Patents
US 11821492 B2: Double differential reducer ultra-high reduction transmission
- Granted
- 2023-11-21
- Filed
- 2021-01-14 application 17757363
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A transmission having a housing (18), at least a first input (20) rotatable about a first input axis (IA1), and at least a first output (26) rotatable about a first output axis (OA1). The transmission further includes a first outer side gear (14) connected to and drivable by the first input, a first planet gear set comprising a first inner planet gear (11) and a first outer planet gear (15) with the inner and outer planet gears being rigidly connected to, and in axial alignment with, one another. The first planet gear set is rotatable (22, 24) via the first outer side gear and is also rotatable (23) about the first output axis. The transmission further includes a second outer side gear (16) in mesh with the first outer planet gear, and a second inner side gear (12) connected to the first output and being rotatable about the first output axis via the first inner planet gear.
Source: PVGPATDIS, file of 2026-04-10 (ipg231121.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| THE GLEASON WORKS 68 patents | US company or organization | Rochester, NY | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hermann J. Stadtfeld | Manderscheid, DE | 34 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F16H | Gearing | F16H1/2854 | 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 |
|---|---|---|---|---|---|
| 2022-06-30 | Security interest Security interest Us patent security agreement | GLEASON CUTTING TOOLS CORPORATION signed 2022-06-30 GLEASON METROLOGY SYSTEMS CORPORATION signed 2022-06-30 THE GLEASON WORKS signed 2022-06-30 | MANUFACTURERS AND TRADERS TRUST COMPANY BUFFALO, NY | 60556/795 | PASDL, file of 2026-10-15 |
| 2022-06-27 | Assignment Assignment of assignor's interest | STADTFELD, HERMANN J. signed 2022-06-25 | THE GLEASON WORKS ROCHESTER, NY | 60320/100 | 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.