Oscillatory tooth and needle gear transmitting devices
US4798104A · kind A · utility
Inventors
Key dates
| Filing date | Oct 30, 1987 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Oct 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oscillatory tooth and needle gear transmitting device which is chiefly composed of a wave-actuator, an oscillatory tooth wheel and a stationary needle gear. The oscillatory tooth and needle gear transmitting device for transmitting rotary motion comprises a wave-actuator composed of an off-set standard rolling bearing, an oscillatory tooth wheel composed of a set of cylindrical pin-shaped oscillatory teeth with wedged trapezoid tooth heads, and a needle gear composed of a set of needle teeth with or without rolling sleeves, the three basic components being assembled coaxially. In the transmitting device, the reciprocal movement of oscillatory teeth is realized by meshing forces between tooth profiles, elastic return rings being unnecessary; multi-tooth meshing resulting in uniformized loads, the device of uniforming loads being removed. The transmitting device has the features of large speed ratio, great loading capacity, high transmitting efficiency, compact structure and simplified machining process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.