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    • 1. 发明授权
    • Arrangement for operating an electronically controlled sewing machine in
a diagnostic mode
    • 在诊断模式下操作电子缝纫机的布置
    • US4393796A
    • 1983-07-19
    • US393148
    • 1982-06-28
    • William H. DunnLeonard I. HoreyMarvin Kurland
    • William H. DunnLeonard I. HoreyMarvin Kurland
    • D05B3/02D05B69/36G05B19/042G05B23/02D05B79/00
    • G05B19/0428D05B69/36G05B2219/24069
    • An electronically controlled sewing machine includes an arrangement for operating the machine in a diagnostic mode, wherein several tests for checking the functioning of the sewing machine can be performed. In a first test, all of the light emitting diodes on the panel of the sewing machine are sequentially energized. This verifies proper operation of the display panel. In a second test, a particular light emitting diode responds to the armshaft sensor such that it is dark when the needle is up and is illuminated when the needle is down. The motor speed function is monitored by a test which lights particular light emitting diodes in 100 stitches per minute increments of motor speed. Proper overall operation of the sewing machine, including the actuators, is monitored by running several test patterns. To isolate a possible fault in the sewing machine foot controller, the sewing machine may be run at a preset speed without depressing the foot controller.
    • 电子控制缝纫机包括用于以诊断模式操作机器的装置,其中可以执行用于检查缝纫机功能的若干测试。 在第一测试中,缝纫机面板上的所有发光二极管依次通电。 这将验证显示面板的正确操作。 在第二次测试中,特定的发光二极管响应于臂轴传感器,使得当针被向上并且当针被向下时被照亮时它是暗的。 电机速度功能通过一个测试来监控,该测试以100针/分钟的电机速度增量点亮特定的发光二极管。 包括执行器在内的缝纫机的整体操作可以通过运行多种测试模式进行监控。 为了隔离缝纫机脚踏控制器可能发生的故障,缝纫机可以以预设速度运行,而不需要按压脚踏控制器。
    • 6. 发明授权
    • Ice thickness control system and sensor probe for ice-making machines
    • US06339930B2
    • 2002-01-22
    • US09888467
    • 2001-06-25
    • Leonard I. Horey
    • Leonard I. Horey
    • F25C112
    • F25C1/12F25D21/02
    • The present invention provides an improved system and method for sensing of ice, particularly applicable in the control of ice thickness in automatic ice-making machines. The ice-making machine may be of the conventional type using a cold plate with water flowing over it. A thermistor bead temperature sensor is encapsulated in a metal housing, which is in turn mounted on a carrier. The position of the carrier is adjustable relative to the cold plate. The control system has several variable delays or time durations which optimize system performance: 1. Minimum harvest time delay, relative to the start of the ice-making cycle; 2. Threshold persistence time delay, requires that the signal sensor persists above the harvest threshold value for a certain amount of time (referenced to when the threshold is first exceeded), before harvesting may begin; 3. Harvesting delay is an optional delay provided give the option of making sure the ice is sufficiently “cured.” These delay times may be implemented in hardware (by being built into the control logic), software, or by a combination of both hardware and software. The improved sensor and control concepts offer their own benefits and may be used separately or together.