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42. 发明专利

JPS57195943A VIBRATION-PROOF RUBBER FOR ELEVATOR DOOR 失效
公开(公告)号：JPS57195943A
公开(公告)日：1982-12-01
申请号：JP7933281
申请日：1981-05-27
申请人： HITACHI LTD
发明人： MIMORI KIYOYASU , SATOU MASAYUKI , OONO MASAHARU , SEKI HIDEAKI
IPC分类号： F16F7/00 , B66B13/30 , E06B7/23
摘要： PURPOSE:To effectively cancel impact energy produced in an elevator door at time of closing by providing a projection capable of contacting corresponding to deformation of a rubber on a hollow interior of a doorstop rubber. CONSTITUTION:A doorstop rubber 31 is hollow and is provided with a projection (a) disposed on the inside thereof. When a door 1 is closed to bring the doorstop rubber 31 into contact with the opposite member to be gradually crushed, the projecting portion (a) is brought into contact with a rubber portion (c) contacing the door 1, and spring constant gradually increases at that position. As the doorstop rubber is further crushed, the projection is gradually compressed or buckled. At that time, the volume of the hollow portion has already been lessened so as to produce compression effect of the projecting rubber. It may be good that a plurality of projections (a) (b) having several heights are disposed to change spring constant gradually.

44. 发明专利

JPS55146275A WATER TURBINE RUNNER 失效
公开(公告)号：JPS55146275A
公开(公告)日：1980-11-14
申请号：JP5419079
申请日：1979-05-04
申请人： HITACHI LTD
发明人： MIMORI KIYOYASU , TAKAHASHI TAKAO , SATOU MASAYUKI , MORIGUCHI KAZUO
IPC分类号： F03B3/12
摘要： PURPOSE:To prevent a runner from being damaged by a method wherein a crown or a shrouded ring is thickened gradually toward the part of joint of a blade and thereby the vibration stress concentrating on the part is reduced in the runner of a pump and a water turbine. CONSTITUTION:In a turbine wheel having large capacity and operated at a high speed, a crown 1 and a shrouded ring 3 vibrate strongly in the axial direction by hydraulic pulsations, whereby the vibration stress occurs intensively in and around the joint of a blade. In order to prevent this intensive occurence of the vibration stress in the region, the thickness of the joint of the crown 1 and the shrouded ring 3 with the blade and its vicinity on the surface of the inner periphery of a runner is enlarged, while the thickness of the part from there to the vicinity of the center of a water inlet port 4 is lessened gradually. In addition, it is also possible that another thick part 64 is provided on the outer periphery of the runner, while the central part of the water inlet port 4 where the stress is small is thinned and filled with a damping material 84, thereby augmenting the damping effect.

47. 发明专利

JPS5556973A APPARATUS FOR CHECKING VIBRATION OF ROPE TYPE HYDRAULIC ELEVATOR 失效
公开(公告)号：JPS5556973A
公开(公告)日：1980-04-26
申请号：JP12847578
申请日：1978-10-20
申请人： HITACHI LTD
发明人： TAKENOSHITA MITSUAKI , SHIGETA MASAYUKI , SATOU MASAYUKI , KIDO YASUO
IPC分类号： B66B7/08 , B66B9/04 , F16F15/06

48. 发明专利

JPS54154372A SHADOW MASK MOUNTING DEVICE OF BRAUN TUBE 失效
公开(公告)号：JPS54154372A
公开(公告)日：1979-12-05
申请号：JP6233878
申请日：1978-05-26
申请人： HITACHI LTD
发明人： SATOU MASAYUKI , KITAMURA SHIGEKI
IPC分类号： H01J29/02 , G01L5/12
摘要： PURPOSE:To enable the mask to be mounted to a panel rapidly and surely with a simple constitution by inserting the shadow mask into the panel while pressing its springs then releasing the springs and applying vibrations to the mask. CONSTITUTION:After a shadow mask 6 is placed on a holder 3, a clamper 5 is moved and a frame 7 is held and fixed in a holder 3. Next, arms 8 are moved to the frame 7 side to press springs 9 and a rod 1 is ascended to insert the mask 6 into a panel 10. Thereafter, the arms 8 are spaced from the springs 9 and vibrations are applied to the holder 3 through coil springs 4 by driving a vibrator 2, then the mask 6 moves, causing the pins 11 of the panel 10 to engage in the mounting holes 12 of the springs 9. In this way, mounting of the mask 6 into the panel 10 is rapidly accomplished.

50. 发明专利

JPS5344808A CYLINDRICAL ROTOR 失效
公开(公告)号：JPS5344808A
公开(公告)日：1978-04-22
申请号：JP11855676
申请日：1976-10-04
申请人： HITACHI LTD
发明人： TAKAHASHI RIKUROU , SATOU MASAYUKI , FUJISAWA FUMIO
IPC分类号： H02K9/00 , H02K19/00 , H02K55/04
摘要： PURPOSE:To prevent generation of unstable vibrations by cooling a superconductive field winding with liquid helium or the like filling a porous cylinder provided within a torque tube concentric with the rotative cylinder.

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