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71. 发明专利

IT9047546A1 ALBERO A CAMME E METODO PER PRODURLO. 未知
公开(公告)号：IT9047546A1
公开(公告)日：1991-07-19
申请号：IT4754690
申请日：1990-01-19
申请人： NIPPON PISTON RING CO LTD
发明人： SUZUKI YASUO , TAKEGUCHI SHUNSUKE
IPC分类号： B22F7/06 , C22C33/02 , F01L1/047 , F02B20060101 , F16H53/02

72. 发明专利

DE3619916C2 未知
公开(公告)号：DE3619916C2
公开(公告)日：1991-01-24
申请号：DE3619916
申请日：1986-06-13
申请人： NIPPON PISTON RING CO., LTD., TOKIO/TOKYO, JP
发明人： KAWAGUCHI, TAKASHI, AGEO, SAITAMA, JP , FUJITA, YOSHIAKI, OMIYA, SAITAMA, JP , KAWAI, SATOSHI, TOCHIGI, JP
IPC分类号： G01N29/28 , G01N29/04 , G01N29/265
摘要： A method and device for the examination of a joint between a hollow steel shaft and a piece joined to the steel hollow shaft of a composite camshaft using ultrasonic examination. In the ultrasonic examination, the composite camshaft is put into a liquid and a probe of an ultrasonic search unit is inserted inside of the hollow steel shaft. The ultrasonic examination of the joint is performed from inside of the hollow steel shaft. According to the ultrasonic examination, any kind of joint of the composite camshaft is possible, because a distance from an inside surface of the hollow steel shaft to the joint is constant. In addition, since the probe does not contact the inside surface of the hollow steel shaft, the probe is not consumed due to abrasion.

73. 发明专利

DE3723430C2 未知
公开(公告)号：DE3723430C2
公开(公告)日：1990-08-09
申请号：DE3723430
申请日：1987-07-15
申请人： NIPPON PISTON RING CO., LTD., TOKIO/TOKYO, JP
发明人： KOOROKI, TAKEO, TOKIO/TOKYO, JP
IPC分类号： F02F5/00 , F16J9/06
摘要： A spacer expander adapted for use in an oil ring assembly of an internal combustion engine comprising a split annular shaped spring body containing a plurality of lugs extending axially from the body to bear on a single rail or double side rails, the body having a sufficiently thick cross-section to exert a radial expansive force on the side rail and cause it to follow the inner surface of the engine cylinder even if the cylinder is distorted at high speed running. The lug is thinner in thickness at least at its root portion than the body and is elastically bendable without affecting the body. Upon inclination of the piston to the cylinder, the side rail is inwardly biased by the cylinder to push a part of the lugs. However, the lugs can elastically bend independently from the body and from the other part of the lugs with the result that the outer radial face of the side rail is always maintained in operative contact with the inner surface of the cylinder.

74. 发明专利

DE4001392A1 未知
公开(公告)号：DE4001392A1
公开(公告)日：1990-08-02
申请号：DE4001392
申请日：1990-01-18
申请人： NIPPON PISTON RING CO LTD
发明人： SUZUKI YASUO , TAKEGUCHI SHUNSUKE
IPC分类号： B22F7/06 , C22C33/02 , F01L1/047 , F16H53/02

75. 发明专利

GB2197443B TOOL FOR SUPPORTING A COMPOSITE CAMSHAFT DURING SINTERING 未知
公开(公告)号：GB2197443B
公开(公告)日：1990-03-07
申请号：GB8619363
申请日：1986-08-08
申请人： NIPPON PISTON RING CO LTD
发明人： URANO SHIGERU , TAKEGUCHI SHUNSUKE
IPC分类号： F27D3/12 , B22F3/10 , B22F7/08 , F01L1/047 , F02F7/00 , F16H53/02 , F27D5/00
摘要： A tool for supporting a composite camshaft having a steel shaft and a sintered piece to be joined to the steel shaft through sintering in a sintering furnace. The tool comprises a graphite frame having at least two sides, in an upper portion of which a groove means is formed. A ceramic layer is provided on a surface of the groove means. When sintering is performed using such a tool, the tool will not deform even if the tool is exposed to an environment of high temperature, such as the temperature higher than 1,100 DEG C., and therefore, bending of the composite camshaft will not occur during sintering. In addition, the ceramic layer prevents diffusion of carbon from the graphite frame to the steel shaft of the composite camshaft, and therefore, a hardening of the steel shaft due to carbonizing will not occur. As a result, reliability of the joint between the sintered piece and the steel shaft is increased.

76. 发明专利

DE3501823C2 未知
公开(公告)号：DE3501823C2
公开(公告)日：1989-01-05
申请号：DE3501823
申请日：1985-01-21
申请人： NIPPON PISTON RING CO., LTD., TOKIO/TOKYO, JP
发明人： KOOROKI, TAKEO, TOKIO/TOKYO, JP
IPC分类号： F02F5/00 , C21D9/40 , C23C8/00 , F02B1/04 , F16J9/26 , C22C38/18

77. 发明专利

GB2169032B MANUFACTURE OF ROTORS FOR ROTARY FLUID PUMPS 未知
公开(公告)号：GB2169032B
公开(公告)日：1988-03-09
申请号：GB8530113
申请日：1985-12-06
申请人： NIPPON PISTON RING CO LTD
发明人： SAKAMAKI HIROSHI , SUGISHITA SUSUMU , HORIKOSHI YUKIO , OKAMURA HIROSHI , SHIMIZU KENJI
IPC分类号： F04C18/344 , F01C21/08 , F04C2/344
摘要： A method of manufacturing a rotor for rotary fluid pumps comprising the steps of assembling a hollow cylindrical body and both side plates to a hollow rotor body, providing the hollow rotor body with a plurality of sockets each receiving a separately fabricated U-shaped vane-groove forming member, and inserting the U-shaped vane-groove forming members into the respective sockets to fix the same to the rotor body by brazing. The U-shaped vane-groove forming member is made from a suitable material as a vane groove itself and sufficiently finished independently from the rotor body.

78. 发明专利

CA1233801A ROTARY COMPRESSOR 未知
公开(公告)号：CA1233801A
公开(公告)日：1988-03-08
申请号：CA443117
申请日：1983-12-12
申请人： NIPPON PISTON RING CO LTD
发明人： SAKAMAKI HIROSHI , SUGISHITA SUSUMU , HORIKOSHI YUKIO , YANAGIHASHI KIKUJI
IPC分类号： F04C18/344 , F04C18/348
摘要： A novel rotary compressor is provided herein. It includes a center housing and front and rear side housings, a rotary sleeve rotatably mounted in the center housing and in the front and rear side housings, a rotor eccentrically disposed in the rotary sleeve, the rotor containing a plurality of vanes which are radially and movably fitted therein, and a plurality of air-guide grooves formed in the opposite side surfaces of the rotary sleeve and peripherally separated from each other, the air-guide grooves extending radially from the inner periphery of the rotary sleeve to the outer periphery of the rotary sleeve. As the rotary sleeve rotates, the air-guide grooves guide air to flow from the compression working space in the rotary sleeve to the air-bearing room between the outer periphery of the rotary sleeve and the inner periphery of the center housing and from the air-bearing room to the suction working space in the rotary sleeve so that an air film is formed in each of the both side clearances between the both side surfaces of the rotary sleeve and the inner surfaces of the both side housings. The advantages offered by this construction are mainly that opposite side surfaces of the rotary sleeve and the inner surfaces of the both side housings are substantially free from wear.

79. 发明专利

GB2164420B CAMSHAFT 未知
公开(公告)号：GB2164420B
公开(公告)日：1987-12-23
申请号：GB8522331
申请日：1985-09-09
申请人： NIPPON PISTON RING CO LTD
发明人： URANO SHIGERU
IPC分类号： F01L1/04 , B21D26/02 , B21D26/033 , B21D26/051 , F16H53/02
摘要： A fabricated camshaft having individual lobes mounted on tubular collars that are in turn mounted on an internal tubular member that is expanded between the collars to form bearing journals for the camshaft.

80. 发明专利

DE3466723D1 ROTARY COMPRESSOR 未知
公开(公告)号：DE3466723D1
公开(公告)日：1987-11-12
申请号：DE3466723
申请日：1984-06-06
申请人： NIPPON PISTON RING CO LTD
发明人： SAKAMAKI HIROSHI , SUGISHITA SUSUMU , HORIKOSHI YUKIO , YANAGIHASHI KIKUJY
IPC分类号： F04C18/344 , F04C18/348 , F04C29/00
摘要： Apparatus in a vane type rotary compressor for floatingly supporting a rotary sleeve (30) which is mounted in a center housing for rotation with a plurality of vanes (16) movable in a rotor (10), the apparatus comprising an air-bearing room (40) defined between the inner periphery of the center housing and the outer periphery of the rotary sleeve and supplied with the maximum-pressure or discharge-pressure air through an air-supply passage (45) extending from the discharge chamber (41) or compression working space (43) under the maximum pressure. The air-supply passage is formed with an accumulator (60) for reducing the pulsation and/or temperature of the supplied air. The accumulator (60) is composed of either or both of a relatively large hollow (61) in the thickened wall of the center housing and a plurality of fine bores (62) and alternative grooves (63) forming a S-shaped hole in the suction side wall.

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