Abstract: An air buffer type apparatus for key durability testing upon a keyboard is provided to carry out a durability test that can mimic a real finger typing operation. The apparatus includes a driving unit, a buffer unit and a depressing unit. The driving unit has a closed air space with a constant internal air pressure. The depressing unit is driven by the driving unit and further includes a plurality of abreasting air cylinders. Each air cylinder includes a pressure zone and a depressing head for depressing the key in the testing. The buffer unit can provide pressure buffering during the key pressing operation.

Abstract: A method and system for analyzing the transfer of motion to a subject on a sleeping surface. A mattress is positioned on a frame, and a subject is positioned on the mattress. A sensor is placed in communication with the subject. The surface adjacent the subject is moved by means of a moving mass, and the sensor detects the motion of the subject. Motion transferred to the subject as a result of the mattress moving is measured and recorded.

Abstract: An instrumented torso model that simulates anatomical features and measures the effects on a body caused by various types of impacts. Simulated bone having material properties similar to that of healthy human bone is surrounded by simulated tissue. At least one sensor array is attached to either or both of the simulated bone and the simulated tissue for measuring the effects of the impacts.

Abstract: The present invention provides a method and device for simulating impact conditions which has a test sled 10, simulated occupant (14), and a pre-impact force-generating device. The pre-impact force-generating device can apply force directly to the simulated occupant being (14), thereby overcoming many of the cost problems associated with applying a low and long duration force directly to a test sled (10). The pre-impact force-generating device can be designed such that instead of providing a low and long duration force to a simulated occupant (14), it provides a short and high impact force to the simulated occupant (14). An impact force-generating device provides impact force directly to the sled (10) which simulates impact conditions.

Abstract: A three-axis vibration acceleration pickup with the handle of a vibration-generating tool such as, an angle grinder or the like, feeds detected vibrations along the three axes to an A/D converter 19. A microcomputer processes the digitized data to feed a display portion. Each time continuous operation of the tool is interrupted, an 8-hour equivalent acceleration value is obtained based on the detected vibration acceleration signal. The result is added to previous acceleration values so as to accumulatively add up the total value in one day. Each time continuous operation is interrupted, a frequency load vibration acceleration value is obtained, and an 8-hour equivalent acceleration value is obtained based on this. A residual surplus time is obtained and displayed by using the 8-hour equivalent acceleration value.

Abstract: The present invention is directed to a constituent sensing system including a container for holding a flowable product. A moveable member is positioned within the container for moving the flowable product within the container in a manner which simulates a flow of the flowable product. A probe is positioned proximate to the moving flowable product for analyzing the moving flowable product.

Abstract: An anthropomorphic dummy head for use in a vehicle crash test is provided that includes a skull member forming a shape of the dummy head and an eye damage measuring part for estimating damage to an eye, wherein the eye damage measuring part comprises a housing disposed inside the skull member, the housing being closed and filled with compressible gas; a one-side-open cylinder that is fixed to a circumference of the housing; a piston that is slidably inserted into the one-side-open cylinder, one end of which is provided with a plate onto which an impact from an outside of the housing is transmitted; and a pressure sensor detecting pressure inside the housing.

Abstract: A manikin that may be used for accelerated seat durability is disclosed. The manikin provides forces that simulate both the weight of a person against the butt portion of a seat and forces produced against the back portion of a seat by human movement.

Abstract: A shock test apparatus for evaluating the shock performance of individual disc drive components includes a base portion and a top cover connected to the base portion to define an interior volume. First and second disc drive components are secured within the interior volume of the apparatus to engage one another in the absence of a shock event. A shock pulse generator includes an actuator for imparting a shock pulse to one of the disc drive components. A second shock pulse generator can be used to impart a shock pulse to the second disc drive component. Means are included for measuring the shock imparted to the disc drive components and for measuring the interaction between the first and second disc drive components during the shock event.

Abstract: The present invention comprises a method for determining the hardness of a vegetable or fruit, wherein the vegetable or fruit is rotated, wherein an impactor element is carried close to the surface of a fruit or vegetable, wherein during rotation of the fruit an impactor element is brought into contact with the fruit or the vegetable a number of times, wherein the impact of the respective impactor element is measured in order to determine the hardness of the vegetable or fruit over at least a portion of the surface thereof.

Abstract: A keyboard testing apparatus includes a housing inside which two clamping members spaced from each other at an adjustable distance for receiving a keyboard to be tested therebetween. A retaining device includes a pneumatic cylinder for applying force to the keyboard for firmly retaining the keyboard in position. An indicator testing device includes several optic sensors for detecting light emitted from indicators of the keyboard. A key testing device includes several key actuators capable to sequentially actuate/de-actuate the keys of the keyboard. A conveying device drives the key actuators relative to the keyboard in order to position the key actuators with respect to each key of the keyboard. A control unit, preferably a processor-based device, controls the operation of the key testing apparatus and receives test signals from the keyboard and the optic sensors to determine if the keyboard function normally. The control unit generates a warning signal via a warning device when the keyboard is abnormal.

Abstract: A measurement cylinder having a passage for an indenter hammer to go forward and backward formed therein is provided with two light receiving holes a distance S apart. The times required for the indenter hammer to go past the light receiving holes are measured and, in accordance with the required times measured and the distance S, the impacting velocity and the rebounding velocity of the indenter hammer are detected, whereby it is made possible to greatly improve the detecting accuracy of both the velocitys.

Abstract: An apparatus (20) to simulate the behavior of vehicle occupant and safety systems in a rollover accident, comprising: a frame (30) adapted to receive a portion of a vehicle to be tested or test buck (40), the frame being articulated, about a pivot (36), to enable it to rotate a predetermined amount; forcing device (24;72) for causing the frame, and test buck, to rotate.

Abstract: A golf shaft spine locating apparatus is provided having a frame. A pair of vertical supports for the shaft are mounted to both ends of the frame. The shaft is placed on the supports and is rotated on the supports. A weight is applied to the shaft and exerts a downward force on the middle of the shaft between the supports while permitting rotary motion of the shaft on the supports. As the downward force is applied on the shaft and the shaft is rotated on the supports, the spine of the shaft is located.

Abstract: Heart valve leaflet selection methods and apparatuses which subject individual leaflets to loads and measure the resulting deflection to more reliably group leaflets of similar physical characteristics for later assembly in prosthetic heart valves. The deflection testing may be accomplished using a variety of test set ups which are designed to impart a load on the leaflet which simulates the actual loading within a heart valve. The results from a number of deflection tests are used to categorize individual leaflets, which data can be combined with other data regarding the characteristics of the leaflet to better select leaflets for assembly into a multi-leaflet heart valve. In one embodiment, the deflection test is combined with an intrinsic load test, and leaflets having similar deflection and intrinsic load values used in the same heart valve.