Paddle

About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.

Method and device for determining rhenological properties

Abstract: A method and device for the measurement of rheological properties of high density slurry materials and in particular high density mill tailings. A sample of the tailings is placed within a mixing tub, with either a concentric paddle or a planetarily movable paddle used to effect the mixing. A digitally controlled electric motor is used to directly drive the paddle at a constant or predetermined speed or speeds. The tub is laterally pivotable against a load cell for a direct determination of reaction torque with correlation to viscosity and other rheological properties of the mill tailing.

Development of a Wheel-Paddle Integrated Quadruped Robot for Rough Terrain and its Verification on Hybrid Mode

Abstract: To enhance the motion performance of all-terrain robots, an eccentric paddle mechanism (ePaddle) based on planet gear mechanism was designed. This letter is on the design, control scheme, and implementation of a wheel-paddle integrated quadruped robot based on the ePaddle mechanism. To ensure the reliability and ruggedness in harsh environment, protection measures were added to both electrical system and crucial mechanical parts. To negotiate rough terrain effectively, hybrid mode was introduced, which is more efficient comparing with other legged modes and easier to transit among three supporting gestures according to the variation of terrain situation. Each joint has been measured to follow accurate trajectories of position. Indoor and outdoor tests were conducted with the described hybrid mode, which verified the whole design and the negotiability in rough terrain.

Exercise machine safety switch

Abstract: An exercise machine has an electrical safety switch which switch includes a base with a switch actuator attached thereto. A paddle is rotatably attached to the base for movement toward and away from the actuator. The paddle has an upper element and a lower element to form a void therebetween. The lower element as an aperture through which the actuator passes when the paddle is depressed. Placement of an enabling card in the void obstructs the aperture and enables operation of the actuator between "on" and "off" positions by depression of the paddle. Removal of the enabling card prevents accidental actuation of the machine.

Electrical circuit interruption device having improved arc extinguishing apparatus including an arc paddle

Abstract: A circuit interrupter in the form of a circuit breaker (10) is shown having a movable contact (14a) which moves between contacts engaged and contacts disengaged position relative to a stationary contact (16a). An arc paddle (20) is mounted in a housing (12) for spring biased pivotal motion of an arc dissipating portion between a position out of alignment with the movable and stationary contacts and in engagement with the side of the movable contact when the contacts are in the contacts engaged position and a position in which the arc dissipating portion is in alignment with and in between the contacts when the contacts are in the contacts disengaged position to force arcs which occur between the contacts to extend their travel path and dissipate the arc in an improved shortened period of time. In an alternative embodiment the arc paddle (22) is generally U-shaped having two legs (22a, 22b) connected by a bight (22c). The paddle is pivotably mounted at the bight with one leg disposed in alignment with but beyond the contacts and the other leg disposed out of alignment with the contacts and closely adjacent the side of the movable contact when the contacts are in engagement. When the movable contact separates from the stationary contact, motion is transferred to the one leg causing the paddle to pivot with other leg moving into alignment with and in between the two contacts.