226results about How to "Reduced torque requirements" patented technology

A bottom hole assembly 10 for drilling a deviated borehole includes a positive displacement motor (PDM) 12 or a rotary steerable device (RSD) 110 having a substantially uniform diameter motor housing outer surface without stabilizers extending radially therefrom. In a PDM application, the motor housing 14 may have a fixed bend therein between an upper power section 16 and a lower bearing section 18. The long gauge bit 20 powered by the motor 10 may have a bit face 22 with cutters 28 thereon and a gauge section 24 having a uniform diameter cylindrical surface 26. The gauge section 24 preferably has an axial length at least 75% of the bit diameter. The axial spacing between the bit face and the bend of the motor housing preferably is less than twelve times the bit diameter. According to the method of the present invention, the bit may be rotated at a speed of less than 350 rpm by the PDM and / or rotation of the RSD from the surface.

The invention relates to a wing folding mechanism for an unmanned plane. The wing folding mechanism comprises a first sleeve, a second sleeve, a support shaft, a locking part, a tractive part and a connecting rod, wherein the first sleeve is provided with a first cavity; the second sleeve is provided with a second cavity; the support shaft is arranged in the first cavity in a slidable manner; the locking part is mounted on the side face of the first sleeve and has a locking state and an unlocking state; the tractive part is fixed in the second cavity and can move back and forth in the shaft axis direction of the first sleeve; the connecting rod is used for connecting the support shaft and the tractive part; the wing folding mechanism has an unfolding state and a folding state. On one aspect, part of the folding mechanism enters the support shaft of the second cavity, so that the folding mechanism is in the unfolding state; on the other aspect, under the action of the tractive part, the connecting rod enables the first sleeve to rotate relative to the end face of the second sleeve, so that the folding mechanism is in the folding state, as a result, both the unfolding and folding states are realized without a wheel gear serving as a transmission part; in addition, the wing folding mechanism is compact in structure and stable in motion, and few requirements are required for the torque of a motor.

A hybrid powertrain is provided that provides engine starting from an electric-only mode with a reduced torque load on the motor / generator. The powertrain includes an engine and a motor / generator, which may be a single motor / generator in a strong or full hybrid, but is not limited to such. The motor provides propulsion torque in an electric-only operating mode, and is configured to apply torque to a transmission input member. A first clutch is selectively engagable to connect the engine output member for common rotation with the transmission input member. An engine starting mechanism is provided that multiplies motor torque used to start the engine so that less is diverted from propelling the vehicle, enabling a smaller motor / generator to be used. A method of controlling such a powertrain is also provided.