摘要:
In order to reduce the sound pressure levels of abnormal sound called "squeal" and the sound of the cage that are produced during the operation of radial rolling bearings, the radial rolling bearing according to the present invention satisfies the following relations: 1.5.times.10.sup.-3 D.ltoreq.H.ltoreq.9.0.times.10.sup.-3 D and A/B=0.6-1.0, where D=diameter of the outer peripheral surface of cage 5a; H=thickness of annular gap 9 between the inner peripheral surface of flange 10 formed at an end portion of outer race 2a and the mating outer peripheral surface of the cage 5a; A=axial length of the outer peripheral surface of an end portion of the cage 5a; B=axial length of the mating inner peripheral surface of the flange 10.
摘要翻译:本发明的径向滚动轴承为了降低在径向滚动轴承的运转过程中产生的称为“尖叫”的异常声音和保持架的声音的声压级,满足以下关系:1.5×10 -3 D = H <= 9.0×10 -3 D,A / B = 0.6〜1.0,其中D =保持架5a的外周面的直径; H =形成在外圈2a的端部的凸缘10的内周面与保持架5a的配合外周面之间的环状间隙9的厚度; A =保持架5a的端部的外周面的轴向长度; B =凸缘10的配合内周面的轴向长度。
摘要:
A color-cathode ray tube having a shadow mask with improved aperture arrays. The aperture arrays are spaced at appropriate intervals and are curved to suppress local doming of the effective part of the shadow mask and to prevent electron-beam mislanding from occurring on a phosphor screen. The distance between any two adjacent apertures is expressed as: PH(N)=A+BN.sup.2 +CN.sup.4, where PH(N) is the distance between the (N-1)th and Nth arrays and A, B, and C are fourth-degree functions of a Y-coordinate. The apertures along a long side of the effective part of the shadow mask in a section extending for one-fourth of a width of the effective part of the shadow mask from a short side of the effective part of the shadow mask are inclined in an opposite direction to the apertures within the section and located one-third of a height of the effective part of the shadow mask from the long side.
摘要:
A hydrostatic gas bearing comprises a pair of bearing structural members 4 which make up an inner ring 3 and each have a frusto-conical engaging face 5 formed on the radially outer peripheral surface thereof, a pair of bearing members 2 which are fixed to the respective bearing structural members 4, and each formed with a radially inner engaging face 6 for engagement with the taper of the engaging face 5, and an outer bearing surface 10 which is aligned parallel to the inner engaging face 6, wherein since each bearing member 2 is pressed in an axial direction by an attachment member 7 and thereby fastened with a uniform pressing force to the bearing structural member 4, positional displacement of the bearing member 2 relative to the bearing structural member 4 and uneven deformation of the bearing member 2 can be suppressed so that bearing characteristics can be maintained in a simple structure.
摘要:
A cryostat comprising a cryogenic vessel for storing a cryogen therein, a port pipe disposed at a portion of the vessel for holding one end of a supply pipe for supplying the cryogen to the vessel thereby allowing the cryogen to flow into the vessel while the very low temperature liquid cryogen is being supplied from the exterior to the vessel, and a cryogen supply pipe disposed in the vessel so as to be spaced apart from the port pipe, further the cryogen supply pipe having a receiving portion for receiving the cryogen from the supply pipe during the supply of the cryogen.