102results about "Material removal/addition" patented technology

A chop saw, grinding wheel, or like apparatus is disclosed herein also incorporated to an easily portable dust collection system. In a preferred embodiment, a worktable is provided with a center slot for receiving a circular saw blade. A negative pressure and resulting air flow is provided at the center slot to capture particulate matter as a byproduct of cutting the workpiece. Side slots are also disclosed to assist in particulate collection. A unique filter chamber having a cylindrical filter is additionally provided to remove dust from air and discharge the filtered air at a lateral side of the apparatus. A filter cleaning knob is additionally disclosed to assist in cleaning the filter. Of the beneficial aspects of the chop saw with dust collection system is its portability being one integral unit and the dust filter being easily cleaned and maintained.

In a power tool dust collecting device, a blocking ring that is subject to elastic deformation upon contact with a workpiece surface for blockage between a suction head and the workpiece surface is provided to the front surface of the suction head to be brought into contact with the workpiece surface. The blocking ring has a ventilating portion (a V-shaped slit) that ensures the flow of air to the suction head regardless of whether the elastic deformation has occurred.

A dust box joined to a dust collecting device is formed of a box body, and a lid body that is joined to the box body by a hinge and can open and close an opening of the box body, and a main filter and a pre-filter are attached to the lid body.

A dust collecting attachment that is mounted on a sander includes a suction portion mounted on a portion of a front housing where an output shaft projects, a flexible hose having a front end of the flexible hose connected to the suction portion, a discharge portion connected to a rear end of the flexible hose and a changeable member placed on both a motor housing and the discharge portion. The changeable member allows the discharge portion to be mounted at any position around an axis of the motor housing.

A blasting chamber capable of conducting painting on a workpiece subsequent to a blasting process in the same working chamber is provided. A dust collection unit 20 that ventilates a main unit 10 during blasting work and a ventilation unit 30 that ventilates a main unit during a painting step are provided. A side wall 11 of the main unit is provided with an entrance 11a and an opening-and-closing member 11b that opens/closes the entrance, the dust collection unit is provided so as to project from a roof panel 15 to a floor panel 16 at a position closer to an other side wall 12 that is opposed to this side wall so as to partition the interior of the main unit, and a working space 10a and a ventilation duct 10b are defined in the main unit. A roof panel 15 above a working space has air suction holes 17 formed therein, and an intake opening 22 that communicates between the dust collection unit and the ventilation duct is provided. The side wall is provided with an opening 12a that communicates between the ventilation unit and the ventilation duct, and during the blasting process, ventilation is conducted with the dust collection unit with the entrance closed, and during painting, ventilation is conducted with the ventilation unit with the entrance opened.

The present invention relates to a method and a system for manufacturing wafer-like slices from a body of a substrate material, especially for use in the manufacture of semiconductor devices.

The method comprises providing a slicing device with a cutting wire equipped on its surface with abrasive particles; providing an aqueous cooling and lubricating fluid, said fluid having an ionic strength corresponding to an electrical conductivity of about 30 μS/cm or less; cutting said body with said cutting wire into slices while dispensing said cooling and lubricating fluid into a kerf area where said cutting wire contacts and cuts said body, said cooling and lubricating fluid promoting removal of powdered substrate material from said kerf area resulting in spent fluid; and removing said spent fluid from said cutting device and recovering said powdered substrate material from said spent fluid.

The system comprises a slicing device provided with a cutting wire, said cutting wire being equipped on its surface with abrasive particles, said slicing device comprising a dispensing unit for delivering a cooling and lubricating fluid to a kerf area where said cutting wire contacts and cuts said body; wherein said fluid promotes removal of powdered substrate material from said kerf area resulting in spent cooling and lubricating fluid; a draining unit for removing said spent fluid from said slicing device; and a fluid reclamation device for treating said spent fluid, said reclamation device comprising a first filtering unit for separating and recovering said powdered substrate material from said spent fluid and providing a reusable fluid.

Various aspects of an apparatus are disclosed. In a particular aspect, an apparatus comprising a cylindrical filter, a filter cleaning knob, and a filter cleaning flap is disclosed. Within such embodiment, the filter cleaning knob is configured to rotate the cylindrical filter. The filter cleaning flap is coupled to the cylindrical filter and configured to sequentially make contact with a plurality of pleated segments of the cylindrical filter as the filter cleaning knob is rotated.

To provide a formic acid decomposition apparatus and method, which can dispose of formic acid safely and quickly and determine the activity of a filled catalyst. The apparatus is for decomposing formic acid contained in exhaust gas exhausted from a soldering apparatus in which a surface oxide film is reduced with formic acid, into water and carbon dioxide. The apparatus has a formic acid decomposition part in which a formic acid decomposition catalyst is filled; a gas introduction pipe for introducing gas containing formic acid into the decomposition part; and a gas introduction unit for introducing oxygen or gas containing oxygen into the decomposition part. In the apparatus, the activity of the catalyst is determined on the basis of an amount of change of a catalyst temperature by heat generation during a decomposition reaction of formic acid. The method includes mixing exhaust gas containing formic acid exhausted from the soldering apparatus, and oxygen or gas containing oxygen such that a molar ratio of formic acid and oxygen (oxygen/formic acid) is 1.5 or more, and allowing the mixed gas to react in the presence of the catalyst to decompose formic acid into water and carbon dioxide.

The invention relates to a self-adoption multi-oil chamber constant static pressure system with a big flow variation range. The self-adoption multi-oil chamber constant static pressure system with the big flow variation range is composed of a variable oil supply module and a quantitative oil supply module or a plurality of quantitative oil supply modules. The variable oil supply module and the quantitative oil supply module are composed of a variable frequency motor, a motor, a metering pump, a one-way valve and an oil filter. An overflow valve is arranged between the variable oil supply module, the quantitative oil supply modules and a multi-point gear oil distributor. A pressure gage and a pressure sensor are arranged between the multi-point gear oil distributor and a work table constant static pressure guide rail. A static pressure oil chamber of the constant static pressure guide rail is provided with a temperature sensor. The variable oil supply module provides minimum flow required by a work table static pressure system and a certain flow range. The flow of the quantitative oil supply module is fixed and the value of the flow of the quantitative oil supply module is no less than flow changing value of the variable oil supply module and is used for expanding the flow variation range of the variable oil supply module. Therefore load bearing and automatic adjustment of a lifting range of the work table when a temperature variation range is large are achieved and reliable and stable rotation precision of the work table is guaranteed.