摘要:
In a single-ended swash plate compressor, unbalanced thrust loads in either axial direction are reduced so that thrust loads acting on pistons in the direction of the front end are practically balanced by those in the direction of the rear end, for example, by connecting an intake chamber to a swash plate chamber by means of an adjustment valve to adjust the pressure in the swash plate chamber acting on the front end surfaces of the pistons to a suitable intermediate pressure by the action of the adjustment valve. In a single-ended swash plate compressor with pistons housed in both ends of a cylinder assembly comprising one set of pistons for guidance and another set for compression, discharge pressure is introduced into some of the cylinder bores housing guide pistons and intake pressure is introduced into the cylinder bores housing guide pistons into which discharge pressure is not introduced.
摘要:
A variable displacement compressor includes a rotary valve which can rotate synchronously with a drive shaft. The rotary valve includes a center hole with one end closed and with the other end in constant communication with a suction chamber, and a communicating hole intermittently provide a fluid communication between the center hole and a gas extracting passage extending from a crank chamber along with the rotation of the rotary valve. The amount of refrigerant gas flowing back from the crank chamber to the suction chamber through the gas extracting passage is reduced by exactly the amount of the refrigerant gas which can flow through the gas extracting passage unless it is closed by the rotary valve. Therefore, even if the sectional area of the gas extracting passage is increased to an extent of being able to prevent sludge and other foreign matter from clogging it and ensure the processing accuracy and productivity, the increase of the amount of gas fed to the crank chamber at the time of transition from a large displacement operation to a low displacement operation, and the increase in the power loss of the compressor, can be suppressed.
摘要:
Disclosed is a novel renin-active substance by utilizing a anti-peptide antibody capable of specifically recognizing a specific amino acid sequence in the human propenin profragment exemplified, as a typical example, by a complex formed from human prorenin and an anti-peptide antibody capable of specifically recognizing an amino acid sequence consisting of at least 15 amino acid residues located within an amino acid sequence consisting of 33 amino acid residues between the isoleucine residue at the 11th site and the arginine residue at the 43rd site within human propenin profragment having an amino acid sequence consisting of 43 amino acid residues.
摘要:
A multistage compressor for compressing a refrigerant for an automobile air conditioning system includes a body which has a front housing and a rear housing connected to each other with a cylinder block clamped therebetween. The cylinder block includes a plurality of sets of cylinder bores arranged parallel to, and around the longitudinal axis. Pistons are received within the cylinder bores to define a plurality of sets of compression chambers together with the walls of the cylinder bores. The sets of the compression chambers are fluidly connected to each other to provide a series of stages for compressing the refrigerant gas. The cylinder bores are arranged at equal angles around the longitudinal axis in each set of the compression chambers whereby the unbalanced force on the swash plate and the drive shaft is removed.
摘要:
The present invention relates to transgenic rats in the genome of which at least one human gene is integrated the gene product of which participates in blood pressure control. More specifically, the invention relates to transgenic rats and their offspring exhibiting increased blood pressure (>90/>140 mm Hg) or high blood pressure (>95/>160 mm Hg). Finally, the invention relates to processes for the production of the transgenic rats of the present invention and their offspring and their use for pharmacological tests.
摘要:
A wave cam type compressor is described. Cylindroid blocks are provided to support a drive shaft and to contain a plurality of cylinder bores centered around the drive shaft. A wave cam attached to the drive shaft has cam surfaces on the front side and the rear side. The cam surfaces are composed of convex surfaces only. Pistons in the cylindroid blocks are operated by the wave cam through shoes. Each shoe has a spherical surface and a flat surface. The spherical surface is fitted in a recess formed on the piston, while the flat surface makes line contact with the cam surface of the wave cam. The shoes move relative to the wave cam on a predetermined circular path on the cam surfaces. The rotation of the wave cam together with the drive shaft is converted to reciprocating motions of the pistons in the cylinder bores with the aid of the shoes and wave cam, thus achieving compression of a fluid supplied to the cylinder bores.
摘要:
A method for securing optical parts together with a ring member enclosing it and functioning as a balance weight and/or a lens guard member to a support member with adhesive. The ring member is provided therein with at least one groove formed through the wall of the ring member by cutting away one portion thereof, and the optical parts, the ring member and the support member are disposed so that the optical parts and the support member may be respectively positioned adjacent both ends of the groove, and those three members are secured with adhesive applied onto the groove. With the method, those three members are simply secured to one another in one process.
摘要:
An apparatus which inspects a profile of each rod of a bundle of rods assembled in a cluster includes a holding device for holding a rod, a profile detection sensor for detecting the profile of the rod, a reference position setting device for setting a reference position of the rod, a position detection device for detecting an inspection position of the rod with respect to the reference position and a signal processing and display device for processing and displaying signals from the profile detection sensor and the position detection device. Particularly, the profile detection sensor includes a cylindrical shell into which the rod is inserted, a single or a plurality of strain gauge type sensors disposed in the shell and brought into contact with an external surface of the rod to detect the profile of the rod, a drive motor and a mechanism thereof for rotating the shell about the rod and a drive motor and a mechanism thereof for slidably moving the shell in the longitudinal direction of the rod.
摘要:
An nuclear fuel assembly including an instrumentation tube adapted for insertion of an in-core detector tube and at least two equi-angularly disposed springs for holding the in-core detector tube concentrically within the instrumentation tube to prevent detector tube vibration is related herein. The springs are preferably secured to the inner surface of the instrumentation tube immediately above the bottom nozzle. An extension sleeve may be provided which extends upwardly or downwardly from the bottom nozzle to surroundingly receive the in-core detector tube. This will effectively increase the axial length of the in-core detector tube that is likely to abut the inner surface of the extension sleeve thus rendering the in-core dectector tube less susceptible to wear due to reactor coolant flow induced vibration.