초록 ▼

A hydraulic transmission pump assembly adapted to provide fluid under pressure to predetermined components in a transmission including a one-way clutch assembly operatively coupled to the pump and an electric motor operatively coupled to the one-way clutch. The one-way clutch is operatively connecte

A hydraulic transmission pump assembly adapted to provide fluid under pressure to predetermined components in a transmission including a one-way clutch assembly operatively coupled to the pump and an electric motor operatively coupled to the one-way clutch. The one-way clutch is operatively connected to an engine to provide motive power the pump and the electric motor at engine speeds above a predetermined level thereby providing fluid under pressure to the transmission and driving the electric motor to generate electricity. The electric motor is operable to drive the pump at engine speeds below the predetermined level to provide fluid under pressure to the transmission during this operating condition.

대표청구항 ▼

A hydraulic transmission pump assembly adapted to provide fluid under pressure to predetermined components in a transmission including a one-way clutch assembly operatively coupled to the pump and an electric motor operatively coupled to the one-way clutch. The one-way clutch is operatively connecte

A hydraulic transmission pump assembly adapted to provide fluid under pressure to predetermined components in a transmission including a one-way clutch assembly operatively coupled to the pump and an electric motor operatively coupled to the one-way clutch. The one-way clutch is operatively connected to an engine to provide motive power the pump and the electric motor at engine speeds above a predetermined level thereby providing fluid under pressure to the transmission and driving the electric motor to generate electricity. The electric motor is operable to drive the pump at engine speeds below the predetermined level to provide fluid under pressure to the transmission during this operating condition. ye to the sensor as retinal wavefront data. Means are also provided for determining from the retinal wavefront data aberrations in the optical system. The second optical path includes means for introducing the incident beam onto the corneal surface and for directing a reflected beam therefrom to the sensor as corneal wavefront data. Means are additionally provided for determining from the corneal wavefront data a topography of an corneal surface. Finally, the system comprises means for switching the incident beam between the first and the second optical path. autofocus means for automatically focussing said imaging transducer lens on the front surface of said user's eye. 12. The instrument according to claim 11, comprising means for varying said calibration data in dependence upon a current focal point of said imaging transducer lens. 13. The instrument according to claim 1, further comprising one or more further light sources for illuminating the user's eye. 14. The instrument according to claim 13, wherein said one or more further light sources are located around an outer rim of said eyepiece. 15. The instrument according to claim 14, wherein two pairs of additional light sources are provided around said rim. 16. The apparatus according to claim 1, wherein said light source is operable to generate near infra-red light. 17. The instrument according to claim 16, wherein said light source comprises an 850 nm LED. 18. The instrument according to claim 1, wherein said processing means is operable to determine said pupil centre by thresholding the image to locate the boundary between the pupil and the iris and by identifying the centre of the circle which best fits the located boundary. 19. The instrument according to claim 1, wherein said calibration data is generated in advance during a calibration routine in which the user looks at different preselected locations on the image plane and in which the processing means is operable to correlate the determined distances between pupil center and light source reflection from the corresponding electrical image signals with the preselected locations. 20. The instrument according to claim 1, wherein said calibration data comprises a scaling factor for scaling said distance between said two locations. 21. The instrument according to claim 20, wherein said calibration data comprises a scaling factor for an x component of said distance and a scaling factor for a y component of said distance. 22. The instrument according to claim 21, wherein said calibration data further comprises an offset for an x direction and an offset for a y direction. 23. The instrument according to claim 1, wherein at least two further light sources are provided for illuminating the user's eye and wherein the instrument further comprises illumination control means for selectively illuminating different ones of said at least two further light sources and wherein said imaging transducer is operable to generate an image of the user's eye when different ones of said at least two further light sources are illuminated and is operable to generate a highlight-free image by combining the images output from said transducer when the different light sources are illuminated. 24. The instrument according to claim 23, wherein said processing means is operable to determine the centre of said pupil from said highlight-free image. 25. The instrument according to claim 23, wherein said illumination control means is operable to illuminate a first pair of said at least two further light sources during a first time interval and is operable to illuminate a second different pair of said at least two further light sources during a second time interval and wherein said imaging transducer is operable to generate an image of the user's eye during said first time interval and during said second time interval. 26. The instrument according to claim 25, wherein said illumination control means is operable to switch on said light source for outputting light through said eyepiece during said first time interval and wherein said processing means is operable to determine the location of said reflection of said light from said light source by locating reflections from said first pair of further light sources, estimating a position of said reflection of said light from said light source based on said reflection locations from said first pair of further light sources, and thresholding the image around said estimated position. 27. The apparatus according to claim 1, wherein said light source for outputting light