Patents
US 9375852 B2: Rotational hydraulic joints
- Granted
- 2016-06-28
- Filed
- 2013-04-01 application 13854693
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A rotational hydraulic joint may include an extension chamber and a retraction chamber. Each chamber may include an end cap and a piston that moves relative to the end cap. One or more ports may add and remove fluid from the chamber. The rotational hydraulic joint may rotate in a cyclical direction when fluid is added to the extension chamber and in a countercyclical direction when fluid is added to the retraction chamber. The chambers may each include a torus-shaped cavity. Bladders may prevent fluid from leaking out of the rotational hydraulic joint. Stationary and movable electrodes may be coupled to the end cap and piston respectively. A plurality of rotational hydraulic joints may be combined to create a compound joint.
Source: PVGPATDIS, file of 2026-04-10 (ipg160628.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| QUALITY MANUFACTURING INC. 7 patents | US company or organization | Winchester, KY | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jeffrey A. Rose | Park City, UT | 7 | PVGPATDIS, file of 2026-04-10 | |
| James Adam Rose | Lexington, KY | 10 | PVGPATDIS, file of 2026-04-10 | |
| Stephen D. Rose | Lexington, KY | 7 | PVGPATDIS, file of 2026-04-10 | |
| Raymond Cooper | Irvine, KY | 7 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B25J | Manipulators; chambers provided with manipulation devices | B25J9/1612 | PVGPATDIS, file of 2026-04-10 |
| F04B | Positive-displacement machines for liquids; pumps | F04B9/10 | PVGPATDIS, file of 2026-04-10 |
| G01B | Measuring length, thickness or similar linear dimensions; measuring angles; measuring areas; measuring irregularities of surfaces or contours | G01B7/00 | PVGPATDIS, file of 2026-04-10 |
| Y10S | Technical subjects covered by former uspc cross-reference art collections [xracs] and digests | Y10S901/27 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T74/20311 | 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 |
|---|---|---|---|---|---|
| 2013-07-01 | Assignment Assignment of assignor's interest | COOPER, RAYMOND signed 2013-05-21 ROSE, JAMES ADAM signed 2013-05-21 ROSE, STEPHEN D. signed 2013-05-21 ROSE, JEFFREY A. signed 2013-06-28 | QUALITY MANUFACTURING INC. WINCHESTER, KY | 30721/168 | 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.