Topic
Paddle
About: Paddle is a research topic. Over the lifetime, 5649 publications have been published within this topic receiving 28389 citations.
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TL;DR: The relationship between the discharge flow rate, mixing power and mixing time in the fully turbulent range in mixing vessels is investigated experimentally with paddles and baffle plates of various dimensions covering from non-baffled to fully baffled conditions as discussed by the authors.
Abstract: The interrelations among the discharge flow rate, the mixing power and the mixing time in the fully turbulent range in mixing vessels are investigated experimentally with paddles and baffle plates of various dimensions covering from non-baffled to fully baffled conditions. The discharge flow rate number is correlated as a function of the paddle dimensions and the baffle plate dimensions. The relations between the discharge flow rate number and the power number under incomplete baffle conditions are obtained in two cases. If the baffle condition level is fixed, the power number is proportional to the discharge flow rate number for the various paddles. If the paddle is fixed, the power number is proportional to the square of the discharge flow rate number for various baffle conditions. The mixing time is proportional to the time required to circulate the discharged liquid once, and the number of times of circulation to reach mixing is correlated with paddle dimensions, regardless of baffle conditions.
27 citations
Patent•
16 Nov 1987TL;DR: In this paper, a deformation absorbing member is incorporated in the paddle support arm of a lead frame for mounting a semiconductor chip in an integrated circuit package, which connects the paddle to the external mounting frame, so that the initial desired physical and electrical characteristics are unaltered after a forming operation such as paddle downsetting.
Abstract: A lead frame for mounting a semiconductor chip in an integrated circuit package incorporates a deformation absorbing member as an integral part of the paddle support arm, which connects the paddle to the external mounting frame, so that the initial, desired physical and electrical characteristics are unaltered after a forming operation such as paddle downsetting. The paddle is depressed with respect to the external mounting frame.
26 citations
TL;DR: In this article, a discrete element approach is presented to assess the powder flow in a lab-scale rotary tablet press with a force feeder consisting of three paddle wheels of different shapes.
26 citations
Patent•
04 Nov 1970
TL;DR: In this paper, a power generator, utilizing ocean waves as a motivating force, had at least one undershot paddle wheel above a upward sloping gathering platform and at least two paddle wheels arranged below the platform at one end.
Abstract: A power generator, utilizing ocean waves as a motivating force, having at least one undershot paddle wheel above a upward sloping gathering platform and at least one paddle wheel arranged below the platform at one end. The upper paddle wheels, arranged to deliver power from incoming waves, and, outgoing waves are arranged to rotate a propeller shaft. The gathering platform guides incoming waves in an undershot action on the wheels and discharges some of the water over the end of the platform in an overshot action on the paddle wheel below the platform.
26 citations
Patent•
29 Aug 1983
TL;DR: In this paper, a communications device suitable for use by severely handicapped persons having speech impairments and capable of only spastic movements comprises a housing in which speech reproduction apparatus is located for storing and reproducing pre-recorded audio message segments.
Abstract: A communications device suitable for use by severely handicapped persons having speech impairments and capable of only spastic movements comprises a housing in which speech reproduction apparatus is located for storing and reproducing pre-recorded audio message segments. The exterior of the housing has a nearly horizontal front portion on a console on which three relatively large (approximately 5"×5") pressure-operated paddle switch actuator members are located. A vertical display panel is located immediately behind the paddle actuators and has on it visual aid cards which have a symbol identical to the recorded message which is to be reproduced by actuation of the appropriate paddle. Pressure on the selected paddle closes a switch which turns on a light associated with the selected visual aid card and also actuates the reproduction of an audio message corresponding to the visual aid card.
26 citations