초록 ▼

A lever latch, for releasably latching a door to a corresponding door frame, includes a housing having a handle pivotally mounted therein and rotatable between opened and closed positions. In the handle closed position, a bolt mounted to the handle engages the door frame, and in the handle opened po

A lever latch, for releasably latching a door to a corresponding door frame, includes a housing having a handle pivotally mounted therein and rotatable between opened and closed positions. In the handle closed position, a bolt mounted to the handle engages the door frame, and in the handle opened position, the bolt is disengaged from the door frame. The housing includes a trigger pivotally mounted therein, and pivotable between a first position to retain the handle in the closed position and a second position to release the handle to the opened position. A pawl is rotatably mounted to a lock cylinder on the housing and rotatable between locked and unlocked positions to allow the trigger to pivot to the second position and to prevent the trigger from being pivoted to the second position, respectively.

대표청구항 ▼

A lever latch, for releasably latching a door to a corresponding door frame, includes a housing having a handle pivotally mounted therein and rotatable between opened and closed positions. In the handle closed position, a bolt mounted to the handle engages the door frame, and in the handle opened po

A lever latch, for releasably latching a door to a corresponding door frame, includes a housing having a handle pivotally mounted therein and rotatable between opened and closed positions. In the handle closed position, a bolt mounted to the handle engages the door frame, and in the handle opened position, the bolt is disengaged from the door frame. The housing includes a trigger pivotally mounted therein, and pivotable between a first position to retain the handle in the closed position and a second position to release the handle to the opened position. A pawl is rotatably mounted to a lock cylinder on the housing and rotatable between locked and unlocked positions to allow the trigger to pivot to the second position and to prevent the trigger from being pivoted to the second position, respectively. controller memory; and comparing the elapsed time to a predetermined reference time. 11. A method in accordance with claim 10 wherein said step of executing at least one defrost cycle comprises the steps of: executing a first defrost cycle when the elapsed time is less than the reference time; and executing a second defrost cycle when the elapsed time is greater than the reference time, said second defrost cycle different than said first defrost cycle. 12. A method in accordance with claim 1, the refrigerator including at least one refrigeration compartment, said step of regulating the defrost cycle comprising the steps of: determining a temperature of the refrigeration compartment, and executing a pre-chill cycle only when the determined temperature is above a predetermined temperature. 13. A method in accordance with claim 1 wherein said step of regulating the defrost cycle comprises the steps of: monitoring an evaporator temperature during defrost; and terminating the defrost when the evaporator reaches a predetermined temperature. 14. A method in accordance with claim 1, the refrigerator including a refrigeration compartment, the controller including a memory, the memory containing a time till defrost value and a refrigeration compartment temperature setpoint, said step of regulating the defrost comprising the steps of: reading the time till defrost and the refrigeration compartment temperature setting upon powerup; determining the temperature of the refrigeration compartment; and resuming the time till defrost if the determined temperature is substantially at the refrigeration compartment temperature setting. 15. A method in accordance with claim 1, the refrigerator including a refrigeration compartment, the controller including a memory, the memory containing a refrigeration compartment temperature setpoint, said step of regulating the defrost cycle comprising the steps of: determining the temperature of the refrigeration after the defrost is completed; comparing the determined temperature to the compartment temperature setpoint; and executing a cooling cycle only when the determined temperature exceeds the compartment temperature setpoint. 16. A method in accordance with claim 1 wherein said step of determining whether at least a first defrost cycle is required comprises the step of determining a need for a defrost cycle using fuzzy inputs. 17. A defrost control system for a frost-free refrigerator including a compressor, a defrost heater, at least one refrigeration compartment and a temperature sensor thermally coupled to the refrigeration compartment, said control system comprising: a controller operatively coupled to the compressor, the defrost heater, and the temperature sensor, said controller configured to: monitor a compressor load; determine whether at least a first defrost cycle is required based on the compressor load; execute at least one defrost cycle when required; and determine, for a subsequent defrost cycle, whether a normal defrost cycle corresponding to a first predetermined defrost interval or whether an abnormal defrost cycle corresponding to a second predetermined defrost interval is required for the subsequent defrost cycle. 18. A defrost control system accordance with claim 17, the refrigerator including an evaporator, said controller further configured to monitor an evaporator load. 19. A defrost control system in accordance with claim 18, said controller further configured to compare the evaporator load and the compressor load. 20. A defrost control system in accordance with claim 19 said controller further configured to monitor a compressor load by sensing a compressor current. 21. A defrost control system in accordance with claim 20, said controller further configured to monitor a temperature differential across the evaporator. 22. A defrost control system in accordance with claim 17, said controller further configured to monitor a compressor run ti