摘要:
A toothbrush having two types of bristle end forms. Filaments, each having a tapered end and a ball-like end, are bundled, and folded in to a U-shape bend in a manner that the tapered end is projected from the ball end. The tapered end is inserted into a periodontal pocket by the projected length.
摘要:
A blower includes a plurality of rotatable impeller vanes operable to impel air. The impeller vanes create an air pressure differential thereacross when rotated, and each of the impeller vanes has a porous central portion made of sintered resin material. The porous central portion has a plurality of pores therein which permit a portion of air to pass through the porous central portion from a relatively high air pressure side to a relatively low air pressure side of the impeller vanes. Each of the impeller vanes also has a non-porous portion surrounding the porous central portion. The non-porous portion is made of a solid resin material which prevents air from passing therethrough.
摘要:
The disclosure is directed to an improved rotary compressor of a closed type which is provided with a pressure introducing passage communicated at its one end, with a compression space within a cylinder, and at its other end, with a small volume space formed in the cylinder portion for reducing high frequency component in the cylinder inner pressure so as to reduce undesirable noises during operation of the compressor.
摘要:
An outdoor unit of a separate type air conditioner has suction ports and a blow-out port which can be disposed freely on the same side of the unit. Also, an outdoor unit of a one-side suction and exhaust type is excellent in static pressure characteristic, sufficient in air flow rate using only one blower, and is easy to install. Suction ports (8) are disposed at both sides in the front side of an outdoor unit main body (outer case 7), and a blow-out port (6a) is disposed in the center of the front side. A heat exchanger (3), an orifice (5), and one centripetal fan (1) are sequentially disposed behind the blow-out port (6a), thereby forming a draft circuit for sucking air from the suction ports (8) at the outer circumference of blades (1a) of the centripetal fan (1). The air is blown out ahead of the blades (1a) through the orifice (5) and heat exchanger (3). Therefore, since suction space is not required, the outdoor unit can be installed close to a wall. In addition, by the use of the centripetal fan (1), a sufficient air flow rate is obtained with only one blower, and the size of the outdoor unit for producing a same capacity may be kept to a minimum.
摘要:
A scroll compressor comprises a generally cylindrical casing and stationary and orbiting scrolls both accommodated in the casing. The stationary and orbiting scrolls engage with each other to define a plurality of compression chambers therebetween. The orbiting scroll is driven by a drive shaft which is in turn supported by a frame having a thrust bearing formed thereon. One of an orbiting end plate of the orbiting scroll and the thrust bearing has an annular groove defined therein in which an annular seal member is received. The orbiting scroll is disposed between the stationary scroll and the frame with an axial gap defined therebetween. First, second, and third back chambers are formed on the opposite side of the compression chambers with respect to the orbiting end plate. The first and second back chambers are partitioned by the annular seal member. The second back chamber is provided radially outwardly of the first back chamber and between the orbiting end plate and the thrust bearing, while the third back chamber is provided radially outwardly of the second back chamber. Oil passages are provided to introduce lubricating oil accommodated in the casing into the first chamber in which a discharge pressure acts. The oil passages act to supply part of the lubricating oil to the second chamber and then to the third chamber while reducing the pressure of the lubricating oil until the lubricating oil is eventually introduced into the suction chamber.
摘要:
An impeller of a multiblade blower having at least two circular end plates or partition plates spaced apart from each other, and a plurality of blades disposed between the peripheral portions of the partition plates. Each of the blades is formed with a cylindrical portion having a uniform cross-sectional area, at the outer peripheral end thereof on the outer peripheral side of the impeller. The cylindrical portion has a diameter which is larger than the thickness of the blade at the outer peripheral end thereof so that the cylindrical portion is projected from both front and rear surfaces of the blade at the outer peripheral end of the latter.
摘要:
An information processing apparatus comprises a plurality of control units, a shared memory, a processing number table and a start-up time table. When a transaction is received, each of the control units determines whether the current time in the shared memory coincides with the most recent start-up time in the processing number. If the current time does not coincide with the most recent start-up time, each of the control units updates the most recent start-up time with current time and if or not, adds 1 to the number of transactions being processed in the processing number table so as to update the number of transactions being processed. After the number of transactions is updated, each of the control units sums up the number of transactions being processed in the processing number table. Each of the control units determines whether the number of transactions is not more than the threshold value in the shared memory. If the number of transactions is not more than the threshold value, each of the control units starts the distributed transaction to be processed.
摘要:
Address filters 3-0 to 3-m take only those of unicast packets which are addressed to output ports corresponding to them, and an address filter 4 for multicasting takes only multicast packets. When multicast packet output buffers 5-0 to 5-m receive output permissions from output arbitrators 6-0 to 6-m, they send out packets in the accumulation order thereof to corresponding OR gates 9-0 to 9-m for being outputted to output ports. A multicast packet output buffer 7 outputs packets to the output ports when they obtain output permissions from the output arbitrators 6-0 to 6-m corresponding to the output ports, which output data for multicasting from a bit map table 8 are to be outputted from.
摘要:
An a backpressure-type cell flow control for a square-grid expanded ATM switch achieving fair cell flow control between input port lines is disclosed. In a square-grid expanded switch, a backpressure controller generates a backpressure control signal when an amount of data stored in an output buffer exceeds a predetermined threshold, to avoid an overflow of the output buffer. When a backpressure control signal is generated by at least one of backpressure controllers belonging to a corresponding column, a common backpressure control signal is output to a plurality of input buffers storing data to be forwarded to an output port associated with the output buffer.
摘要:
A scroll compressor has a check valve assembly for selectively opening and closing a discharge port and allowing a fluid to flow only from the discharge port towards a discharge chamber. A stationary end plate mounted in the scroll compressor has a plurality of bypass holes defined therein at locations symmetrical in terms of pressure. The plurality of bypass holes are open to compression chambers closest to the discharge port and communicate with the discharge chamber. The stationary end plate also has at least one bypass valve for selectively opening and closing the bypass holes and allowing the fluid to flow only from the compression chambers towards the discharge chamber through the bypass holes. The bypass holes are serviceable to prevent an excessive compression and are positioned so as not to be closed by an orbiting scroll wrap immediately after the compression chambers closest to the discharge port have communicated with the discharge port.