摘要:
A tire wheel bearing apparatus comprises an outer member having multi rows of track surfaces integrally provided on an inner periphery, an inner member having a tire wheel mounting flange provided at one end thereof, a cylindrical small diameter step portion provided at another end thereof and double-rows of track surfaces formed on the inner wheels force fitted to the small diameter step portion so as to oppose to the track surfaces of the outer member, and double-rows of rolling elements respectively interposed between the track surfaces in the outer member and the inner member, the inner wheels being fixed to the inner member by radially outwardly caulking the end portion of the small diameter step portion of the inner member, the track surfaces in the outer member and the inner member and the rolling elements has a contact angle with a bearing clearance being set to be negative.
摘要:
Derivatives of hexafluoropropene dimer expressed by the following general formula ##STR1## in which R.sub.f represents (CF.sub.3).sub.2 C.dbd.C(CF.sub.2 CF.sub.3) or (CF.sub.3).sub.2 CH--CF(CF.sub.2 CF.sub.3) and R represents a hydrocarbon residue of a carboxylic acid having one free site capable of reacting with the dimer. A process for preparing the derivatives is also disclosed in which the dimer is contacted with the carboxylic acid in an inert solvent in the presence of a catalyst. Metal, amine or ammonium salts of the acid may be also used for the reaction, in which case the reaction is feasible in the absence of a catalyst.
摘要:
Oligomers of hexafluoropropene are prepared by oligomerization of hexafluoropropene in an organic solvent in the presence of a halide compound and a crown ether. The selectivity to the dimer or trimer may vary depending on the kind of solvent. For example, the oligomerization of hexafluoropropene in acetonitrile or methylene chloride in the vicinity of room temperature gives the dimer thereof at high selectivity. Use of N,N-dimethylformamide favors the formation of the trimer at high selectivity.
摘要:
A cylinder head is disclosed which can reduce external connections between engine exhaust ports and an exhaust conduit having an exhaust purifier. The cylinder head comprises a casting block formed with a plurality of exhaust ports, with a common port and with a plurality of passages communicating at one end with the common port. Each of the passages communicate with one of the exhaust ports.
摘要:
A recess-projection fitting structure includes projections extending in an axial direction on an outer diameter surface of a shaft section of an outer joint member or an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into contact and fitted with the projections by press fitting in the other of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in contact with each other through intermediation. An outer member is fitted in a hole of a knuckle of a vehicle. Annular grooves are formed respectively in an outer peripheral surface of the outer member and an inner peripheral surface of the hole of the knuckle, and a snap ring is engaged with both the annular grooves.
摘要:
A bearing device for a wheel is capable of suppressing radial play and allowing firm and easy connection between a hub and an outer ring of a constant velocity universal joint. Axially extending projections are provided on a shaft portion of a joint outer ring, and the shaft portion is press-fitted into a hole of a hub. Through this press-fitting, recesses held in close fit-engagement with the projections are formed by the projections in an inner diameter surface of the hub, forming a recess/projection fit-engagement structure in which the projections and the recesses are held in close contact with each other over an entire fit-engagement region thereof. A press-fitting margin (Δd) of the projections with respect to the hub and a height (h) of the projections are set to the following range: 0.3
摘要:
The method of storing profile set storage method according to the present invention comprising (a) selecting as reconstruction data that enables to reconstruct a profile set, either size prioritized data, which is smaller than said profile set, or reconstruction speed prioritized data, which enables to be reconstructed within a shorter time period than is required for reconstructing the size prioritized data, and which is smaller than the profile set but is larger than the size prioritized data; (b) for generating the selected reconstruction data based on the profile set; and (c) storing the reconstruction data generated in the step (b) in a storage device.
摘要:
A wheel bearing device, a method of assembling a wheel bearing device, an assembly configured by the wheel bearing device and a drive shaft, and a method of assembling the assembly, in which the wheel bearing device eliminates a nut tightening operation, is capable of reducing costs, and has a projection and recess mating structure that can firmly connect an outer joint member and a hub. Axial direction load is applied to a stepped surface is provided on an outer diameter surface of an outer joint member. A projection that extends in the axial direction and is provided on one of a stem shaft of the outer joint member and an inner diameter surface of a hole section of a hub is press-fitted into a partner member along the axial direction, As a result, a recess that is in close contact with the projection over an overall mating contact area is formed in the partner member, thereby configuring a projection and recess mating structure.
摘要:
According to one embodiment, a display device includes an operation module, a display module, a recorder, a compiling module, and a display controller. The operation module receives an operation from a user. The display module displays content in accordance with the operation. The recorder measures the display time of the content that is being displayed and records the display time for each content. The compiling module compiles statistical information relating to a preference of the user based on the display time recorded for each content. The display controller displays, among contents that have been previously stored, content matching with the preference of the user indicated by the statistical information on the display module.
摘要:
A storage unit stores data of a blood vessel image, a first mask image, and a second mask image of an object, an imaging unit which images a fluoroscopic image for the object. A subtraction unit subtracts the first mask image from the fluoroscopic image and generates data of a subtraction image. A calculating unit calculates anatomical displacement amount between the first mask image and the second mask image. A display unit displays the blood vessel image and the subtraction image so as to be superimposed each other by positioning the blood vessel image and the subtraction image to be fitted together on the basis of the calculated displacement amount.