Patents

Patents:

• Parallel Back Pressure Hydraulic Control Valve, (PBPHCV). (8 October 2000))
• Anti-earthquake safety bed with collapsing ceiling, safety shade and brake. (8 April 2004)
• Lifter for moving heavy loads upstairs with equilibrator spring and damper.(20 December 2005)
• Quick disassembly and reassembly Anti-earthquake safety bed with an enforcing mechanism for horizontal collapsing of the ceiling, automatic safety shade drop mechanism and ceiling stop locker.(20 December 2005)
• Mechanical leakage measuring and recording device for hydraulic actuators on  dirty areas (15 April 2007)
• Foldable spider Anti-earthquake safety bed (2009)
• Foldable earthquake bed safe against debris and fall (2011)