Shinken was founded in 1975 by several engineers with many years of experience in
and a rich knowledge of vibration technology in center, and since then has been in
action as A Specialist in VIBRATION from the development and manufacture of the
latest Vibration Test Systems (VTSs), alleviation of evil influences caused by vibration,
to good use of vibration etc. Our achievements in our history are the first home-
manufactured Digital Vibration Controller, the globally largest Electro-dynamic 3-axis
VTS, a 4-wheel・3-axis Automobile Road-Surface Excitation Simulator used for a
variety of studies on vehicles, a large-stroke (max. 400mmp-p) 3-axis VTS for seismic
studies and so on.
Nowadays, with overcrowding of the present society and rapid developments in various
technologies, the vibration technology is regarded as more important than ever, thus
increasing our responsibilities and giving us very good opportunities as A Specialist
in VIBRATION, a few in the wide world; easing of vibration & noise pollution, betterment
in safety & ride-comfort for aircraft & vehicles, quality improvement for electric and
electronic apparatus, strengthening of the degree in anti-vibration for buildings and
aerospace devices etc. Shinken copes with these needs and keeps on challenging to
any requirements related to VIBRATION with enthusiasm and solid belief, backed by
the latest technology and many years of experience. 　　May 2002, Sadayuki Yoneda

Company Name 　： Shinken Co., Ltd.
Incorporated 　　　： January, 1975
Paid-up Capital　： Japanese Yen 21,000,000
President　　　　　： Sadayuki Y oneda
Directors　　　　　： Eiichi Tomioka, Takeshi Manba
Auditor　　　　　　： Osamu Akiyama
No. of Employees ： 38 (as of April 2002)
Head Office　　　　： Tanaka Bldg., 6-4 Kojimachi, Chiyoda-ku, Tokyo, 102-0083
　　　　　　　　　　　　　Tel: 03(3261)3211 Fax: 03(3264)2930
Annual Turnover　： About \1,050,000,000 (the past 3 years' average)
Line of Products　： ☆ Electrodynamic Single-axis Vibration Test Systems
　　　　　　　　　　　　 ☆ Electrodynamic Multi-axis Vibration Test Systems
　　　　　　　　　　　　 ☆ Electrodynamic Shock Test Systems
　　　　　　　　　　　　 ☆Vibration Controllers
　　　　　　　　　　　　 ☆ Vibration Meters

1975 Jan.　Incorporated by engineers with over 10-year experience in vibration
　　　 Oct.　Developed and started marketing Automatic Vibration Controllers
　　　 Nov.　Started marketing High-Frequency Vibration Test Systems (VTSs)
1976 Jan.　Started marketing 80ch Automatic Random Control Systems
　　　 Nov.　Developed and started marketing Digital Vibration Controllers
1977 Dec.　Developed and started marketing Biaxial VTSs
1982 May　Developed & started marketing Globally-First Electrodynamic Triaxial VTSs
1983 Oct.　Developed and started marketing affordable Digital Sine Controllers
1984 Jan.　Developed and started marketing PC-based Random Control Systems
1986 May　Developed and started marketing High-Frequency Multi-axial VTSs
1988 June U.S. Patent No.4,748,851 granted for Multi-axial Shakers
1989 Oct.　Developed and started marketing PWM (Switching) Power Amplifiers
　　　　　　 U.K. Patent No.GB2184848B granted for Multi-axial Shakers
1990 Feb.　Developed and started marketing 600mmp-p Horizontal Shock
　　　　　　 Generators with the air-bearing guide
1992 Nov.　Japanese Patent No.1715897 granted for HT & LT Types
　　　　　　 Multi-axial Shakers (for relatively high-frequency use
1993 Sept. Installed a 4-wheel・3-axis VTS for automotive road-surface
　　　　　　 excitation simulation at a leading car manufacturer in Japan
　　　Nov.　Japanese Patent No.1798847 granted for LB Type Multi-axial Shakers
　　　　　　 Japanese Patent No.1800853 granted for HB Type Multi-axial Shakers
1995 June Developed a Linear-motor Actuator for active-damping for a high
　　　　　　 building in collaboration with Mitsubishi Heavy Industries, Ltd.
1997 Feb.　Installed a large-stroke 3-axis VTS at the Meteorological Agency
1998 May　Developed and started marketing Windows 95 (now 2000 available) OS
　　　　　　 D-55 Series Digital Vibration Controllers
2000 Jan.　Installed a 2KHz-response Biaxial VTS with an environmental Chamber
　　　　　　 Japanese Patent No.327204 granted for Ecology & Cleanness-oriented
　　　　　　 Vibration Generators prominent with Air-bearing & Seal-less Air Suspension
　　　Dec.　Obtained ISO9001
2001 Jan.　Obtained the Japanese Patent No.3152411 covering all the multi-axis
　　　　　　 excitation with the cross-coupling hydro-static bearing structure