摘要:
It is an object of the invention to provide a thread-forming tap to which a chamfer can easily be mounted, and a general threading method. The thread forming tap of the invention has a threaded portion comprising a tapered chamfer and a parallel threaded portion which is formed continuously with the chamfer. A depth of root of the chamfer is set equal to that of a root of the parallel threaded portion constantly.
摘要:
A tap having a reamer edge which is provided at a chamfer part, so that when the thread forming tap is pulled out after the internal thread is formed, a seam portion present at the crest of the internal thread is cut off, whereby even in a blind hole, formation of internal thread and cutting of the seam portion are performed in a single process, and formation of an internal thread and processing of an inside diameter portion are achieved in a single process to obtain concentricity in line with each other. Further, even if there is a deviation in diameter of the hole before threading, the inside of the internal thread is processed to a constant value.
摘要:
A fuel filling apparatus is provided. The fuel filling apparatus comprises an overfilling protective valve arranged in a fuel gas supply path for supplying a fuel gas to an automobile. The overfilling protective valve further comprises a fuel gas path, a valve unit for opening and closing the fuel gas path by a valve body, a valve body displacement means for displacing the valve body according to a filling pressure of the fuel gas, and a temperature modulating unit for modulating a temperature of the valve body displacement means. Even though a difference between the temperature of the fuel gas and the operation temperature of the overfilling protective valve is large, the temperature of the valve body displacement means can be maintained within the preset temperature range by the temperature modulating unit and the overfilling protective valve can be exactly operated under the preset pressure.
摘要:
The invention intends to provide a cell culture apparatus which is able to realize an adequate culture according to the culture state of cells while alleviating the labor of an operator. The cell culture apparatus includes a culture bag for causing the cells to proliferate, a cell inoculation cassette (or culture bag as an antibody stimulating and proliferation culture vessel) for stimulating the cells by an inducer for the proliferation, a culture medium cassette for storing a culture medium supplied to the culture bag and the cell inoculation cassette, a CCD camera 88 for acquiring images of the cells in the cell inoculation cassette, and an image processing computer and an operation control computer for determining the culture state (proliferation capability and proliferation ability of the cells) of the cells from the images of the cells acquired by the CCD camera, and causing a culture operation to be carried out on the basis of the determination.
摘要:
A fuel filling apparatus is provided. The fuel filling apparatus comprises an overfilling protective valve arranged in a fuel gas supply path for supplying a fuel gas to an automobile. The overfilling protective valve further comprises a fuel gas path, a valve unit for opening and closing the fuel gas path by a valve body, a valve body displacement means for displacing the valve body according to a filling pressure of the fuel gas, and a temperature modulating unit for modulating a temperature of the valve body displacement means. Even though a difference between the temperature of the fuel gas and the operation temperature of the overfilling protective valve is large, the temperature of the valve body displacement means can be maintained within the preset temperature range by the temperature modulating unit and the overfilling protective valve can be exactly operated under the preset pressure.
摘要:
Polyethylene and an ethylene-.alpha.-olefin copolymer are produced by polymerizing ethylene or a mixture of ethylene with an .alpha.-olefin having 3 to 18 carbon atoms by use of a coordination polymerization catalyst containing a transition metal compound and an organometallic compound, deactivating said catalyst by adding a copolymer of at least one monomer selected from the group consisting of vinyl monomers having a carbonyl group represented by the formula: ##STR1## wherein R.sup.1 represents a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms; R.sup.2 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms; M represents a metal element; and m represents the valence of M,or maleic anhydride with ethylene to be mixed with said catalyst, separating unaltered monomers from the polymer mixture.
摘要:
A high frequency receiver of the present invention has a mixer of which one input part is connected to an output part of a filter and the other input part is connected to an output part of a frequency-variable local oscillator, and an output terminal connected to an output part of the mixer. The mixer is an image rejection mixer. The filter has a moderated damping characteristic in a frequency where the image rejection mixer reduces an image. Therefore, a high performance filter is not required, and hence a low price is realized.
摘要:
Several embodiments of cooling arrangements for the pistons of an internal combustion engine operating on a two-cycle, crankcase compression principle. The cooling arrangement comprises a passage that is formed in the piston and which communicates the ports of the engine with each other when the piston is in confronting relationship with them so as to effect a cooling air flow across the piston through the communicating passage.
摘要:
The invention intends to provide a cell culture apparatus which is able to realize an adequate culture according to the culture state of cells while alleviating the labor of an operator. The cell culture apparatus includes a culture bag for causing the cells to proliferate, a cell inoculation cassette (or culture bag as an antibody stimulating and proliferation culture vessel) for stimulating the cells by an inducer for the proliferation, a culture medium cassette for storing a culture medium supplied to the culture bag and the cell inoculation cassette, a CCD camera 88 for acquiring images of the cells in the cell inoculation cassette, and an image processing computer and an operation control computer for determining the culture state (proliferation capability and proliferation ability of the cells) of the cells from the images of the cells acquired by the CCD camera, and causing a culture operation to be carried out on the basis of the determination.
摘要:
A fuel filling apparatus is provided. The fuel filling apparatus comprises an overfilling protective valve arranged in a fuel gas supply path for supplying a fuel gas to an automobile. The overfilling protective valve further comprises a fuel gas path, a valve unit for opening and closing the fuel gas path by a valve body, a valve body displacement means for displacing the valve body according to a filling pressure of the fuel gas, and a temperature modulating unit for modulating a temperature of the valve body displacement means. Even though a difference between the temperature of the fuel gas and the operation temperature of the overfilling protective valve is large, the temperature of the valve body displacement means can be maintained within the preset temperature range by the temperature modulating unit and the overfilling protective valve can be exactly operated under the preset pressure.