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US 4,145,883 AGranted
Hydrostatic transmission for tractors and the like
AssigneeLinde Aktiengesellschaft
InventorFranz Forster
Life of this patent
Estimating the term…
Abstract
For tractors or like machines which can be provided, upon assembly, with either a hydrostatic transmission or a mechanical stepped-speed transmission, a transmission housing having a removable cover is provided. The machine has a drive shaft and a driven shaft and, according to the invention, a hydrostatic transmission is mounted intact upon the cover for introduction into and removal from the housing with this cover. The hydrostatic transmission comprises an inclined-disk variable-displacement pump whose input shaft is connected to the drive shaft and a hydraulic pump of the drive-flange type hydraulically connected to the pump and having an output shaft which is, in turn, connected to the driven shaft.
Claims8
A machine comprising:
- a support;
- a transmission housing on said support and open along a side;
- a cover replaceably mounted on said housing along said side;
- a drive shaft journaled on said support;
- a driven shaft journaled on said support;
- and
- a hydrostatic transmission in said housing;
- said transmission comprising at least the following components:
- a hydraulic pump,
- an input shaft connected to said pump for driving same,
- a hydraulic motor hydraulically connected to said pump for fluid-medium propulsion thereby, and
- an output shaft connected to said motor and rotatable thereby,
- said input being operatively connected to said drive shaft and said output shaft being operatively connected to said driven shaft, and said components of said hydrostatic transmission all being mounted upon said cover for removal and replacement therewith on said transmission housing, said input shaft and said output shaft being each provided with a respective gear, said drive shaft and said driven shaft each having respective gear in said transmission housing, the gears of said input and output shafts being positioned respectively to mesh with the gears of said drive and driven shafts upon the mounting of said cover on said housing.
10 more elements
A machine comprising:
- a support;
- a transmission housing on said support and open along a side;
- a cover replaceably mounted on said housing along said side;
- a drive shaft journaled on said support;
- a driven shaft journaled on said support;
- and
- a hydrostatic transmission in said housing, said transmission comprising at least the following components:
- a hydraulic pump,
- an input shaft connected to said pump for driving same,
- a hydraulic motor hydraulically connected to said pump for fluid-medium propulsion thereby, and
- an output shaft connected to said motor and rotatable thereby,
- said input shaft being operatively connected to said drive shaft and said output shaft being operatively connected to said driven shaft, and said components of said hydrostatic transmission all being mounted upon said cover for removal and replacement therewith on said transmission housing, said pump being an inclined-disk axial-piston pump having a cylinder drum, said motor being a drive-flange axial-piston motor having a cylinder drum, said hydraulic transmission further comprising an intermediate body disposed between said cylinder drums and affixed to said cover, said intermediate body connecting said cylinder drums together, said intermediate body being formed with a cylindrical concave surface on a side thereof turned toward said motor, said transmission further comprising an intermediate disk disposed between said drum of said motor and said concave surface, said disk having a cylindrically convex surface riding upon said concave surface, said motor drum pressing said disk against said concave surface.
9 more elements
A machine comprising:
- a support;
- a transmission housing on said support and open along a side;
- a cover replaceably mounted on said housing along said side;
- a drive shaft journaled on said support;
- a driven shaft journaled on said support;
- and
- a hydrostatic transmission in said housing, said transmission comprising at least the following components:
- a hydraulic pump,
- an input shaft connected to said pump for driving same,
- a hydraulic motor hydraulically connected to said pump for fluid-medium propulsion thereby, and
- an output shaft connected to said motor and rotatable thereby,
- said input shaft being operatively connected to said drive shaft and said output shaft being operatively connected to said driven shaft, and said input shaft and output shaft, said hydraulic pump and said hydraulic motor components being mounted upon said cover for removal and replacement therewith on said transmission housing, said input shaft and said output shaft being each provided with a respective coupling member, said drive shaft and said driven shaft each having a respective coupling member in said transmission housing, the coupling member of said input and output shafts being positioned respectively to engage with the coupling members of said drive and driven shafts upon the mounting of said cover on said housing.
9 more elements
Dependencies are inferred from the claim text.