초록 ▼

A symmetric pump having a symmetric end cap attached to a symmetric housing is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm extends in a first direction and a system port opens in a first

A symmetric pump having a symmetric end cap attached to a symmetric housing is disclosed. The end cap is attachable in a first position or a second position wherein the second position is rotated relative to the housing. A trunnion arm extends in a first direction and a system port opens in a first orientation when the housing is connected to the end cap in a first position. The end cap includes structure such that the housing may be connected in a second position so that the trunnion arm extends in a second direction while maintaining the system port opening in the first orientation. The end cap may be provided with a symmetric porting system. A control device for affecting movement of the swashplate is disclosed. Methods of locking the swashplate into a predetermined position are also taught.

대표청구항 ▼

[ The invention claimed is:] [1.]1. A hydraulic pump comprising:a symmetric housing rotatably supporting a pump shaft; anda symmetric end cap attached to the symmetric housing, wherein the symmetric end cap comprises a porting system including two case drains, and the end cap is attachable to the ho

[ The invention claimed is:] [1.]1. A hydraulic pump comprising:a symmetric housing rotatably supporting a pump shaft; anda symmetric end cap attached to the symmetric housing, wherein the symmetric end cap comprises a porting system including two case drains, and the end cap is attachable to the housing in two different orientations and at least one of the two case drains is operational in each of the orientations.