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1. 发明授权

US3489260A Planar reciprocation type escalator 失效
标题翻译：平面台式自动扶梯
公开(公告)号：US3489260A
公开(公告)日：1970-01-13
申请号：US3489260D
申请日：1967-08-29
申请人： HITACHI LTD
发明人： HARA TAKESHI , TERANISHI KATSUYA , WATANABE MAMORU , ICHIRYU KEN , TAKENOSHITA MITSUAKI
IPC分类号： B66B21/08
CPC分类号： B66B21/08

2. 发明专利

DE2245428A1 未知
公开(公告)号：DE2245428A1
公开(公告)日：1973-04-05
申请号：DE2245428
申请日：1972-09-15
申请人： HITACHI LTD
发明人： TAKENOSHITA MITSUAKI , FUJISAWA FUMIO , NAKAMURA ICHIRO
IPC分类号： B66B1/36 , B66B1/04 , B66B1/26 , B66B1/44
摘要： In a hydraulic elevator of the type comprising a cylinder, a plunger vertically movably received in said cylinder and a cage carried on said plunger, said plunger being moved up or down by pressurized oil supplied into or discharged from said cylinder, means for detecting an upward or downward displacement of the cage occurring incident to unloading or loading of a load when the cage is in its stopping position is provided, so that the pressurized oil may be supplied into the cylinder upon occurrence of downward displacement of the cage and discharged from said cylinder upon occurrence of upward displacement of the cage, whereby the cage is readily brought to a level flush with the floor level.

3. 发明专利

DE2407275A1 未知
公开(公告)号：DE2407275A1
公开(公告)日：1974-08-29
申请号：DE2407275
申请日：1974-02-15
申请人： HITACHI LTD
发明人： TAKENOSHITA MITSUAKI , ICHIRYU KEN , NAKAMURA ICHIRO , MURAKAMI YUKIO , YUMINO HIROSHI
IPC分类号： B66B1/36 , B66B1/04 , B66B1/26 , B66B1/50 , F15B11/04 , B66B1/40

4. 发明专利

DE1945891A1 未知
公开(公告)号：DE1945891A1
公开(公告)日：1970-05-21
申请号：DE1945891
申请日：1969-09-10
申请人： HITACHI LTD
发明人： ICHIRYU KEN , HUJISAWA HUMIO , TAKENOSHITA MITSUAKI , YUMINO HIROSHI
IPC分类号： B66B1/04 , F15B21/04 , F16K47/02

5. 发明授权

US3892292A Hydraulic elevators 失效
标题翻译：液压电梯
公开(公告)号：US3892292A
公开(公告)日：1975-07-01
申请号：US28830572
申请日：1972-09-12
申请人： HITACHI LTD
发明人： TAKENOSHITA MITSUAKI , FUJISAWA FUMIO , NAKAMURA ICHIRO
IPC分类号： B66B1/36 , B66B1/04 , B66B1/26 , B66B11/04
CPC分类号： B66B1/24 , B66B1/405
摘要： In a hydraulic elevator of the type comprising a cylinder, a plunger vertically movably received in said cylinder and a cage carried on said plunger, said plunger being moved up or down by pressurized oil supplied into or discharged from said cylinder, means for detecting an upward or downward displacement of the cage occurring incident to unloading or loading of a load when the cage is in its stopping position is provided, so that the pressurized oil may be supplied into the cylinder upon occurrence of downward displacement of the cage and discharged from said cylinder upon occurrence of upward displacement of the cage, whereby the cage is readily brought to a level flush with the floor level.
摘要翻译：在一种液压升降机中，该液压升降机包括一个气缸，一个可垂直移动地容纳在所述气缸中的柱塞和一个承载在所述柱塞上的保持架，所述柱塞通过供应到所述气缸中或从所述气缸排出的加压油向上或向下移动，或者当保持架处于其停止位置时发生在卸载或装载负载时发生的轿厢的向下位移，使得当保持架向下移动并且从所述气缸排出时，加压油可以被供给到气缸中在发生笼的向上移位时，由此保持架容易地达到与地面水平面齐平的水平。

6. 发明授权

US3672398A Accumulator for absorbing a pulsation of pump pressure 失效
标题翻译：用于吸收泵压力的累加器
公开(公告)号：US3672398A
公开(公告)日：1972-06-27
申请号：US3672398D
申请日：1970-07-15
申请人： HITACHI LTD
发明人： ICHIRYU KEN , TAKENOSHITA MITSUAKI
IPC分类号： F16L55/04 , F04B11/00 , F15B1/08 , F16L55/052
CPC分类号： F04B11/0016 , F16L55/052 , Y10T137/86043
摘要： An accumulator to be provided in a conduit leading from a pump for absorbing a pulsation of pump pressure, which is so constructed that the ratio of the diameter of the accumulator neck da to the diameter of the conduit dp is not smaller than 0.5, i.e. da/dp > OR = 0.5 and the ratio of the length of the neck dL to the diameter of the conduit dp is not larger than 0.5, i.e. dL/dp

7. 发明授权

US3606243A Device for preventing noise in an oil-hydraulic elevator 失效
标题翻译：用于在油压电梯中预防噪音的装置
公开(公告)号：US3606243A
公开(公告)日：1971-09-20
申请号：US3606243D
申请日：1969-09-12
申请人： HITACHI LTD
发明人： ICHIRYU KEN , HUJISAWA HUMIO , TAKENOSHITA MITSUAKI , YUMINO HIROSHI
IPC分类号： B66B1/04 , F15B21/04 , F16K47/02
CPC分类号： B66B1/24 , B66B1/405 , F15B21/008 , Y10T137/86751
摘要： A DEVICE FOR PREVENTING NOISE IN AN OIL-HYDRAULIC ELEVATOR HAVING AN OIL-HYDRAULIC CIRCUIT INCLUDING A ROTARY OIL FLOW CONTROL VALVE COMPRISING A ROTARY SPOOL IN THE SHAPE OF A CYLINDER ROTATABLY RECEIVED IN A SLEEVE, SAID SPOOL AND SLEEVE EACH HAVING A PAIR OF OPPOSITELY ARRANGED OPENINGS ADAPTED TO DEFINE A PAIR OF OPPOSITELY ARRANGED VALVE PORTS WHEN SAID SPOOL IS POSITIONED AT A PROPER ANGULAR POSITION WITH RESPECT TO SAID SLEEVE, SAID VALVE PORTS ALLOWING TWO OIL JETS OPPOSING TO EACH OTHER, THE METHOD BEING CHARACTERIZED BY PREVENTING CAVITATION AT AN OUTLET REGION OF SAID VALVE PORTS DUE TO COLLISION OF SAID TWO JETS BY KEEPING THE OIL PRESSURE AT SAID REGION IN A RANGE OF 0.5-5 KG./ CM2. SUCH AN OIL PRESSURE IN SAID REGION IS KEPT BY PROVIDING A BULLET-SHAPED GUIDE MEMBER OR A BAFFLE PLATE AT SAID REGION OR THROTTLING AND EXHAUST PASSAGE IN THE DOWN STREAM OF SAID VALVE PORTS.

8. 发明专利

DE3048814A1 未知
公开(公告)号：DE3048814A1
公开(公告)日：1981-09-24
申请号：DE3048814
申请日：1980-12-23
申请人： HITACHI LTD
发明人： NAKAMURA ICHIRO , TAKENOSHITA MITSUAKI , ICHIRYU KEN , AKASAKA YOSHIMICHI , WATANABE HARUO
IPC分类号： H01H33/34 , F15B15/17
摘要： A hydraulic operating apparatus including an actuating cylinder having a piston arranged therein and moved by a fluid under high pressure further includes a control valve having only one metallic seal whether the piston is at its upper or lower positions. The control valve is operative to apply the fluid under high pressure to a pressure receiving surface of the piston on the opposite side of a piston rod to move the piston in a direction in which the piston rod extends from the piston and to discharge the fluid existent on the opposite side of the piston rod from the actuating cylinder to move the piston in a direction opposite the direction in which the piston rod extends from the piston. The hydraulic operating apparatus further includes a seal for dividing the pressure receiving surface of the piston on the opposite side of the piston rod into first and second pressure receiving surface sections, the first pressure receiving surface section having an effective pressure receiving area smaller than that of a pressure receiving surface of the piston on the side of the piston rod.

9. 发明专利

DE2312959A1 未知
公开(公告)号：DE2312959A1
公开(公告)日：1973-10-11
申请号：DE2312959
申请日：1973-03-15
申请人： HITACHI LTD
发明人： NAKAMURA ICHIRO , FUJISAWA FUMIO , TAKENOSHITA MITSUAKI , YUMINO HIROSHI
IPC分类号： B66B1/26 , B66B1/04 , F15B11/04

10. 发明专利

DE2245485A1 未知
公开(公告)号：DE2245485A1
公开(公告)日：1973-04-05
申请号：DE2245485
申请日：1972-09-15
申请人： HITACHI LTD
发明人： FUJISAWA FUMIO , TAKENOSHITA MITSUAKI , NAKAMURA ICHIRO , YUMINO HIROSHI
IPC分类号： B66B1/26 , B66B1/04 , B66B9/04 , F15B1/027 , B66B1/24
摘要： A hydraulic lift having an accumulator and an associated flow restricting valve disposed in a fluid conduit supplying a fluid under pressure for lifting a cage. In the hydraulic lift, the flow restriction of the flow restricting valve is varied in response to variations in the load carried by the cage so as to prevent transient oscillations tending to occur during starting, deceleration and stoppage of the cage.

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