Patents
US 8943949 B2: Neutral setting apparatus of an adjustable hydraulic machine
- Granted
- 2015-02-03
- Filed
- 2012-05-10 application 13468596
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The invention relates to a neutral setting apparatus for adjustable hydraulic machines, in particular the adjustment of the neutral position of a servo valve. In particular, the invention relates to servo adjustment devices with mechanically adjustable control pistons, wherein the forces necessary for this can be applied mechanically, electro-magnetically, pneumatically or hydraulically. The invention relates to a neutral setting apparatus of an adjustable hydraulic machine, with a housing in which a mounted input shaft is arranged, to one end of which a torque can be applied for rotating the input shaft about an axis. Thus providing a robust and cost-effective setting mechanism for the neutral position of a servo valve.
Source: PVGPATDIS, file of 2026-04-10 (ipg150203.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| SAUER-DANFOSS INC. 39 patents | US company or organization | Ames, IA | SAUER DANFOSS INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Reinhardt Thoms | Büdelsdorf, DE | 12 | PVGPATDIS, file of 2026-04-10 | |
| Peter Bahna | Pružina, SK | 4 | PVGPATDIS, file of 2026-04-10 | |
| Sebastian Bujna | Dubnica nad Váhom, SK | 1 | PVGPATDIS, file of 2026-04-10 | |
| Peter Chlebana | Nová Dubnica, SK | 1 | PVGPATDIS, file of 2026-04-10 | |
| Miroslav Chmatil | Nová Dubnica, SK | 2 | PVGPATDIS, file of 2026-04-10 | |
| Michael Knazek | Nemšová, SK | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F04B | Positive-displacement machines for liquids; pumps | F04B49/12 | PVGPATDIS, file of 2026-04-10 |
| F15B | Systems acting by means of fluids in general; fluid-pressure actuators, e.g. servomotors; details of fluid-pressure systems, not otherwise provided for | F15B13/04 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T137/8593 | 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 |
|---|---|---|---|---|---|
| 2014-04-09 | Name change Change of name | SAUER-DANFOSS INC. signed 2013-09-17 | DANFOSS POWER SOLUTIONS INC. AMES, IA | 32641/351 | ECORSEXC, file of 2026-09-25 |
| 2012-05-10 | Assignment Assignment of assignor's interest | THOMS, REINHARDT signed 2012-04-17 BAHNA, PETER signed 2012-04-20 BUJNA, SEBASTIAN signed 2012-04-20 CHLEBANA, PETER signed 2012-04-20 CHMATIL, MIROSLAV signed 2012-04-20 KNAZEK, MICHAEL signed 2012-04-20 | SAUER-DANFOSS INC. AMES, IA | 28190/208 | 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.