公开(公告)号：US06607141B2

公开(公告)日：2003-08-19

申请号：US09912369

申请日：2001-07-26

申请人： Somchai Paarporn

发明人： Somchai Paarporn

IPC分类号： F24D300

CPC分类号： F04D15/0066 ,  F24D19/1012 ,  G05D23/1919 ,  Y02B30/745

摘要： Decentralized centrifugal pumps (62) with variable speed drivers located at cooling or heating coils (74) are utilized to circulate and regulate liquid through the coils, main supply line (42), and main return line (48). Pump speed is controlled to satisfy temperature or pressure settings of a control agent served by the coil. Central distribution pumps, modulating control valves, and balancing valves are no longer required to circulate and regulate the flow. Without the balancing valves and control valves, there will be less pressure drops and waterpower losses in the piping system. Thus, the decentralized pumping system will require less pump power and energy consumption than the central pumping system.

公开(公告)号：US10150013B2

公开(公告)日：2018-12-11

申请号：US15131397

申请日：2016-04-18

申请人： Somchai Paarporn

发明人： Somchai Paarporn

IPC分类号： A63B43/04 ,  A63B43/00 ,  A63H33/26 ,  A63H29/00 ,  A63H33/00 ,  A63H15/00

摘要： The Rollback Ball or Ballmerang is a ball toy consisting of a ball shell and a mechanical tracking device tracking the ball shell by using friction force or magnetic force converting the moving ball kinetic energy to potential energy, and then releasing the potential energy rolling the ball back at the same straight line path to the same launching destination when rolling the ball in any direction on a flat floor.

公开(公告)号：US20170296880A1

公开(公告)日：2017-10-19

申请号：US15131397

申请日：2016-04-18

申请人： Somchai Paarporn

发明人： Somchai Paarporn

IPC分类号： A63B43/00 ,  A63H33/26 ,  A63H29/00

CPC分类号： A63B43/00 ,  A63H15/00 ,  A63H29/00 ,  A63H33/005 ,  A63H33/26

摘要： The Rollback Ball or Ballmerang is a ball toy consisting of a ball shell and a mechanical tracking device tracking the ball shell by using friction force or magnetic force converting the moving ball kinetic energy to potential energy, and then releasing the potential energy rolling the ball back at the same straight line path to the same launching destination when rolling the ball in any direction on a flat floor.