Abstract: Certain embodiments provide emergency release bracket systems for use in connection with vehicle signage. The emergency release bracket system includes a mounting bracket for operably connecting to a vehicle. The mounting bracket includes bent out tabs and mounting plate attachment holes. The emergency release bracket system includes a mounting plate for operably connecting to vehicle signage. The mounting plate includes tab windows and tab slots. The mounting plate is adjustably and detachably coupled to the mounting bracket by mating the tab windows of the mounting plate with a portion of the bent out tabs of the mounting bracket. The mounting plate is secured to the mounting bracket using removable couplings extending through the tab slots of the mounting plate and the mounting plate attachment holes of the mounting bracket.

Abstract: Certain embodiments provide emergency release bracket systems for use in connection with vehicle signage. The emergency release bracket system includes a mounting bracket for operably connecting to a vehicle. The mounting bracket includes bent out tabs and mounting plate attachment holes. The emergency release bracket system includes a mounting plate for operably connecting to vehicle signage. The mounting plate includes tab windows and tab slots. The mounting plate is adjustably and detachably coupled to the mounting bracket by mating the tab windows of the mounting plate with a portion of the bent out tabs of the mounting bracket. The mounting plate is secured to the mounting bracket using removable couplings extending through the tab slots of the mounting plate and the mounting plate attachment holes of the mounting bracket.

Abstract: A method and structure use characteristics of a plasma discharge for verifying a hermetic seal. The plasma discharge is created in a hermetically sealed cavity by a pair of spaced electrodes that extend from tips inside the hermetically sealed cavity to contacts outside the sealed cavity. An electrical bias is applied to the contacts that is sufficient to create a plasma discharge in a properly hermetically sealed cavity but not in an unsealed cavity.

Abstract: A self contained portable sprayer system including a tank for receiving a fluid mixture and has a top portion with a cap coupled by a threadable connection. The tank has a flat bottom portion. A fluid release valve with a fluid release tube threadably connected to the top portion of the tank. The release valve has a pair of flexible hoses. A pressure switch that has an air receiving tube at one end threadably connected to the top portion. The pressure switch has a pressure hose. A pressure release valve is positioned on the top portion of the tank. A towing hitch for carrying the tank has, an elongated vertical portion, a short vertical portion, and a flat lower portion. The elongated portion has a distal side with a pair of wheels, and one shelf supporting a power source. The lower portion seats the tank when positioned within the towing hitch. Lastly, a cyclic air pump is positioned on another shelf of the elongated portion and forces air into the tank.

Abstract: An improved air dryer for pneumatic systems (10). The improved air dryer (10) employs air-to-air and an air-to-refrigerant heat exchanger portions (12-14) that are substantially parallel and coextensive. Each heat exchanger portion (12-14) is made up of a plurality of tube units (16-52), each tube unit (16-52) having three concentric tubes (22-24-26-58-60-68). The intermediate tube (60) of the air-to-refrigerant portion (14) includes a helically deformed central portion (66) to increase surface area and create turbulence within adjacent passageways (70-74). The tubes (16-52) terminate at each end in separate header units (34-40-46-80-86-92). Incoming air is passed co-currently, then countercurrently, in the-air-to-air portion (12) with air that has been dried, whereupon a pre-cooling stage is achieved. This pre-cooled air is then passed counter-currently, then co-currently, to refrigerant in the air-to-refrigerant portion (14) for causing condensation of moisture therein.

Abstract: A high efficiency system for removing moisture from compressed air and the like as used in pneumatic systems. To effectively achieve dew points of about -100 degrees F., the system utilizes two integrated dryer stages. The first stage causes the incoming air to be cooled to a dew point of about -35 to -40 degrees through the use of a refrigerant flowing in a heat exchanger to remove the heat of the air. Preferably for this cooling there is a precooler in the form of an air-to-air heat exchanger. The refrigerant is derived from a system having a compressor. The second stage of drying is achieved by passing the outlet air from the first stage, after removing moisture droplets and mist via a separator unit, into a heatless bed of desiccant or like material. Preferably, two beds are employed so as to permit one bed to be removing moisture while collected moisture is being removed (purged) from the other bed.

Abstract: A heat exchanger for dehumidification of compressed air. The improved heat exchanger employs an air-to-air heat exchanger portion and a air-to-refrigerant heat exchanger portion that are arranged substantially parallel and coextensive. Each of these heat exchanger portions are made up of a plurality of tube units, each tube unit having three concentric tubes. The tubes terminate at each end in separate header units. Incoming air is passed co-currently in the air-to-air heat exchanger portion with air that has been dehumidified, whereupon a precooling stage is achieved. This precooled air is then passed countercurrently to refrigerant in the air-to-refrigerant portion of the heat exchanger for causing condensation of moisture therein. This cool air is passed through a moisture separator, with the dehumidified air being recycled through the air-to-air heat exchanger portion prior to use, as set forth above. The components are fabricated from standard tubing elements.