scispace - formally typeset
Search or ask a question
Topic

Paddle

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


Papers
More filters
Patent
11 Jun 2014
TL;DR: In this paper, the utility model of reaction kettles is applied to a pigment yellow 180 reaction kettle, where the reaction paddles are longitudinal and transversely arranged, so that a condition that a material is uniformly stirred in the reaction kettle is guaranteed, the structure is simple, operation is convenient, the material is furthest uniformly stirred, the product quality is improved, the stirring time is also shortened, and the work efficiency is improved.
Abstract: The utility model relates to the technical field of reaction kettles, and particularly relates to a stirring paddle device of a pigment yellow 180 reaction kettle The stirring paddle device comprises a stirring paddle device body, wherein the stirring paddle device body comprises a coupler A arranged on the top of a shell of the reaction kettle; the top of the coupler A is connected with a motor A, the bottom of the coupler A is connected with a longitudinal stirring shaft, and the longitudinal stirring shaft is arranged in the shell of the reaction kettle; the upper part and the lower part of a shaft rod of the longitudinal stirring shaft are respectively provided with a stirring paddle A, the middle parts of the left and right side surfaces of the shell of the reaction kettle are respectively correspondingly provided with an L-shaped support; each L-shaped support is provided with a motor B, and each motor B is connected with a coupler B The stirring paddle device provided by the utility model has the advantages that the stirring paddles are longitudinal and transversely arranged, so that a condition that a material is uniformly stirred in the reaction kettle is guaranteed, the structure is simple, the operation is convenient, the material is furthest uniformly stirred, the product quality is improved, the stirring time is also shortened, and the work efficiency is improved

10 citations

Patent
28 Aug 2008
TL;DR: In this paper, a movable paddle is disposed within the nozzle chamber at a location between the ink ejection nozzles and an actuator is attached to the paddle and upon actuation, the paddle can reciprocate the paddle toward and away from a first one of the ink ex-nozzles so that ink can be ejected out through that first nozzle.
Abstract: An inkjet printhead includes a nozzle chamber structure defining a nozzle chamber. The nozzle chamber structure further defines a pair of ink ejection nozzles and an ink supply channel in fluid communication with the nozzle chamber. A movable paddle is disposed within the nozzle chamber at a location between the ink ejection nozzles. An actuator is attached to the paddle and, upon actuation, can reciprocate the paddle toward and away from a first one of the ink ejection nozzles so that ink in the nozzle chamber can be ejected out through that first nozzle.

10 citations

10 Jun 2012
TL;DR: In this paper, the authors present a formal assessment of the haptic paddle, a one degree-of-freedom forcefeedback joystick that has been adopted at several universities as a teaching tool in System Dynamics.
Abstract: In this paper, we present a formal assessment of the haptic paddle, a one degree-of-freedom forcefeedback joystick that has been adopted at several universities as a teaching tool in System Dynamics. System Dynamics is a core mechanical engineering undergraduate course that teaches students to combine knowledge from physics and differential equations to model dynamic systems in several domains. Haptic paddles are useful for hands-on modeling and control laboratories and enables students to physically interact with simulated dynamic systems via their sense of touch. Prior qualitative assessments of haptic paddles have shown that both students and educators believe them to be beneficial in conveying the core concepts of the course and that they increase student enthusiasm for learning the material. Toward quantifying these perceived benefits, we have conducted a systematic assessment of learning objectives associated with haptic paddle laboratories. To do this, we developed a multiple choice quiz consisting of five questions for each of the five sequential laboratories during the semester. To establish if and when students learned the concepts associated with our learning objectives for each lab, we randomized presentation time of the lab quiz to each of our four sections, with the following options: (1) at the beginning of a lab session, (2) after a pre-lab lecture, (3) immediately after completion of the lab, and (4) after completion of the lab report. This assessment architecture enables us to determine whether learning happened in lecture, in the lab itself, or during subsequent reflection on laboratory results during the process of writing the lab report.

10 citations

Patent
22 Jul 1958

10 citations

Patent
19 Aug 1993
TL;DR: A rotary internal combustion engine has an engine block defining a drum-shaped combustion chamber, a rotatable propeller shaft extends axially through the chamber, each of the paddle and hub devices having first and second paddles that are fixed diametrically opposite each other with a hub therebetween.
Abstract: A rotary internal combustion engine, has an engine block defining a drum-shaped combustion chamber. A rotatable propeller shaft extends axially through the chamber. First and second paddle and hub devices are freely rotating on the propeller shaft at least substantially sealingly in the chamber, each of the paddle and hub devices having first and second paddles that are fixed diametrically opposite each other with a hub therebetween. The hubs cooperate with each other so that the first paddle and hub device can also rotate relative to the second paddle and hub device, the hubs of the first and second paddle and hub means having end portions respectively extending from axially opposite ends of the chamber. Each of first and second gear trains has (A) a first ratchet for rotationally connecting a respective one of the hubs to the propeller shaft in a first rotational direction and disconnecting the one of the hubs from the propeller shaft in a second, opposite rotational direction and (B) a second ratchet with a gear reduction for reducing rotational speed relative to the rotational connection of the first ratchet and rotationally connecting the propeller shaft to the one of the hubs in the first rotational direction with the reduced rotational speed and disconnecting the propeller shaft from the one of the hubs in the second rotational direction. An inlet in a first quadrant of the chamber admits air into the chamber. A nozzle admits fuel into a third quadrant of the chamber An outlet in a fourth quadrant of the chamber exhausts.

10 citations


Network Information
Related Topics (5)
Sodium
68.9K papers, 1.2M citations
66% related
Electrolyte
124.6K papers, 2.3M citations
65% related
Heart rate
32.3K papers, 1M citations
65% related
Fluid dynamics
47.9K papers, 1M citations
64% related
Laminar flow
56K papers, 1.2M citations
64% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20242
202364
2022146
202143
2020174
2019272