摘要:
A liquid electrolyte battery incorporates level sensors sensing and providing an output indicative of the presence or absence of electrolyte or other liquid proximate the sensors. The sensors can be self-powered or powered by the battery or by a separate battery.
摘要:
A therapeutic support device includes a bladder having one or more independently inflatable compartments, each including a plurality of inflatable cells. When inflated, each inflatable cell forms a contact node that may support a user or another object disposed thereon. The inflatable compartments can be alternately inflated and deflated such that contact pressure can be applied to and relieved from corresponding portions of the user's body in an alternating manner.
摘要:
A battery electrolyte monitor including a probe and a control circuit. The control circuit includes a capacitive element within the probe. The probe is acid resistant, and therefore the probe protects the capacitive element from contact with the battery electrolyte. The control circuit periodically charges and discharges the capacitive element using direct current. Depending on at least one of a charging characteristic and a discharging characteristic, the control circuit determines the electrolyte level. If the electrolyte is below a desired minimum level, the control circuit illuminates an indicator light.
摘要:
A mechanical interface for a touch sensor includes a housing (32) for the sensor, a triggering member (26) for triggering the sensor, and biasing means (36) for biasing the triggering member away from the sensor. Application to the triggering member of a predetermined force overcoming the biasing force causes the triggering member to move toward and into an electric field generated about the sensor, thereby triggering the sensor.
摘要:
A display includes a substrate (110) having front and rear sides and defining one or more optical path (112). A light source (116) corresponding to each optical path is associated with the rear side of the substrate (110). Light propagates from the light source (116) to the front side of the substrate (110) through the corresponding optical path (112). Offsetting the light source (116) from the centerline of the optical path (112) improves light diffusion by promoting light reflection off the sides of the optical path. Multiple light sources of different colors can be associated with each optical path (112) to provide for variable color output from each optical path at the front side of the substrate (110).