Patents
US 12332138 B2: Recognition of tooth contact with a luminescent agent
- Granted
- 2025-06-17
- Filed
- 2021-05-17 application 17998941
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method of applying a contrast agent, such as a luminescent contrast agent (e.g. fluorescent, phosphorescent) to the tooth flank surfaces (3, 4) of a gearset (1, 2) wherein the luminescent contrast agent is mixed with transmission oil and is preferably invisible to the human eye. While the members of the gearset roll together, the contrast agent-oil mixture (6) is first introduced into the mesh of the rolling gears. While the mixture is squeezed through the tooth contact, most of the oil is removed in the area of tooth contact. A camera (15), including, as necessary, a filter for certain light wave frequencies, obtains an image which shows the areas with and without luminescent contrast agent. The area (10) where the luminescent contrast agent has been partially or completely removed represents the zone of the tooth contact.
Source: PVGPATDIS, file of 2026-04-10 (ipg250617.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 |
|---|---|---|---|
| G01M | Testing static or dynamic balance of machines or structures; testing of structures or apparatus, not otherwise provided for | G01M13/021 | PVGPATDIS, file of 2026-04-10 |
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N21/64 | 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 |
|---|---|---|---|---|---|
| 2023-02-24 | Assignment Assignment of assignor's interest | STADTFELD, HERMANN J. signed 2022-11-26 | THE GLEASON WORKS ROCHESTER, NY | 62791/72 | 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.