The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2025
Filed:
May. 17, 2021
The Gleason Works, Rochester, NY (US);
Hermann J. Stadtfeld, Manderscheid, DE;
THE GLEASON WORKS, Rochester, NY (US);
Abstract
A method of applying a contrast agent, such as a luminescent contrast agent (e.g. fluorescent, phosphorescent) to the tooth flank surfaces () of a gearset () 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 () 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 (), 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 () where the luminescent contrast agent has been partially or completely removed represents the zone of the tooth contact.