Abstract: The invention discloses a apparatus and a method for rapid measurement of heat capacity of a thin film material. Specifically, the apparatus comprises a control device, a clock synchronizer, a flat peak laser device, a rapid thermometer and a heat capacity output device; the control device and the clock synchronizer are signally connected, and the clock synchronizer is signally connected to the flat peak laser device and the rapid thermometer; In the working state, the control device sends a start signal to the clock synchronizer, and the flat peak laser device and the fast thermometer coordinately cooperate; the flat peak laser device irradiates a laser with a spatially flat peak to the surface of the sample; At the same time, the rapid thermometer captures the surface temperature of the sample at a certain point in time during the heating process of the sample, and inputs the measured data into the heat capacity output device to obtain the desired heat capacity parameter.

Abstract: The invention discloses a method and a apparatus for rapid measurement of thermal conductivity of a thin film material. The apparatus comprises a control device, a clock synchronizer, a laser, a rapid thermometer and a thermal conductivity output device; the control device and the clock synchronizer are signally connected, and the clock synchronizer is simultaneously signally connected with the laser and the rapid thermometer; in the working state, the control device sends a start signal to the clock synchronizer, and the laser and the rapid thermometer coordinately cooperate, and the laser emits laser light to the surface of the sample; at the same time, the rapid thermometer captures the surface temperature of the sample at the same specified position at different time points during the heating of the sample, and inputs the measured data into the thermal conductivity output device to obtain the thermal conductivity parameter. The apparatus of the invention has simple structure.

Abstract: The invention discloses a apparatus and a method for rapid measurement of heat capacity of a thin film material. Specifically, the apparatus comprises a control device, a clock synchronizer, a flat peak laser device, a rapid thermometer and a heat capacity output device; the control device and the clock synchronizer are signally connected, and the clock synchronizer is signally connected to the flat peak laser device and the rapid thermometer; In the working state, the control device sends a start signal to the clock synchronizer, and the flat peak laser device and the fast thermometer coordinately cooperate; the flat peak laser device irradiates a laser with a spatially flat peak to the surface of the sample; At the same time, the rapid thermometer captures the surface temperature of the sample at a certain point in time during the heating process of the sample, and inputs the measured data into the heat capacity output device to obtain the desired heat capacity parameter.

Abstract: The invention discloses a method and a apparatus for rapid measurement of thermal conductivity of a thin film material. The apparatus comprises a control device, a clock synchronizer, a laser, a rapid thermometer and a thermal conductivity output device; the control device and the clock synchronizer are signally connected, and the clock synchronizer is simultaneously signally connected with the laser and the rapid thermometer; in the working state, the control device sends a start signal to the clock synchronizer, and the laser and the rapid thermometer coordinately cooperate, and the laser emits laser light to the surface of the sample; at the same time, the rapid thermometer captures the surface temperature of the sample at the same specified position at different time points during the heating of the sample, and inputs the measured data into the thermal conductivity output device to obtain the thermal conductivity parameter. The apparatus of the invention has simple structure.

Abstract: A multi-function utility knife has a housing, a blade seat forward slidably received in the housing, a blade fixed to the blade seat, a driving unit having an actuator protruding out from the housing and an actuator seat reciprocally slidable along the housing, a blade seat return spring linking the blade seat and the housing, a blade change means, and a function switch. The blade of the multi-function utility knife is also able to be either multi-levelly locked when extended or automatically retractable.

Abstract: A retractable telescoping utility knife having a handle having a first cover and a second cover detachably coupling together, a blade shell telescopically slidable contained in the handle and having a first shell and a second shell detachably coupling together, a blade seat slidably contained in the blade shell, a blade having installation notches and installed on the blade seat, an actuator having a neck formed on the blade seat, a blade shell control mechanism, and a blade change means.

Abstract: A high reliability scraper has a shell acting both as a container for a blade and as a handle. The shell has a rear end and a front end from which said blade extending. The shell has a first side cover and a second side cover detachably coupling together. The first side cover has a front upper jaw, a middle groove, an outside opening, and an inner protrusion formed on a rear portion of the middle groove. The second side cover has a front lower jaw, a middle slider slidably received in said middle groove, a top protrusion formed on the middle slider and extending out from the outside opening, a pair of resilient biasing poles, a slope between the lower jaw and the middle slider, and a hook form on a rear portion of the middle slider.

Abstract: A cutting device with an auto-retractable blade, having a housing containing an active blade extendable from a front aperture thereof and a spare blade box therein. An actuator is provided being fixed to an actuator seat contained in and slidable with respect to the housing. The actuator seat has a side protrusion having a front dent defined therein. A blade seat is slidably contained in the housing. The blade seat has an upper fulcrum, a side protrusion, a side blocker, a blade installation plate, a lower fulcrum, and a blade seat return spring. The side protrusion has a front slope and a back tip which is receivable in the front dent of the actuator seat.

Abstract: A cutting device with an auto-retractable blade, having a housing containing an active blade extendable from a front aperture thereof and a spare blade box therein. An actuator is provide being fixed to an actuator seat contained in and slidable with respect to the housing. The actuator seat has a side protrusion having a front dent defined therein. A blade seat is slidably contained in the housing. The blade seat has an upper fulcrum, a side protrusion, a side blocker, a blade installation plate, a lower fulcrum, and a blade seat return spring.

Abstract: A carpet knife having a housing, an active blade installed in the housing, and a blade clamping means having a clamping cover and a thumb screw. The housing has a thumb screw hole, a pin hole, at least one side guiding groove, and an active blade installation bar. The clamping cover has at least one side guiding bar having a wedge outer surface, and a rear eccentric guiding groove. The thumb screw has a head having an under surface and a shank formed on the under surface. The head has a pin formed on the under surface thereof which is able to enter and move in the rear eccentric guiding groove.