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A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having by at least one charge pump mounted on an end cap, and the trunnion arms for controlling the hydraulic pumps extending out of opposite sides of the housing. A

A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having by at least one charge pump mounted on an end cap, and the trunnion arms for controlling the hydraulic pumps extending out of opposite sides of the housing. A cooling fan may be mounted on the primary or secondary input shaft on the opposite side of the pulley used to engage the prime mover. An auxiliary pump may also be mounted on the primary input shaft and may be located either at the input end thereof adjacent to the pulley, or on the opposite side of the housing.

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A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having by at least one charge pump mounted on an end cap, and the trunnion arms for controlling the hydraulic pumps extending out of opposite sides of the housing. A

A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having by at least one charge pump mounted on an end cap, and the trunnion arms for controlling the hydraulic pumps extending out of opposite sides of the housing. A cooling fan may be mounted on the primary or secondary input shaft on the opposite side of the pulley used to engage the prime mover. An auxiliary pump may also be mounted on the primary input shaft and may be located either at the input end thereof adjacent to the pulley, or on the opposite side of the housing. e first angle is about 10°. 3. A fan wheel as in claim 1 wherein the second angle is about 36°. 4. A fan wheel as in claim 1 wherein each blade further comprises a third section located adjacent the center section, the third section having a forward facing substantially flat surface located at the trailing edge, the surface being aligned in a plane perpendicular to a center axis of the center section. 5. A fan wheel as in claim 4 wherein the first section is substantially flat. 6. A fan wheel as in claim 5 wherein the second section is curved with a substantially uniform thickness. 7. A fan wheel as in claim 6 wherein the third section is curved with a steeper curvature than the second section. 8. A fan wheel comprising: a center hub section; and blades extending from the center hub section, each blade having a leading edge and a trailing edge, a section of the blade extending from the center hub section at the trailing edge having a forward facing substantially flat surface. 9. A fan wheel as in claim 8 wherein the surface is located along a plane perpendicular to a center axis of the center hub section. 10. A fan wheel as in claim 8 wherein each blade comprising a distal section proximate a tip of the blade and a middle section, wherein the distal section is curved at the trailing edge with a first angle relative to a tangent to the distal section at the trailing edge of between about 7°-13°, and wherein the middle section is curved at the trailing edge with a second angle relative to a tangent to the middle section at the trailing edge of between about 33°-39°. 11. A fan wheel as in claim 10 wherein the first angle is about 10°. 12. A fan wheel as in claim 10 wherein the second angle is about 36°. 13. A fan wheel as in claim 10 wherein the distal section is substantially flat. 14. A fan wheel as in claim 10 wherein the middle section is curved with a substantially uniform thickness. 15. A fan wheel as in claim 14 wherein the proximal section has a substantially uniform thickness and is curved with a steeper curvature than the middle section. 16. An electric fan comprising: an electric motor; and a fan wheel connected to the electric motor, the fan wheel comprising a hub and fan blades extending from the hub, the fan blades comprising a proximal section at the hub, a distal section and a middle section, the proximal section having a flat surface at a trailing edge of the blade, the trailing edge at the distal section being curved with an angle of curvature of about 10°, and the trailing edge at the middle section being curved with an angle of curvature of about 36°, wherein when the fan wheel is rotated by the electric motor at a constant speed, air pushed by each of the fan blades is propelled at a substantially same velocity and direction from the blade measured across a radial length of the blade. 17. An electric fan as in claim 16 wherein the distal section is substantially flat.