
- 2022-08-03 application 17880580
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A gyroscopic roll stabilizer comprises a gimbal having a support frame and enclosure configured to maintain a below-ambient pressure, a flywheel assembly including a flywheel and flywheel shaft, one or more bearings for rotatably mounting the flywheel inside the enclosure, a motor for rotating the flywheel, and bearing cooling system for cooling the bearings supporting the flywheel. The bearing cooling system enables heat generated by the bearings to be transferred through the flywheel shaft to a heat sink disposed within a cavity in the end of the flywheel shaft, or to a liquid coolant circulating within the cavity.
Source: PVGPATDIS, file of 2026-04-10 (ipg231031.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| WAVETAMER LLC 26 patents | US company or organization | Greenville, NC | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Grady F. Smith | Greenville, NC | 28 | PVGPATDIS, file of 2026-04-10 | |
| David Holden | Davidson, NC | 41 | PVGPATDIS, file of 2026-04-10 | |
| Jeffrey Peterson | Mooresville, NC | 15 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B63B | Ships or other waterborne vessels; equipment for shipping | B63B39/04 | PVGPATDIS, file of 2026-04-10 |
| H02K | Dynamo-electric machines | H02K7/083 | PVGPATDIS, file of 2026-04-10 |
| F16F | Springs; shock-absorbers; means for damping vibration | F16F15/315 | PVGPATDIS, file of 2026-04-10 |
| F16C | Shafts; flexible shafts; elements or crankshaft mechanisms; rotary bodies other than gearing elements; bearings | F16C19/525 | PVGPATDIS, file of 2026-04-10 |
| G01C | Measuring distances, levels or bearings; surveying; navigation; gyroscopic instruments; photogrammetry or videogrammetry | G01C21/18 | PVGPATDIS, file of 2026-04-10 |
| G05D | Systems for controlling or regulating non-electric variables | G05D1/0875 | PVGPATDIS, file of 2026-04-10 |
| H05K | Printed circuits; casings or constructional details of electric apparatus; manufacture of assemblages of electrical components | H05K7/20854 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T74/12 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2022-10-06 | Assignment Assignment of assignor's interest | SMITH, GRADY F. signed 2020-08-17 | WAVETAMER LLC GREENVILLE, NC | 61333/19 | ECORSEXC, file of 2026-09-25 |
| 2022-10-06 | Assignment Assignment of assignor's interest | HOLDEN, DAVID signed 2018-11-16 PETERSON, JEFFREY signed 2018-11-16 | SMITH, GRADY F. GREENVILLE, NC | 61332/904 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.