Technology development history

1978 1. A new method for manufacturing long-life PTFE Pump Diaphragms.
2. A new Injection molded PPG 3/8” Double Diaphragm Pump range was released for sale.
1980 A new method for PFA Injection molding.
1983 1. Commenced In-house Injection molding of Plastic pump casings.
2. Commenced Injection molding of PFA Plastic components.
1986 1. A new full range of ¼” Double Diaphragm Pumps was developed and released for sale.
2. A 2D-CAD station was installed.
1987 1. A new High-Temperature Double Diaphragm pump was developed. (Japanese patent jointly owned with Fujitsu). *1 Patent Number #2518842
2. An Electrically Controlled Diaphragm Pump and Controller were designed and released for sale.
3. A new range of Injection-Molded plastic ¾” & 1” Double Diaphragm Pumps was developed by the company. Utilizing a new technique of thin ribbed stress dispersion for increased structural integrity.
1988 1. A new full range of ½” Double Diaphragm Pumps was developed and released for sale.
2. A new High-range 2D-CAD workstation was installed.
1992 A High-range 3D-CAD/CAE workstation was introduced.
1993 1. A new Long-life C-Spool Valve for 1 ½” 2” and 3” Double Diaphragm Pumps. Utilizing a special sealing structure and enabling fully lubrication free operation.
2. Patent applied for and obtained*1 Patent Number #3150012
1994 A new range of 1½” 2” and 3” Double Diaphragm Pumps in stainless steel, polypropylene, and aluminium was developed and released for sale.
1995 1. A new method of manufacturing Metal free PTFE Diaphragms was developed. 2. Patent applied for and obtained*1 Patent Number #2726014
1997 1. An Electric Pump Controller with an emergency stop function was designed and manufactured.
2. An Electric Diaphragm Pump, Diaphragm Inversion prevention mechanism was developed.
3. Patent applied for and obtained*1 Patent Number #3083275
1999 A Low-Speed Double Diaphragm Pump was developed for the prevention of fluid deterioration.
2000 A Special Diaphragm Pump, Automatic Self-Start Recovery Valve was designed to improve pump switching reliability. (Pressure-Detecting Type)
2001 1. A Special Diaphragm pump, Automatic Self-Start Recovery Valve for the use in the semiconductor industry was designed. (Differential-Pressure Type)
2. Patent applied for and obtained *1Patent Number #3416656
2001 A new enhanced Pump sealing mechanism for the prevention of leakage due to temperature fluctuations
2002 1. An additional 3D-CAD/CAE workstation was installed.
2. A new plastic (100% metal-free) C-Spool type Air Valve was developed.
3. A new pump chamber sealing mechanism to reduce the chance of liquid leakage.
2003 A new method for the improvement of assembly and accuracy of Air valves was designed.
2009 A new type of air switching valve was designed.
2012 1. A new range of high-performance ½” Diaphragm Pumps available in Pure PP, PVDF, aluminium, & stainless steel.
2. Patents applied for and obtained *1
Patent Number #1493139,#1494339,#1494140
2013 1. A new range of high-performance 1” Diaphragm Pumps available in aluminium cast iron & stainless steel.
2. Patents applied for and obtained*1Patent Number #1493116,#1493474
2014 1. A new range of PTFE Diaphragm pumps was designed and released for sale.
2. A new mechanical Air Spool with increased switching reliability and lower air consumption.
3. New Looped C® Spool Air Valve Developed and introduced for sale
Patent Pending*1
4. A new range of 2” Diaphragm Pumps available in all materials released for sale.

*1 YTS Co., Ltd. Patent History

  • 12 Patents (Now Expired)
  • 6 Design Patents (Current)
  • 4 Patents Pending
  • Countries where patents were applied for; Japan, China, Korea, USA, Italy, Denmark, France, Germany, Netherlands, Sweden, and England.