Patents Assigned to Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
  • Patent number: 5016004
    Abstract: A remotely controlled mobile target for weapons training involves a commercially available all-terrain-vehicle carrying a 1/2 scale target shell (e.g. a tank). The vehicle has a motor and a brake-generated skid steering system. A video camera mounted on the vehicle provides the operator at the remote station with a visual image of the vehicle's progress and in response thereto the operator, using a joystick controller, can send command signals to the vehicle to control operation of the steering system and the motor. Three-way solenoid valves, connected to the hydraulic brake system, a source of compressed gas and the electronic controller operate in response to the command signals to effect operation of the brakes for steering or braking. The target is inexpensive, easy to operate and closely simulates the operation of a highly maneuverable, fast vehicle, such as a tank.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: May 14, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: John W. Funk, David H. Saint
  • Patent number: 5009845
    Abstract: There is provided a new and useful paper 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-ethoxypenyl-azo-.alpha.-hydroxynaphthoic acid (PEN), or 3', 3", 5', 5"-tetrabromophenolphthalein ethyl ester (TBPE).
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: April 23, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Dominique Thoraval, John W. Bovenkamp
  • Patent number: 4992219
    Abstract: A method and an apparatus are provided for securing a bed of charcoal under pressure in a plastic material housing in the manufacture of charcoal filter canisters for gas masks. The bed of particulate charcoal is placed in the housing and covered with a retainer. A compactor is placed on the retainer and loaded to produce the desired compaction of the charcoal. An ultrasonic welder is then used to secure the retainer in place for one embodiment, a spring-loaded compactor is placed on top of the retainer and an ultrasonic nodal horn is placed over the compactor. The horn presses the compactor against the retainer with the necessary compressing force to compress the charcoal bed, while at the same time producing an ultrasonic weld around the periphery of the housing, welding the retainer in place. The compactor seats on a nodal point of the horn, so that ultrasonic vibrations are not transmitted from the horn through the compactor to the charcoal bed.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: February 12, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventor: Pierre P. Meunier
  • Patent number: 4981738
    Abstract: This invention relates to a multi-layer protective fabric for protective suits used in hazardous or toxic environments. A first layer comprises strips of water and vapor impermeable material, there being a gap between adjacent such strips. A second layer comprises a plurality of strips of a wicking material with each such strip covering the inner surface of a first layer strip, passing through the gap between adjacent strips and covering the outer surface of the adjacent first layer strip. Moisture, such as perspiration will pass via the wicking material through the gaps past the first layer for evaporation and diffusion through a third layer of a liquid impermeable/vapor permeable material which extends over the second layer material covering the outer surfaces of the first layer.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: January 1, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Brian Farnworth, Randall J. Osczevski
  • Patent number: 4982198
    Abstract: A dipole feed for a paraboloidal reflector antenna uses a conical reflector to direct the radiation of the dipole towards the concave reflecting surface of the parabola. The size and apex angle of the conical reflector are optimized to yield the desired feed pattern, the optimization parameters depending on the reflector size and focal length and being obtained numerically or experimentally to maximize reflector gain.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: January 1, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Lotfollah Shafai, Prakash Bhartia
  • Patent number: 4978806
    Abstract: A method for preparation of 1-methoxycyclohepta-1,3,5-triene in commercial quantities, which comprises the steps of heating 7,7-dichloro-1-methoxybicyclo[4.1.0]heptane in a refluxing reaction solvent comprising a lower boiling aromatic amine, at reflux, until suitable amounts of 1-methoxycyclohepta-1,3,5-triene have been produced, and recovering the 1-methoxycyclohepta-1,3,5-triene. Suitable reaction solvents include 2-picoline, pyridine and 2,6-lutidine. The method according to the present invention results in safer temperature control in the production of 1-methoxycyclohepta-1,3,5-triene, and increased yields.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: December 18, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Gordon E. Langford
  • Patent number: 4976924
    Abstract: A thermal desorption unit includes a base plate and a pair of spaced apart plates arranged perpendicularly to the base plate and positioned to hold a magazine of tubes between the spaced apart plates. The unit includes apparatus for selectively extracting, handling, heating, and reinserting a tube from the magazine. The tubes are heated to drive off the contents and flushed to clean the inside of the tubes.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: December 11, 1990
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of National Defence
    Inventors: John M. McAndless, James R. Hancock, Donald B. Barnett, Orville J. Olm, Terry J. A. Locke, John Maybank
  • Patent number: 4967636
    Abstract: The invention provides a system for breaching a lane in a minefield containing pressure sensitive mines. A mobile carrier mounts fuel, nitrogen and water tanks, a hose magazine and a launch rail. A flexible hose is folded into the magazine for rapid deployment therefrom and carries a detonating cord therein. A tow vehicle, such as a rocket, is connected to the free end of the hose so that when it is launched it will pull the hose across the minefield. Thereafter, pressurized nitrogen is used to drive liquid fuel into the hose, followed by a slug of water between the fuel-containing section and the carrier. Detonation of the cord creates a fuel droplets-in-air-cloud above the hose, which cloud is subsequently detonated to create a pressure wave which, in turn, detonates or neutralizes the mines along the desired lane, allowing vehicles and personnel to travel therealong.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: November 6, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Stephen B. Murray, David S. Weiss, Ingar O. Moen, Stephen A. Ward
  • Patent number: 4964061
    Abstract: It is the purpose of this invention to provide a method and apparatus for a compliance control in each degree of freedom of a robotic system independently of other control parameters. This independent compliance control capability allows dexterous assembly operations to be done without elaborate fixture of a work piece. The method of controlling compliance and position of an actuator comprises the steps of acquiring a raw Myoelectric signal from the muscles of a teleoperator, processing the raw Myoelectric signal into compliance control and position control signals and applying the control signal to an actuator(s) of the teleoperated robotic system.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: October 16, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Juliusz J. Grodski, Guy B. Immega, Peter D. Lawrence
  • Patent number: 4958572
    Abstract: A practice projectile for use with military aircraft and the like for training pilots in attacking ground targets comprises a unitary body formed of sintered sponge iron powder and having a sintered density equivalent to the apparent density of a projectile to be simulated.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: September 25, 1990
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Yvan Martel
  • Patent number: 4951061
    Abstract: An interferometric acoustooptic signal processor utilizing a circular antenna array to cover a 360 degree field of view. Each antenna element of the array is connected to an input port of a Butler matrix. The signals are phase shifted within the Butler matrix and applied to a multi-channel periodic Bragg cell, resulting in generation of one or more acoustic waves therein. A laser beam is used to illuminate the Bragg cell and is modulated due to interaction with the acoustic waves, resulting in diffraction of the laser beam and generation of a diffracted beam pattern output from the Bragg cell. A Fourier transform lens focuses the diffracted laser beam on a back focal plane at a point characterized by two perpendicular coordinates designating the input signal power spectrum and the angle of incidence in relation to the antennae, respectively.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: August 21, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Jim P. Lee
  • Patent number: 4947177
    Abstract: A narrow band noise cancellor and signal correllator which obtains an increased signal to noise ratio of a received signal from a multi sensor array; the resulting output signal is at double the input frequency. A pair of narrow band similar input signals are added, and subtracted, and the resulting signals are multiplied together. The positive and negative product terms of the signal are separated and the positive term inverted, and the resulting separated signals are individually added with the squared representation of one of the input signals. The resulting added signals are summed and the sum is passed through a narrow band filter having its center frequency at double the input frequency.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: August 7, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Noel O. Fothergill
  • Patent number: 4938965
    Abstract: The invention disclosed is a composition and method for the slow sustained ocular delivery of a prophylactic agent contained in liposome vesicles. The liposome vesicles are composed of phospholipid and cholesterol in a molar ratio of phospholipid to cholesterol of 8:2 to 1:1. Preferably, stearylamine is included in the liposome composition.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: July 3, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventors: Pang N. Shek, Raymond F. Barber
  • Patent number: 4938058
    Abstract: A sting for supporting and spinning small diameter models in a wind tunnel consistsing of a rear section securable within a standard wind tunnel, a cone shaped region at the front end of the rear section and a small diameter, model supporting, front section upon which a balance and a model can be mounted; an electric motor within the rear section aligned along the string axis; a drive gear mounted on the motor shaft; a driven shaft parallel to the motor shaft and extending from the motor to the cone shaped region, a driven pinion at the rear end of the driven shaft in meshing contact with the drive gear, a drive pinion at the front end of the drive shaft, a driving sleeve on the front section having a driving gear secured to its rear end and in engagement with the drive pinion, and a pair of spigots at the front end of the driving sleeve for contacting a model to be tested.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: July 3, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventor: Bertrand Girard
  • Patent number: 4938059
    Abstract: A strain gauge balance consisting of an outer longitudinal shell and a monopiece inner center core; the outer shell having a open end and a closed end with a frustoconical bore extending towards the closed end, and the inner core having frusto conical shaped ends, one end being sized to fit within the frusto conical core and the other end being sized to fit into a sting; four radially extending, equally spaced, webs formed within the core and at each end of the core inboard of the frusto conical ends, and a central region of two longitudinally separated, semicircular cross-section parts each being formed within the part, with tensioning rings, one disposed diagonally to the other, and a number of strain gauges secured to the webs and the rings to determine induced strain in 6 degrees of freedom.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: July 3, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Gilles Faucher, Marc-Andre Paradis, Bertrand Girard
  • Patent number: 4927396
    Abstract: A sonobuoy comprising: a container adapted to nest side-by-side and end-to-end with plural containers of the same configuration; and inflatable parafloat collapsed into an upper chamber of the container; compressed gas means in the container for inflating the parafloat; a hydrophone; a hydrophone suspending cable assembly; and release means for normally securing the hydrophone and the suspending cable assembly to the container and operable to release the hydrophone and suspending cable in response to deposition of the container in a body of water.
    Type: Grant
    Filed: January 19, 1989
    Date of Patent: May 22, 1990
    Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of National Defence
    Inventor: Gordon H. Wood
  • Patent number: 4926853
    Abstract: An improvement to a face mask is disclosed which has two eyepieces, a pliable full face covering, breathing means and means for sealing and securing the mask to the face of a wearer. The improvement being nose occluding means which include a pair of prong members made of a rigid material. Each prong member is adjustably attached at one end thereof to a lower rim portion of a respective eyepiece at an angle with respect thereto so that it is directed inwardly toward the nose of the wearer. A method of nose occlusion in order to perform the valsalva maneuvre utilizing the improved face mask is also disclosed.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: May 22, 1990
    Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government
    Inventor: Pierre P. Meunier
  • Patent number: 4925505
    Abstract: The invention disclosed is a foamable fluid explosive composition which is capable of being projected over suspect terrain to form a continuous blanket of explosive foam which may be detonated by conventional means. The novel fluid explosive composition comprises______________________________________ a suitable liquid foamable explosive 57-98%/w a suitable liquid emulsifier 2-6%/w a suitable stabilizer 0-5%/w a suitable thickener 0-7%/w a sensitizer 0-5%/w energy enhancer/inert metals 0-20%/w ______________________________________wherein the amounts of ingredients are expressed as percent by weight of the composition, excepting the sensitizer which is expressed as percent by weight of the explosive. The same fluid explosive composition is adapted for aerosol delivery by including a suitable compressed liquified gas as propellant.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: May 15, 1990
    Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of National Defence
    Inventors: Mark A. Baker, C. John Anderson
  • Patent number: 4924445
    Abstract: A sonobuoy comprising: a sonobuoy body; a main cable having a proximal end secured to the body and a distal end; a spool on which the cable is wound from the distal end toward the proximal end; and release means securing the spool to the body, and operative in response to immersion in water to release the spool from the body.
    Type: Grant
    Filed: March 9, 1989
    Date of Patent: May 8, 1990
    Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of National Defence
    Inventor: Murray O. Hill
  • Patent number: 4922262
    Abstract: A log-periodic slot antenna has adjacent radiating elements connected by off-center co-planar lines thereby providing the required phase reversal and modifying the element impedance to match that of the co-planar line. By providing a ground plane restricted in size to that of the element array a difference pattern can be formed by the single antenna giving a sharp null in the longitudinal direction of the antenna. A dual log-periodic antenna formed from two such single antennas can be fed in-phase and produce two difference patterns one in the co-planar plane and one in the cross-polar plane.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: May 1, 1990
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventor: Yung L. Chow