Infinitely variable transmission
US4673379A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1985 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Sep 25, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H9/125
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An infinitely variable transmission includes a driver shaft having a driver pulley, a driven shaft having a driven pulley, the driver and driven pulleys having fixed conical discs and movable conical discs, the movable conical discs having pressure chambers, an endless belt trained around said driver and driven pulleys, a device for supplying a fluid under pressure to the pressure chambers, a pressure regulating mechanism for regulating the fluid pressure at a prescribed pressure, and a fluid metering mechanism for regulating the amount of the fluid under the prescribed pressure in the pressure chambers. At least one of the pressure regulating mechanism and the fluid metering mechanism is disposed in the driver shaft or the driven shaft. The pressure regulating mechanism is arranged to discharge an excess amount of the fluid to a lower-pressure area when the supplied fluid pressure exceeds a prescribed level and also has passages for supplying the discharged amount of the fluid as lubricating oil to the endless belt. The fixed conical discs of the driver and driven pulleys are disposed on opposite sides of the endless belt. The fixed conical discs are arranged such that the central…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.