摘要:
An adjusting member may cause an axis line of connection end portions and an axis line of a housing side flange portion to be eccentric with respect to each other. The connection end portions and the housing side flange portions may be connected and the first attaching portion and the second attaching portion may be rotated to compress a sealing member. The position where the sealing member contacts an end face of the connection end portions may change by rotating each attaching portion and two connection targets can be directly connected.
摘要:
An LED lighting apparatus can be configured to supply a number of LEDs connected in series with a requisite voltage and power even if an amount of forward voltage of the LEDs connected in series is larger than a supply voltage of a battery. The LED lighting apparatus can include a boosting circuit and an inverted boosting circuit. LEDs can be connected between outputs of the boosting circuit and the inverted boosting circuit. The LED lighting apparatus can also include a current detection circuit configured to detect an LED current, and can include a dual PWM control IC configured to control the boosting circuit and the inverted boosting circuit in accordance with the LED current detected by the current detection circuit so as to keep the LED current substantially constant. The LED lighting apparatus can include a shutdown circuit to stop supplying a power supply when a load that includes the LEDs is in a circuit that is either opened or shorted.
摘要:
In a dampening water measuring apparatus, light emitted from a semiconductor laser has its beam expanded by an objective lens, and is then reflected by a beam splitter to irradiate a non-image area on a surface of a printing plate P. The laser beam reflected from the non-image area on the surface of the printing plate passes through the beam splitter, and enters a CCD camera. The CCD camera measures speckle intensity of the incident laser diffused light, and transmits measurements to a controller through an interface.
摘要:
There are provided a polyalkenyl ether type polyurethane, which is excellent in flexibility, aor the like, and which has in the molecule, a structural unit represented by formula (XXX): (wherein n represents an integer of 2 to 1000, R1 represents substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or substituted or unsubstituted aralkyl, and R2, R3 and R4, which are the same or different, each represent a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl or substituted or unsubstituted aralkyl, and R1s, R2s, R3s, and R4s, when they are each present two or more in number, may be respectively the same or different), and the like.
摘要:
The present invention provides a polyester and a polyurethane each having, in the molecule, a structural unit represented by formula (I): (wherein, R1, R2, R3, R4, R5and R6, which are the same or different, each represent a hydrogen atom or lower alkyl, provided that at least one of R1, R2, R3, R4, R5 and R6 is lower alkyl), and being excellent in hydrolysis resistance.
摘要翻译:本发明提供一种聚酯和聚氨酯,在分子中具有由式(I)表示的结构单元:(其中R 1,R 2,R 3,R 4,R 4, R 5,R 3,R 3,R 3,R 4,R 3,R 3,R 3, R 5和R 6为低级烷基),耐水解性优异。
摘要:
A diaphragm-type pumping apparatus (1) includes a pair of diaphragms (12), each defining a fluid delivering chamber (14) and a working fluid chamber (15), a main body section (2) operatively supporting a center rod (11) so as to allow a reciprocating motion thereof, and a pair of casing members (3), arranged so as to hold the main body section 2 from opposite sides thereof and functioning in association with the main body section (2) to clamp the peripheral portions (42), of the respective diaphragms (12), from opposite sides along a thickness direction thereof. The diaphragm has an annular lip section (43) extending in either side along a direction of the reciprocation motion of the center rod (11) and also along the thickness direction of the diaphragm 12. An annular wall section (28) for defining an annular recess (27) is formed in the casing member (3), and an annular threaded member (44) is engaged with an outer surface of the annular wall section (28) for compressing the annular lip section (43) against the main body section (2) and the casing member (3).
摘要:
The present invention provides a polyurethane exhibiting a superior adhesive property, bonding property, weather resistance, water resistance, and the like, and comprising in a molecule: an acidic group which is neutralized by a basic compound; and a structural unit represented by general formula (I): (in the formula, R1 and R2 are identical or different, and represent a lower alkyl group).
摘要:
The present invention provides a polyester polyol comprising within its molecular structure both structural units respectively represented by the following general formula (I) and general formula (II). In addition, the present invention provides a polyurethane using the polyester polyol of the present invention. This polyurethane exhibits excellent resistance to hydrolysis, resistance to alkali, mechanical strength, and the like. ##STR1## (wherein R.sup.1 and R.sup.2 are the same or different and each represents lower alkyl having 1 to 8 carbon atoms), ##STR2## (wherein R.sup.3 and R.sup.4 are the same or different and each represents lower alkyl having 1 to 8 carbon atoms).
摘要:
A trunk line identification system includes a line switch part connected to each of a plurality of channels of a transmission line, channel processing parts for processing signals received from and transmitted to the transmission line via the line switch part, where the channel processing parts are provided with respect to each of the channels and include first and second parts, and a switching system for switching signals. When relaying a signal received by a first channel processing part from the transmission line via the line switch part to the transmission line via the switching system and a second channel processing part, the first part of the second channel processing part transmits an identification signal to the first channel processing part via the switching system, and the second part of the first channel processing part judges whether or not a line being used is a trunk line based on whether or not the identification signal is detected.
摘要:
The disclosed safety device includes a barrier member disposed on a departure landing in front of a guide port for receiving a moving handrail after having been turned in its traveling direction. The barrier member is provided on the upper surface with a C-shaped groove having an opening narrower than the width of the handrail and formed of two sections of easily destructable material divided in a plane extending lengthwise of the groove. The handrail is loosely inserted into the groove. The barrier member may be provided on each of its lateral side surfaces with a notch in the form of a semi-arch.