Patents Assigned to Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
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Patent number: 5157604Abstract: An apparatus for simultaneously monitoring the heart rate of each of a plurality of subjects comprises a main circuit for transmitting a predetermined signal of predetermined frequency and duration and at predetermined time intervals to cause each of a plurality of remote subcircuits to transmit subcircuit identity data and heart rate data in predetermined timed sequence, a receiver for receiving remote subcircuit transmissions and producing an output representative of the heart rate of a subject and a plurality of remote subcircuits, each remote subciruit having a pulse monitoring device adapted to be secured to a subject for detecting and producing an output in response to a heart beat, and a detector for detecting the pulse monitoring device output and determining the number of the outputs which occur within a predetermined time interval, and being responsive to the main circuit predetermined signal for transmitting to the main circuit a signal representative of subcircuit identity data and the number of tType: GrantFiled: January 17, 1989Date of Patent: October 20, 1992Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of National DefenceInventors: Ivor R. Axford, Duane B. Watson
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Patent number: 5145820Abstract: Activated carbon is used on gas-mask canisters for filtering air to remove toxic vapors. For military use, the charcoal is impregnated with inorganic salts or organic compounds for improving the chemical activity of the charcoal with respect to toxic vapors having low boiling points and small molecular sizes, e.g. cyanogen chloride. One such compound, namely triethylenediamine (TEDA) has been added to charcoal by sublimation at atmospheric pressure. A more effective method of impregnating charcoal with TEDA utilizes reduced pressure 0.13 to 13 Pa, preferably 1.3 Pa as a driving force to facilitate vaporization of the TEDA by sublimation. The activated carbon to be impregnated is dried at 110.degree. C. to 160.degree. C. for three hours and transferred to a vacuum desiccator. The required amount of the amine, namely 1.57 to 12.57%, preferably 4.7% is placed in the container on top of the activated carbon and the container is evacuated to a pressure of about 1.3 Pa and heated at 40.degree. C.Type: GrantFiled: April 26, 1991Date of Patent: September 8, 1992Assignee: Her Majesty the Queen in right of Canada, as represented by Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Septimus H. Liang, Brian H. Harrison, Jack G. Pagotto
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Patent number: 5136950Abstract: A flare comprising an oxygen reservoir section, a fuel reservoir section and a nozzle section; the oxygen reservoir section having a reservoir capable of containing oxygen at high pressure, and a valve operable by an actuator to selectively permit transmission of pressurized oxygen from the reservoir; the fuel reservoir section including a collapsible fuel bag having a fuel orifice at one end and a plug normally positioned over the orifice; and the nozzle section having a oxygen flow deflector, a fuel atomizing region and an ignition region.Type: GrantFiled: February 26, 1991Date of Patent: August 11, 1992Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: John L. Halpin, Maurice Verreault, Simon A. Barton
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Patent number: 5130381Abstract: The invention disclosed relates to novel branched chain hydroxy-terminated aliphatic azido polymers and copolymers with variable molecular weight (MW) and a single step method for the preparation thereof which involves respectively reacting a high (MW) 0.5-5.0.times.10.sup.6) solid rubbery polyepichlorohydrin (PECH) homopolymer and epichlorohydrin/alkylene oxide copolymer (PEEC), with an alkali metal azide in a suitable organic solvent, in the presence of an initiator at elevated temperature. The MW of the azido product may be controlled by including the reaction mixture a basic degradation catalyst (such as LiOCH.sub.3 or NaOH) and varying the amount of catalyst. When the reaction is catalyzed, the MW of the product varies within the range 1,000-40,000 and the hydroxyl functionality is 2-10. Uncatalyzed reactions yield products with MW between 40,000 and 200,000 and a functionality of about 10.Type: GrantFiled: April 5, 1991Date of Patent: July 14, 1992Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventor: Elie Ahad
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Patent number: 5124463Abstract: Glycidyl azide polymer is a hydroxy-terminated aliphatic polyether containing alkyl azide groups. Such a polymer could be used as a plasticizer in composite explosives, gun and rocket propellants. However, the hydroxyl groups of the polymer react with the isocyanate of the curing agent, thereby eliminating any possible plasticizing effect. This problem is overcome by producing a diazido-terminated glycidyl azide polymer without terminal hydroxyl groups. This useful polymer is produced by reacting polyepichlorohydrin with p-toluenesulfonyl chloride in pyridine, and reacting the resulting tosylated polyepichlorohydrin with sodium azide in dimethylformamide.Type: GrantFiled: October 23, 1990Date of Patent: June 23, 1992Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventor: Guy Ampleman
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Patent number: 5108849Abstract: Novel fluid flow field plates for use in a solid polymer electrolyte fuel cell include in a major surface thereof, multiple continuous open-faced fluid flow channels each of which traverses the central area of the plate surface in a serpentine manner. Each of the channels has a fluid inlet at one end and a fluid outlet at the other end which are directly connected to common fluid supply and exhaust openings, respectively, defined in the plate.Type: GrantFiled: August 16, 1990Date of Patent: April 28, 1992Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: David S. Watkins, Kenneth W. Dircks, Danny G. Epp
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Patent number: 5077332Abstract: A carefully balanced formulation of a chromate-free wash-primer to be applied to the surface of predetermined metals as a surface conditioner to inhibit the spread of corrosion and to act as a tie-coat. The formulation comprises a mixture of polyvinyl butyl resin and an anti-corrosive pigment selected from salts of borates and salts of phosphates. It does not contain toxic components and therefore does not pose hazards to either operators or the environment, upon application or during subsequent thermal operations or maintenance procedures on metal substrates. The physical and application properties of the product according to the present invention are comparable to those of conventional wash-primers, which are based on zinc tetraoxy chromate, polyvinyl butyral solution in organic solvents and phosphoric acid used as the catalyst for the system.Type: GrantFiled: January 18, 1989Date of Patent: December 31, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Paul Blattler, Marek Szandorowski
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Patent number: 5075297Abstract: A protective system against chemical warfare agents consisting essentially of at least one alkali metal salt of phenol, acetone oxime, acetophenone oxime and 2,3-butanedione monoxime, a macrocycle chosen from 18-crown-6 or cryptand [2,2,2] and a solvent chosen from dioxolane, tetraglyme, dimethoxyethane, a polyethylene glycol or a polyethylene glycol mono- or diether the system also containing just enough water to dissolve the active ingredient. These systems afford protection against mustard gas (H or HD) and against chemical warfare agents of the V and G types.Type: GrantFiled: November 20, 1984Date of Patent: December 24, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Robert A. B. Bannard, Alfred A. Casselman, John G. Purdon, John W. Bovenkamp
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Patent number: 5075693Abstract: A land navigation system for use in a vehicle, comprises, in combination, a device providing a signal representative of the heading of the vehicle, a device providing a signal representative of the speed of the vehicle, and a computing apparatus responsive to the vehicle heading representative signal and the vehicle speed representative signal for providing a continuous indication of the position, altitude and heading of the vehicle.Type: GrantFiled: October 5, 1989Date of Patent: December 24, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Joseph C. McMillan, Marc Dion, David F. Liang, Michael E. Vinnins, Barry G. Fletcher
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Patent number: 5062874Abstract: A filter canister assembly utilizes a sealant deflector to seal a particulate filter to the canister wall, even after the canister is sealed. The canister housing has a wall and an aperture with a particulate filter disposed therein. The particulate filter has an edge adjacent the wall, and is designed for removing particles of contaminants from a fluid, such as air, passed through the canister. A sealant deflector includes a plurality of vanes standing proud of a support substrate, and is situated between the aperture and the particulate filter and forms a permanent part of the canister assembly. The sealant deflector deflects a sealant in liquid state toward the wall to form a seal between the edge and the wall when the sealant is deposited on the sealant deflector while spinning. This deposits a sealant ring sealing the wall to the edge.Type: GrantFiled: June 5, 1990Date of Patent: November 5, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Pierre Legare, David W. Pike
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Patent number: 5061636Abstract: There is provided a new and useful paper type G and or type V chemical agent detector comprising a paper base including, associated with the base, at least one dye chosen from 4-((4-(phenylazo)phenyl)azo)-phenol (D.Y. 23), p-ethoxyphenyl-azo-.alpha.-hydroxynaphthoic acid (PEN), or 3', 3", 5', 5"-tetrabromophenolphthalein ethyl ester (TBPE).Type: GrantFiled: February 5, 1991Date of Patent: October 29, 1991Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of National DefenceInventors: Dominique Thoraval, John W. Bovenkamp
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Patent number: 5053785Abstract: A surface for an antenna for use in discriminating between horizontal and vertical polarization components of a circularly polorized electromagnetic wave comprises at least one pair of dipoles, one of the dipoles of each pair of dipoles being adapted to receive one component of circular polarization and the other dipole of each pair of dipoles being adapted to receive the other component of circular polarization, and a transmission line extending between and electrically connecting the feed points of the dipoles of each pair of dipoles, whereby an incident circularly polarized electromagnetic wave is reflected when its two polarization components are incident upon their respective dipoles in phase and is transmitted when the its two components are incident upon their respective dipoles 180 electrical degrees out-of-phase.Type: GrantFiled: April 25, 1989Date of Patent: October 1, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: William V. Tilston, deceased, Stephen E. Tilston, Mark Tilston, David Tilston, Thomas Tralman
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Patent number: 5045563Abstract: A method is provided herein for controlling insects which are harmful to agriculture and forestry and which are also harmful both to humans and to domestic animals. The method involves the steps of applying to a locus infested with such insects, a composition comprising a carrier and a biocidal-amount of a specifically-recited phototoxic, naturally-occurring thiophene, acetylene, or a synthetic, structurally-related derivative, analogue or acetylenic compound. Then, that composition, while at that locus, is subjected to UV radiation in the range of about 300 nm to about 400 nm, for a sufficient time to impart, to such phototoxic naturally-occurring thiophene, acetylene, or synthetic structurally-related derivative, analogue or acetylenic compound the desired insect control activity. Certain of these phototoxic naturally-occurring thiophenes, or acetylenes or synthetic, structurally-related compounds are also novel and provide novel insect control compositions.Type: GrantFiled: August 26, 1986Date of Patent: September 3, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Peter Morand, John T. Arnason, Bernard J. R. Philogene, Anita M. MacEachern, Leonard C. Leitch, Jerzy Kaminski
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Patent number: 5043209Abstract: Fluid impermeable, protective clothing is usually impermeable in both directions, and thus sweat is unable to evaporate from the skin or from inner clothing. A buildup of moisture is uncomfortable and, if prolonged, can cause pain and injury. A simple solution to the problem is to insert a two-layer liner in the impermeable clothing which will absorb the sweat. The liner includes an inner layer of vapor permeable, liquid impermeable material such as microporous Teflon (trademark) film, microporous polyurethane film or a hydrophilic polymer coating, and an outer layer of a material highly absorptive of both water vapor and liquid.Type: GrantFiled: August 23, 1989Date of Patent: August 27, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Sylvie Boisse, Brian Farnworth
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Patent number: 5038776Abstract: Head harness form gas mask consists of several pieces of biaxially stretchable elastic fabric stitched together to provide a concave configuration in the relaxed state. The harness is shaped and sized to fit a range of normal human heads by stretching over the back and top of the head. The forward edge of the harness has a number of tongues of the elastic fabric that attach to a gas mask. The preferred material for the harness is a 280 denier bare spandex power net fabric that has a flat load versus elongation curve. A gas mask fitted with the harness applies a uniform pressure within the comfort range on the face of the wearer without significant adjustment of the harness, despite wide ranges in the head size and configuration of the wearer.Type: GrantFiled: May 31, 1989Date of Patent: August 13, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Brian H. Harrison, Lorne A. Main, James A. Newman, Jocelyn B. Pedder, Nicole Ranger, Brian Gallup, Andre M. St. Laurent, Donald Gray
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Patent number: 5038775Abstract: The invention disclosed is an improved scrim means for use in a breathing gas filter assembly which includes a pleated web filter medium. The improved scrim means is of a non-woven microorganism resistant synthetic polymeric material of sufficient rigidity to provide substantially continuous support to maintain the pleats of the filter medium in substantially uniformly spaced relationship, to expedite fluid flow in the plane of the web and to minimize nesting of the filter medium.Type: GrantFiled: January 4, 1988Date of Patent: August 13, 1991Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of National Defence of Canadian GovernmentInventors: John Maruscak, Pierre Legare, Thomas C. Welch, Jr.
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Patent number: 5027458Abstract: A collapsible, heat insulating mattress is provided comprising at least one lattice structure of a foamed plastics material which has an open lattice structure in the relaxed condition, and metal coated foil coverings on each side of the lattice structure with slits extending across the lattice openings. When the mattress is to be stowed it is squeezed to close the lattic openings and occupy less space. The slits allow the coverings to crumple and remain undamaged when the mattress is squeezed for stowing. The coverings may be sheets with the slits cut in them, strips laid side-by-side, either abutting or overlapping, and adhesively secured only at the lattice junctions to the lattice structure.Type: GrantFiled: February 1, 1990Date of Patent: July 2, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Randall J. Osczevski, Brian Farnworth
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Patent number: 5022901Abstract: A pleated paper filter is installed in a gas mask filter canister without the use of adhesives. The paper filter has an annular sealing ring around it of polyurethane. The polyurethane sealing ring has an outer downwardly tapered face that is a force fit inside the canister housing. A retainer on top of the pleated paper filter element has a peripheral flange that engages the seal above the pleated paper and restricts its inward deformation, so that the sealing force between the seal and the wall of the housing is very high.Type: GrantFiled: April 27, 1989Date of Patent: June 11, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventor: Pierre P. Meunier
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Patent number: 5021280Abstract: The invention relates to a composite fabric which will provide insulating properties in the presence of water and which will also permit the passage of perspiration therethrough. The fabric includes a first layer of a water-impermeable insulating material, two layers of a wicking fabric, such layers being positioned adjacent the inner and outer surfaces of the first layer, and a plurality of wicking threads passing through the first layer and securing the wicking fabric layers to the first layer. The insulating layer helps prevent water from reaching the wearer. Perspiration from the wearer is picked up by the inner wicking layer and transferred by capillary action through the threads to the outer wicking layer from which it can evaporate to the atmosphere. If desired the outer wicking layer can be covered by a liquid-water impermeable but water-vapor permeable material.Type: GrantFiled: September 6, 1989Date of Patent: June 4, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Brian Farnworth, Rita M. Crow
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Patent number: 5017424Abstract: The invention disclosed relates to a novel composite material resistant to passage therethrough of noxious substances. The novel composite includes a first layer which may be in the form of a film or coating, of a water and particulate material impermeable, vapor permeable material which is also resistant to sebaceous excretions. A second layer of a vapor permeable stretch fabric material is also provided. Disposed between said first and second layers is a third layer of vapor permeable stretchable fabric material containing a particulate adsorbent material for the noxious substances. Depending upon the application, other optional layers may be included. The composite is stretchable to an extent of 30 to 500% and is intended for use in making close-fitting clothing to protect the wearer from noxious substances.Type: GrantFiled: February 25, 1988Date of Patent: May 21, 1991Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Brian Farnworth, James K. Dix