Power transmission apparatus
US5528960A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19098
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A jacket having a pair of small helical gears is spline-fitted around a splined shaft. Since the small helical gears have an adverse helix angle to each other, the jacket moves along the spline shaft in the axial direction so as to distribute an equal torque to both small helical gears. The splited torque is transmitted to a pair of drive shafts each of which drives the main rotor of a helicopter through a combination of gear and pinion. The drive shafts are fixed axially and therefore helical gears or double-helical gears can be used in the combination of gear and pinion. Consequently the power transmission apparatus according to the present invention provides a light and compact structure,
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.