Paddle

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

Accelerometer with rebalance coil stress isolation

Abstract: An improved technique for mounting a coil to a paddle in a force rebalance accelerometer so as to provide relief from temperature induced strains without increasing the mass of the proof mass. The coil (30) is mounted to the paddle (54, 104) at a plurality of mounting sites (60, 62, 64, 110, 112, 114) on the paddle, at least one (62, 64, 112, 114) of which is connected to the paddle by suspension means (76, 78, 86, 88, 120, 122, 130, 132) compliant for movement in the plane of the paddle. In a preferred arrangement, three mounting sites are used, two of which are moveable (62, 64, 112, 114) towards and away from the third, fixed mounting site (60, 110).

High-sensitivity parametrically amplified chemo-mechanical vapor sensors

Abstract: In this paper we present a new kind of high sensitivity chemo-mechanical sensors. These devices consist of a torsional conductive see-saw paddle suspended by two torsional springs from a substrate with symmetric electrodes under each paddle wing. One of the wings is coated with a thin chemically sensitive polymer layer that swells when a specific compound vapor is absorbed. The absorption induced swelling thus causes wing bending and downward deflection proportional to the vapor concentration. Upon application of a fixed DC bias, the deflection is parametrically amplified causing a much larger deflection, and pull-in instability. A sufficiently large amplification results in unstable equilibrium of deflected paddle wing causing it to snap. This amplified drive mechanism does not consume any power, yet it can magnify the observed deflection by one or two orders of magnitude. This deflection is measured through a profilometer as well as a change in capacitance. We present the theory, fabrication and testing results of these sensors.

Double-paddle peroneal flap for extensive lip defect reconstruction

Abstract: Introduction Today, reconstructive surgeons offer an array of options to reconstruct the lip defects. Herein we present our experience of using free double-paddle peroneal flaps for extensive lip defect reconstruction. Patients and Methods From 1996 to 2014, 16 patients with extensive lip defects after tumor ablation were included. Free double-paddle peroneal flaps were used for reconstructions. In terms of flap design, one skin paddle superiorly placed on the lateral lower leg was used to reconstruct intraoral defects, whereas the other was inferiorly located and was used to reconstruct extraoral defects. A part of the inner skin paddle was everted, and the suture line with the outer skin paddle became the new vermilion border. A portion of the outer skin paddle could be de-epithelized and tucked into the fold of the inner skin paddle, leading to greater fullness of the new lip. Results Skin paddle sizes were 10–15 cm × 3–13 cm and 4–10.5 cm × 2.5–10.5 cm. Venous thrombosis occurred in one patient but was salvaged, and one flap had superficial necrosis over the outer paddle that was conservatively treated. In the 0.5–33 month follow-up period, all patients were able to close their mouths without obvious drooling. Conclusion Free double-paddle peroneal flap transfer could augment lip definition, deepen the labial vestibule, and provide an acute-angle oral commissure, leading to satisfactory oral competency and improved cosmetic results. Therefore, this technique may be considered a viable option for extensive lip defect reconstruction.

Variable paddle reaction kettle

Abstract: The utility model discloses a variable paddle reaction kettle which comprises a reaction kettle cylinder, a bracket, a stirring rod, a motor, a plurality of fixed blades and a sliding sleeve, wherein the bracket is mounted on the reaction kettle cylinder; the stirring rod is arranged inside the reaction kettle cylinder; the motor is mounted on the bracket; the plurality of fixed blades are transversely mounted at the bottom of the stirring rod; the sliding sleeve is sleeves the stirring rod in a sliding manner. In initial stirring, because of high viscosity, a driving device is used for driving the sliding sleeve to move upwards to pull moving blades through a pull rod to rotate relative to the fixed blades through a rotating shaft, so that an anchor type stirrer structure is formed, and liquid with relatively high viscosity can be sufficiently and uniformly stirred. After the liquid is stirred for a certain time and the viscosity is reduced, the driving device is used for driving the sliding sleeve to move downwards, and the moving blades are driven by the pull rod to be parallel to the fixed blades, so that a paddle type stirrer structure is formed, a motor rotates to drive the stirring rod to rotate, and the moving blades and the fixed blades are driven to rotate to stir up the liquid. Therefore, due to adoption of a paddle type stirrer, the liquid flows in the axial direction, and the stirring efficiency is improved.

Reverse stirring mixing machine

Abstract: The utility model relates to the field of processing, and in particular relates to a reverse stirring mixing machine The reverse stirring mixing machine comprises a rack, a motor, a shell, a stirring barrel and a stirring paddle, wherein the motor is fixed on the rack; the shell is arranged on the rack; the stirring barrel is positioned inside the shell; the stirring paddle is positioned inside the stirring barrel; the stirring barrel is fixed on a stirring barrel shaft; the stirring paddle is fixed on the stirring paddle shaft; a barrel cover is arranged on the stirring barrel; the motor is a double-output shaft motor; the upper end shaft extension end of the motor is in transmission connection with the stirring paddle shaft through a first transmission belt, and the lower end shaft extension end of the motor is connected with a middle rotating shaft through a second transmission belt; a first gear is fixed on the middle rotating shaft; a second gear is fixed on the stirring barrel shaft; the first gear and the second gear are engaged with each other When the stirring mixing machine works, the rotating directions of the stirring paddle and the stirring barrel are opposite, and thus materials are mixed relatively uniformly; moreover, the stirring mixing machine is simple and compact in structure, small in occupying area and convenient to carry