Abstract: An inflatable putting green apparatus includes a putting playfield that is selectively inflated or deflated. The putting playfield is inflated by forcing air into the putting playfield and deflated when the air is released from the putting playfield. The putting playfield includes an upper surface having a well positioned therein for receiving a golf ball. The putting playfield is flexible and is rolled up when the putting playfield is not inflated to allow for easy transportation thereof.

Abstract: A system and method of using a blower device to maintain an inflatable carnival attraction at a level of inflation safe for using the inflatable attraction, wherein the blower device operates on electrical energy received from an external source, monitoring the electrical energy, and triggering an alarm if the electrical energy is insufficient for the blower device to maintain the level of inflation safe for using the inflatable attraction, wherein the alarm is of sufficient loudness to be heard by personnel operating the attraction at a location distant from the blower device.

Abstract: A system and method of using a blower device to maintain an inflatable carnival attraction at a level of inflation safe for using the inflatable attraction, wherein the blower device operates on electrical energy received from an external source, monitoring the electrical energy, and triggering an alarm if the electrical energy is insufficient for the blower device to maintain the level of inflation safe for using the inflatable attraction, wherein the alarm is of sufficient loudness to be heard by personnel operating the attraction at a location distant from the blower device.

Abstract: A negative electron affinity device has acceptor dopant concentration increased proximate the emitter face of the III-V semiconductor layer and within the depletion zone effected by an overlying CsO negative electron affinity coating. Methods to accomplish dopant concentration include diffusion, ion implantation and doping during crystal growth.

Abstract: An image intensifier tube that utilizes a photoresponsive layer for producing electrons in response to received radiation, a solid state electron amplifier for multiplying the electrons produced by the photoresponsive layer, a cold cathode for emitting electrons into vacuum, and a phosphor screen for converting impinging electrons into a visible image. The solid state electron amplifier is formed as a semiconductive layer interposed in between a photoresponse layer and a negative electron affinity layer on the photocathode. The solid state electron amplifier receives the electrons produced by the photoresponsive layer, multiplies the electrons and directs the electrons to the negative electron affinity layer. The negative electron affinity layer then directs the electrons through a vacuum to the phosphor screen producing a viewed image.

Abstract: A negative electron affinity device has acceptor dopant concentration increased proximate the emitter face of the III-V semiconductor layer and within the depletion zone effected by an overlying CsO negative electron affinity coating. Methods to accomplish dopant concentration include diffusion, ion implantation and doping during crystal growth.

Abstract: An image intensifier device for producing a color output image includes in a proximity focused intensifier tube, an RGB color filter matrix screen printed upon a glass wafer which is laminated to the input faceplate of the tube and sandwiched between the faceplate and the photocathode. The RGB matrix filters incident light into RGB components which are amplified by the tube. The output image is colorized in a first embodiment by passing white light fluorescing from a phosphor layer through an RGB output filter matrix which is functionally aligned in an operating tube with the input matrix. In a second embodiment, a UV emanating phosphor layer excites an RGB matrix of secondary phosphors. In a third embodiment, IR filters are included in the RGB input matrix and a narrow band output filter is assigned to represent IR information in the RGB output matrix. In a fourth embodiment a plurality of RGB phosphors replace the phosphor layer of the previous embodiments and directly fluoresce color information.