Abstract: A system and method are disclosed to provide train detection and alerts. Embodiments include monitoring train status data, detecting a presence of a train based on the train status data, capturing current train data and converting the current train data and mapping device location data from one or more mapping devices into train metrics. Embodiments estimate an arrival time of the train at a railroad crossing and a duration of the train at the railroad crossing, check the current train data for errors, apply rules to the current train data to validate the current train data and generate an alert in response to the rules being satisfied. Embodiments display the alert on the one or more mapping devices to notify one or more corresponding users of the one or more mapping devices of the presence of the train.

Abstract: An apparatus for writing or drawing on paper or pads of paper held by a clipboard, the clipboard allowing the paper or pad to be moved upward by the user to maintain support for his or her writing hand as the user writes down the page. The pad-holding clamp is placed along the longer left edge of the clipboard so that it cannot interfere with the pad as the user raises it to and beyond the top edge of the clipboard, Previous designs placed the clamp on the top narrow edge of the panel, where it constitutes an obstruction that prevents the user from moving the pad up. Spring clips that snap into place provide the clamping force required to keep the pad from slipping, and rubber grip strip on leading edge, underside of the clamp and extending the length of the clamp holds even a single sheet firmly.

Abstract: A novel safety device for step ladders. This safety device is fabricated and positioned so as to deter, dissuade and deny the ladder user access to the unsupported top step of a step ladder while allowing the user to an aloft tool organizer for pre-loading job materials there-by eliminating the need to repeatedly climb up and down the ladder carrying materials. More people are killed doing construction work every year than in any other occupation and falls are the biggest killer of employees in the construction industry, many of these falls involve the improper use of ladders. Falls are the leading cause of death in and around the home, according to the National Safety Council, there are thousands of people die from falls around the home each year and many suffer disabling injuries many of these also involve ladders. At work or at home, these accidents invariably occur because the victims violate the basic rules of ladder safety.

Abstract: A position location device that is self powered and worn or carried by a child, pet, or a person with impaired senses such as sight or hearing. The device is a stand alone device, in that it is totally self contained and requires absolutely no external inputs of power or data. Because the device is a stand alone and not dependent on transmitted signals or radiated data, the unit is not susceptible to unwanted transient radiated noise interference or atmospheric noise phenomenon. After an adjustable preset time delay triggers a visual and audio alarm, a monitoring person can easily locate the impaired person before any potential danger occurs. A small child or a person with impaired senses carrying this device is allowed to walk or play freely. If the child or person with impaired senses walks off or gets lost, the device will automatically trigger at the preset time which will alert the monitoring person as to the location of the person.

Abstract: A novel electric, gear driven, frequency controlled oscillating device that oscillates a toy mouse or other toys to amuse, occupy, and entertain pets. Because this unit is gear driven, it provides enough torque to insure self restarting after being stopped by a playful cat. The device has a low profile, thereby making it difficult to tip over. The cat toy operates in a very low variable voltage range, 6 volts DC, for maximum safety. The device is battery operated and has no exposed wires for pets to chew on. Device may be mounted in virtually any plane for further variation.

Abstract: An improved tracer particle is described comprising an ion exchange core having a polymer coating thereon, the coated ion exchange core having a reaction site capable of reacting with a compound containing an oxirane group, said coated ion exchange core having been treated with a compound containing an oxirane group to react with said coated ion exchange core causing an increase in mass of the tracer particle. Preferably, the ion exchange core is labelled with a radionuclide. These particles have improved characteristics including improved stability against leaching and improved handling properties. Such particles are useful in circulatory determinations involving the injection of the particles as a suspension in a physiologically acceptable carrier or medium into the circulatory system of animals.