초록 ▼

An improved electronic lock requires a low power and consumes less electricity including an outer frame, an inner frame, a lock axle unit and a power unit. The outer frame is fastened to the outer side of a lock stile of a door. The outer frame has an outer handle, a keypad and a key way located on

An improved electronic lock requires a low power and consumes less electricity including an outer frame, an inner frame, a lock axle unit and a power unit. The outer frame is fastened to the outer side of a lock stile of a door. The outer frame has an outer handle, a keypad and a key way located on the exterior, and has the interior for housing the lock axle unit and the power unit to couple with the inner frame. The power unit includes a motor, a spring, a sleeve, a sliding plate and a retain plate. The power unit is coupled with a L-shaped lever to generate lever movements. Users may enter an electronic password to activate the motor to perform locking and unlocking function. The construction greatly reduces electric power: consumption of batteries, and lowers electric voltage, and increase the durability of the batteries.

대표청구항 ▼

An improved electronic lock requires a low power and consumes less electricity including an outer frame, an inner frame, a lock axle unit and a power unit. The outer frame is fastened to the outer side of a lock stile of a door. The outer frame has an outer handle, a keypad and a key way located on

An improved electronic lock requires a low power and consumes less electricity including an outer frame, an inner frame, a lock axle unit and a power unit. The outer frame is fastened to the outer side of a lock stile of a door. The outer frame has an outer handle, a keypad and a key way located on the exterior, and has the interior for housing the lock axle unit and the power unit to couple with the inner frame. The power unit includes a motor, a spring, a sleeve, a sliding plate and a retain plate. The power unit is coupled with a L-shaped lever to generate lever movements. Users may enter an electronic password to activate the motor to perform locking and unlocking function. The construction greatly reduces electric power: consumption of batteries, and lowers electric voltage, and increase the durability of the batteries. nd steam turbine; and (i) compressing the second refrigerant of the second refrigeration cycle in a fourth compressor driven by the second steam turbine, said first and third compressors being fluidly coupled to the first refrigeration cycle in parallel, said second and fourth compressors being fluidly coupled to the second refrigeration cycle in parallel. 12. The process according to claim 11, said first refrigerant comprising in major portion propane, propylene, and mixtures thereof. 13. The process according to claim 12, said second refrigerant comprising in major portion methane. 14. The process according to claim 11, said first refrigerant comprising in major portion a hydrocarbon selected from the group consisting of propane, propylene, and mixtures thereof, said second refrigerant comprising in major portion methane. 15. The process according to claim 14; and (j) compressing a third refrigerant of a third refrigeration cycle in a fifth compressor driven by the first electric motor; and (k) compressing the third refrigerant of the third refrigerant cycle in a sixth compressor driven by the second electric motor. 16. The process according to claim 15, said fifth and sixth compressors being fluidly coupled to the third refrigeration cycle in parallel. 17. The process according to claim 16, said first refrigerant comprising in major portion propane, said second refrigerant comprising in major portion methane, said third refrigerant comprising in major portion ethylene. 18. The process according to claim 11; and (1) vaporizing liquefied natural gas produced via steps (a)-(e). 19. An apparatus for liquefying natural gas by cooling the natural gas via a plurality of sequential refrigeration cycles employing different refrigerants, said apparatus comprising: a first refrigeration cycle including a first compressor for compressing a first refrigerant; a second refrigeration cycle including a second compressor for compressing a second refrigerant; a third refrigeration cycle including a third compressor for compressing a third refrigerant; a first electric motor for driving the first compressor; a second electric motor for driving the second compressor; and a third electric motor for driving the third compressor, said first refrigerant comprising in major portion a hydrocarbon selected from the group consisting of propane, propylene, and mixtures thereof, said second refrigerant comprising in major portion a hydrocarbon selected from the group consisting of ethane, ethylene, and mixtures thereof, said third refrigerant comprising in major portion methane, said second refrigeration cycle including a fourth compressor drivingly coupled to the first electric motor and operable to compress the second refrigerant, said first refrigeration cycle including a fifth compressor drivingly coupled to the second electric motor and operable to compress the first refrigerant, said first and fifth compressors being fluidly integrated in the first refrigeration cycle in parallel, said second and fourth compressors being fluidly integrated in the second refrigeration cycle in parallel. 20. The apparatus according to claim 19, said first refrigeration cycle being located upstream of the second refrigeration cycle, said second refrigeration cycle being located upstream of the third refrigeration cycle. 21. The apparatus according to claim 19, said third refrigeration cycle being an open methane cycle. 22. The apparatus according to claim 19, said first refrigerant comprising in major portion propane, said second refrigerant comprising in major portion ethylene, said third refrigerant comprising in major portion methane. 23. The apparatus according to claim 19, said first refrigerant comprising in major portion propane, said second refrigerant comprising in major portion ethylene. 24. An apparatus for liquefying natural gas by cooling the natural gas via a pluralit