Transmission
US5248283A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | May 11, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19647
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A vehicle transmission has two shafts parallel to one another. At least one of the shafts is formed of two partial shafts which are in alignment and axially spaced apart. A torsion shaft then connects the two for rotation with each other, but prevents transmission of bending moments between the partial shafts. This structure is particularly useful in a hydrostatic-mechanical power distributing transmission, in which the torsion shaft is radially aligned with the planetary gearsets of the power distributing transmission. The torsion shaft can be considerably thinner than the comparable portion of a conventional shaft, so the overall transmission can be more compact radially. The transmission also is provided with unequal gear ratios, while the planetary gearsets are the same size, allowing a particularly compact structure. Preferably, one of the gear ratios with a small control ratio is used as the primary working range for the transmission to maximize efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.