Abstract:
An electric lawn mower may include a mower body including an electric motor, a cutting blade rotatably driven by the electric motor for mowing a lawn, and a battery mount configured to hold a battery where the electric motor is driven by electric power from the battery, and the battery is mountable on the battery mount at a mount position where the battery is positioned higher than the electric motor and rearward of an axis of the electric motor.
Abstract:
A wiper holder to which a wiper is attached has an attachment surface including a positioning boss configured to position the wiper by being passed through a positioning hole in the wiper, a positioning protrusion configured to position a first edge of the wiper, and a swage boss configured to receive a second edge of the wiper. The first edge of the wiper contacts the positioning protrusion to position the first edge of the wiper and the wiper is secured to the wiper holder by the swage boss being swaged while the positioning boss is passed through the positioning hole in the wiper and the second edge of the wiper being received by the swage boss.
Abstract:
A system stores identification information for identification of a part associated with installation information for designation of a position where the part is installed in a first apparatus; receives the identification information about the part to be read and transmits it by a second apparatus; and retrieves the received identification information from the storage unit, and generates a first composite image by combining installation information corresponding to the retrieved identification information with an image of the first apparatus.
Abstract:
A prior simulation of a velocity field and a temperature field is carried out, and snapshot data of the velocity field and that of the temperature field are collected during the prior simulation. Then principal component analysis on the collected snapshot data obtains velocity-field and temperature field dimension transformation matrixes, on the based on which the analysis models of the velocity field and temperature field having respective first degrees of freedom are converted into reduced degree-of-freedom models. Consequently, a simulation of the velocity field and the temperature field is carried out using models having respective reduced degrees of freedom (i.e., second degrees of freedom).
Abstract:
An injection-molded body according to the present invention includes a tubular body portion, an airtight seal surface formed on a peripheral surface of the body portion near one end of the body portion, and a plurality of undercuts disposed at positions around the peripheral surface of the body portion that are closer to the end than the airtight seal surface is. The undercuts prevent a seal member mounted on the airtight seal surface from falling off, in which a clearance is formed between a peripheral wall and the undercuts. The peripheral wall defines an inner hole of the body portion, and the clearance accommodates deformation of the undercuts in radial directions.
Abstract:
A tool unit for a cutting device includes a rotary blade, a blade case for covering at least a part of the blade case, and a drive device mounted to the blade case for rotatably driving the rotary blade. A handle is attached to the drive device. The blade case has a front support portion. The handle has a rear support portion. When the tool unit is used for a portable cutting device, the front support portion can be vertically pivotally supported by a front portion of the base, and the rear support portion can be supported by a guide member such that a position of the rear support portion can be changed relative to the guide member for enabling adjustment of a cutting depth of the rotary blade into the workpiece. When the tool unit is used for a table cutting device, the front support portion can be vertically pivotally supported by the table.
Abstract:
A polyfluoroalkyl alcohol, or a (meth)acrylic acid derivative thereof, represented by the following general formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOR (R:H or (meth)acrylic acid group; n: 1-6; a: 1-4; b: 1-3; and c: 1-3). Polyfluoroalkyl alcohol (R: hydrogen atom) can be produced by reaction of fluoroalkyl iodide represented by the following general formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cI with N-methyl formamide, followed by hydrolysis in the presence of an acid catalyst, whereas polyfluoroalkyl alcohol (meth)acrylic acid derivative (R: (meth)acrylic acid group) can be produced by reaction of the polyfluoroalkyl alcohol with (meth)acrylic acid.
Abstract:
A battery-operated driver-drill (1) includes an epicycle reduction gear unit (8) which encases a switchover sleeve (26) having inner teeth (27) and outer teeth (28). The gear unit (8) is rotatably mounted on second and third internal gears (19, 20) and integrally slidably connected with a slide pate (37). By operating the slide plate (37), the switchover sleeve (26) may be slid between a first position, in which the slide plate (37) engages one of the second and third internal gears (19, 20) while engaging axial ridges (29) of a first gear case (5), and a second position, in which the slide plate (37) simultaneously engages both the second internal gear (19) and a first carrier (10) adjacent to the second internal gear (19) while disengaged from the axial ridges (2).
Abstract:
A battery-operated driver-drill (1) includes an epicycle reduction gear unit (8) which encases a switchover sleeve (26) having inner teeth (27) and outer teeth (28). The gear unit (8) is rotatably mounted on second and third internal gears (19, 20) and integrally slidably connected with a slide plate (37). By operating the slide plate (37), the switchover sleeve (26) may be slid between a first position, in which the slide plate (37) engages one of the second and third internal gears (19, 20) while engaging axial ridges (29) of a first gear case (5), and a second position, in which the slide plate (37) simultaneously engages both the second internal gear (19) and a first carrier (10) adjacent to the second internal gear (19) while disengaged from the axial ridges (2).
Abstract:
There is disclosed an improved method of treating a spent electrolyte of copper from a cell for electrolytic refining of copper for the purpose of purification and reuse of the spent electrolyte. The process comprises the steps of: pretreating the spent electrolyte for removing copper therefrom until the copper content is greatly reduced but still remains at a level which is substantially higher than the total content of various metal ion impurities, preferably to a concentration of 10-13 g/l of Cu; blowing a hydrogen sulfide gas into the pretreated solution at a temperature of 40.degree. C. or higher until the redox potential of solution becomes a certain predetermined value to precipitate metal ions; filtering the treated solution to separate the residue available as a raw material for copper smelting from a filtrate which consists essentially of sulfuric acid; and returning the filtrate to the cell for electrolytic refining of copper.
Abstract translation:公开了一种改进的方法,用于从用于铜的电解精制的电池处理铜的废电解质,以用于废电解质的净化和再利用。 该方法包括以下步骤:对用于除去铜的废电解质进行预处理,直到铜含量大大降低,但仍保持在基本上高于各种金属离子杂质的总含量的水平,优选浓度为10-13 g / l的Cu; 在40℃或更高的温度下将硫化氢气体吹入预处理溶液中,直至溶液的氧化还原电位达到一定的预定值以沉淀金属离子; 过滤处理过的溶液,从基本上由硫酸组成的滤液中分离作为铜熔炼原料可得到的残留物; 并将滤液返回到电解铜的电解精炼。