초록 ▼

A steer-drive for vehicles primarily operated in fluids (e.g., boats and planes) interposes respective left and right orbital gear drives into the vehicle drivetrain between the engine/transmission or/speed-reducer and the vehicle's respective port and starboard propulsion elements. The orbital driv

A steer-drive for vehicles primarily operated in fluids (e.g., boats and planes) interposes respective left and right orbital gear drives into the vehicle drivetrain between the engine/transmission or/speed-reducer and the vehicle's respective port and starboard propulsion elements. The orbital drive units comprise only an input gear and an output gear interconnected by at least one orbiting cluster gear that is supported in a rotating housing and also meshes only with the input and output gears. The orbital units are designed so that (a) when rotation of the housing is prevented, driving torque is transferred at speed ratios selected to be as close to 1:1 as is practical, and (b) when steering torque causes rotation of the housing, the steering torque is added or subtracted from the driving torque. Steering torque is applied simultaneously in equal and opposite directions to the orbital units, causing the vehicle's respective propulsion element on one side of the vehicle to speed up and the vehicle's respective propulsion element on the other side of the vehicle to slow down at the same rate.

대표청구항 ▼

A steer-drive for vehicles primarily operated in fluids (e.g., boats and planes) interposes respective left and right orbital gear drives into the vehicle drivetrain between the engine/transmission or/speed-reducer and the vehicle's respective port and starboard propulsion elements. The orbital driv

A steer-drive for vehicles primarily operated in fluids (e.g., boats and planes) interposes respective left and right orbital gear drives into the vehicle drivetrain between the engine/transmission or/speed-reducer and the vehicle's respective port and starboard propulsion elements. The orbital drive units comprise only an input gear and an output gear interconnected by at least one orbiting cluster gear that is supported in a rotating housing and also meshes only with the input and output gears. The orbital units are designed so that (a) when rotation of the housing is prevented, driving torque is transferred at speed ratios selected to be as close to 1:1 as is practical, and (b) when steering torque causes rotation of the housing, the steering torque is added or subtracted from the driving torque. Steering torque is applied simultaneously in equal and opposite directions to the orbital units, causing the vehicle's respective propulsion element on one side of the vehicle to speed up and the vehicle's respective propulsion element on the other side of the vehicle to slow down at the same rate. ud of claim 1 wherein said at least one convection cooling hole has a diameter substantially equal to a width dimension of said diffuser recess. 4. The inner shroud of claim 1 wherein each segment has at least one additional convection cooling hole opening into a diffuser recess along the other of said pair of end faces. 5. A segment for a turbine shroud assembly comprising: a segment body having a sealing face and opposite end faces; and at least one convection cooling hole extending through said segment body and opening into a diffuser recesses formed in a respective end face of said segment body; wherein said diffuser recess is substantially rectangular in shape, with lengthwise surfaces on opposite sides of the convection cooling hole tapering toward said convection cooling hole. 6. The segment of claim 5 wherein a major one of said lengthwise surfaces extends downstream of said convection cooling hole. 7. The segment of claim 5 wherein said convection cooling hole has a diameter substantially equal to a width dimension of said diffuser recess. 8. A method of purging cooling air into gaps between adjacent part annular segments in a turbine shroud assembly comprising: a) supplying cooling air through one or more cooling holes formed in each segment, each cooling hole opening along an end face of the segment; and b) diffusing the cooling air before it reaches the end face of each said segment. 9. The inner shroud of claim 5 wherein each segment has at least one additional convection cooling hole opening into a diffuser recess along the other of said pair of end faces.