84results about How to "Adult low" patented technology

The invention discloses a suspended piston engine which comprises a cylinder and a piston, wherein the piston is entirely or partially arranged in the cylinder, and the piston and the cylinder are arranged in a noncontact suspension or quasi suspension way within an entire travel range or a partial travel range between an upper dead point on the cylinder corresponding to the upper dead point of the piston and a lower dead point on the cylinder corresponding to the lower dead point of the piston. The invention can realize the sealing and no abrasion of an engine piston and a cylinder sleeve inthe state of high temperature, thereby improving the efficiency of the engine.

The invention relates to a borehole stress meter which can measure stress in a plurality of points comprising a hydraulic oil cylinder and a pressure sensor. The hydraulic oil cylinder is arranged vertically and one side of the lower end of the hydraulic oil cylinder is communicated with a pressure signal sensitive end at one end of the pressure sensor and the other end of the pressure sensor is connected with a signal output pin; the other side of the lower end of the hydraulic oil cylinder is provided with a check valve supplying oil to the hydraulic oil cylinder and connected with an oil pipe. A plurality of borehole stress meters are arranged in preset positions in an installation guide track in sequence when installing and a general oil pipe is connected with all check valves of all borehole stress meters and can be sent into the borehole together with the installation guide track to ensure a sensitive piston keeping vertical to the level; the installation guide track is drawn back when reaching the preset positions; each pressure oil cylinder is greased with oil till the piston rises and well contacts with the top wall of the borehole and the borehole stress meter starts to work normally, realizing synchronous installation and test in a plurality of measuring points in one borehole.

The invention discloses an invasion tolerance application server based on J2EE middleware criterion. The server comprises an invasion tolerance expansion integrated frame, an invasion tolerance strategy logic assembly, a safety group communication manager, a safety group communication system and an application server basic platform. The invasion tolerance strategy logic assembly and the invasion tolerance expansion integrated frame are conducted in loose coupling and realize the transparent expansion of invasion tolerance function of the J2EE application server basic platform by a built-in interceptor of the J2EE application server. The invasion tolerance strategy logic assembly and the safety group communication manager are intercommunicated via an API interface. The safety group communication system works on a group communication layer of the J2EE application server basic platform and intercommunicated with the safety group communication manager and the J2EE application server basic platform respectively via the safety group communication manager. The invention realizes the effective integration of invasion tolerance and J2EE application service functions, and is superior in significant security and survivability as compared with other similar servers.