Tooth gap relieved enveloping worm
US10955040B2 · kind B2 · utility
0Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jul 31, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/22
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A worm comprises enveloping worm teeth having relieved ends. The worm is machined in three steps comprising machining a threaded section, machining a first end section, and machining a second end section. The threaded section is machined utilizing a rack-form tool having a rack-form thickness. The first end section and the second end section are machined utilizing a larger rack-form thickness, thereby, providing relieved ends. The teeth of the worm having such relieved ends mesh with the teeth of a mating gear at full depth throughout preventing partial teeth engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.