Abstract: A vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: A vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: Vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non continuous retroreflective pattern may include retroreflective regions and non retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: The disclosure describes vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: A vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: The disclosure describes vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: Protective garments such as firefighters' coats and pants are described. The garments have an outer shell material made from substantially non-overlapping panels stitched together. Some panels are specially designed and reserved for carrying an enhanced visibility material on a majority of their exposed surface area. The enhanced visibility material can be a retroreflective material such as an exposed lens beaded construction, a fluorescent material, or a phosphorescent material. The enhanced visibility panel(s) are stitched to non-enhanced visibility panels so that if damaged, the stitch can be removed and the enhanced visibility panel replaced to repair the garment.

Abstract: An apparatus for a portable planer 12 having rails 14 with means for mounting to a single use stand 16, 18. The planer 12 has a pair of rails 14 with bolts 48 depending from the base thereof having threads with nuts 50 positioned on the distal ends whereby a stand 16, 18 having been constructed on site and leveled regardless of ground slope has means for receiving the threaded bolts 48 whereupon fasteners may be placed on the rail post distal ends whereby the rails form an integral part of the single use stand. The motorized planer 12 is mounted to a carriage 40 having wheels 42 for mounting on the rails 14 whereby the planer can be selectively moved from one rail end to the other. Positioned between the single use rail mounts are supports 26 for placing the work piece thereon for processing with the planer having means for receiving various blades 56, 58 and means for varying 62, 64 the height of the blade relative to the work piece.

Abstract: The disclosure describes vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: The disclosure describes vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: Protective garments such as firefighters' coats and pants are described. The garments have an outer shell material made from substantially non-overlapping panels stitched together. Some panels are specially designed and reserved for carrying an enhanced visibility material on a majority of their exposed surface area. The enhanced visibility material can be a retroreflective material such as an exposed lens beaded construction, a fluorescent material, or a phosphorescent material. The enhanced visibility panel(s) are stitched to non-enhanced visibility panels so that if damaged, the stitch can be removed and the enhanced visibility panel replaced to repair the garment.

Abstract: The disclosure describes vapor permeable retroreflective material for use on protective garments. The material may be formed in a non-continuous pattern that provides a high-level of retroreflective brightness, yet also provides adequate permeability to prevent exposure to trapped thermal energy and heated moisture. The non-continuous retroreflective pattern may include retroreflective regions and non-retroreflective regions arranged such that thermal decay through the protective garment is not substantially decreased in the regions corresponding to the retroreflective material. Rather, vapor permeation and thermal decay through the garment may be substantially the same as if the retroreflective material was not present.

Abstract: A calibration apparatus for checking the accuracy of DLco testing machines includes a pair of syringes mounted side by side in a frame and joined by a valve controlled gas passageway to a coupling adapted to mate with the testing machine. The first syringe receives gas from the testing machine and the second syringe has a chamber from which gas of a known concentration is returned to the testing machine. The chamber of the second syringe is flow connected by a valve to a source of test gas. The gas passageway is constructed in such a manner to reduce dead air space and to allow purging with test gas to eliminate contamination with ambient air or gas of previous tests.

Abstract: An insulated cooler for carrying perishables and cooling medium such as ice is improved to provide an extended period during which low temperatures are maintained. A sheet of flexible, synthetic insulation material is placed over the perishables and cooling medium. The sheet is pressed downwardly against the perishables and cooling medium, thus substantially conforming to the upper surface thereof. A dead space may be defined above the sheet and below the cover of the cooler. Preferably, the insulation material is air entrained polypropylene, which could be washed, is sufficiently flexible, and can be trimmed to fit the cooler. The insulation material is preferably folded into at least three thicknesses and trimmed to conform to either the footprint of the insulated cavity, or to an enlarged size, so that the outer edges of the material can be tucked down and about the perishables in the cooler.

Abstract: A high frequency ventilator which generates a high frequency pressure wave in a supply of ventilating gas for supporting ventilation in air breathing animals. The high frequency pressure wave causes the ventilating gas to be exchanged and to diffuse through the animal's lungs fast enough to support ventilation without spontaneous breathing on the part of the animal and without the aid of a separate ventilator.

Abstract: A high frequency oscillating ventilator. A flow of gas is conducted from a gas source to a high frequency oscillator. The high frequency oscillator comprises a housing including a magnet and having a diaphragmetically sealed piston mounted therein, an inlet connecting the space within the housing on the first side of the diaphragm to the gas conducting means, and a coil mounted to the first side of the diaphragm. Circuitry is provided which is operable to reverse the polarity of the flow of the current in the coil, thereby causing the diaphragm to move back and forth within the housing. A tube connecting the space on the second side of the diaphragm to the gas source and the patient's airway is provided. Also disclosed is a method of ventilating a patient with the high frequency oscillating ventilator, and a double lumen endotracheal tube for use in connection therewith.

Abstract: A method of ventilating an air breathing animal at a high frequency. A flow of gas is supplied to the first side of a piston mounted within a housing while the flow of gas out of the housing is restricted to elevate the pressure on the first side of the piston. A flow of gas is also supplied to the second side of the piston, which is connected to an air breathing animal, while the piston is alternately moved back and forth within the housing at a selected frequency, amplitude and period, thereby alternately forcing gas into and drawing gas out of the animal. The flow of gas out of the animal is also restricted to elevate the pressure on the second side of the piston. The flow of gas to the first side of the piston both cools the piston and housing and helps to equalize the pressures on both sides of the piston, helping to insure accurate conversion of the mechanical movement of the piston into a pressure wave in the gas on the second side of the piston.

Abstract: A high frequency oscillating ventilator. A flow of gas is conducted from a gas source to a high frequency oscillator. The high frequency oscillator comprises a housing including a magnet and having a diaphragmatically sealed piston mounted therein, an inlet connecting the space within the housing on the first side of the diaphragm to the gas conducting means, and a coil mounted to the first side of the diaphragm. Circuitry is provided which is operable to reverse the polarity of the flow of the current in the coil, thereby causing the diaphragm to move back and forth within the housing. A tube connecting the space on the second side of the diaphragm to the gas source and the patient's airway is provided. Also disclosed is a method of ventilating a patient with the high frequency oscillating ventilator, and a double lumen endotracheal tube for use in connection therewith.

Abstract: This device functions as a compressor or pump when driven in rotation, and functions as an engine when driven by expansion energy. A housing encases a vane rotor mounted off center for rotation in a cylinder. The slotted rotor is constructed with vane bearing inserts retaining arcuate cast iron vane bearings adjacent the multiple vanes. Vanes are flexibly secured by vane retainers mounted on a rotatible central shaft surrounded by a bushing functioning as a bearing. Improved sealing means are incorporated encircling the rotor and at the edges of the rotor vanes. The device may be utilized as an internal combustion engine by incorporating fueling and spark means. The machine is particularly suited to be driven by expanding gases such as natural gas, air, fluorocarbon gases, or steam as a motor.