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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 5131332 | Railway truck with steered axles and primary suspension A railway truck for a railway vehicle which has steerable axles has axle bearings supported by support pedestals. Each support pedestal is located longitudinally by a flexible bar element which aallows the pedestal sufficient vertical movement to accommod... | 07/21/1992 |
| 5119964 | Closure for a container A closure for a container has two parts, namely an inner sealing member and an outer cap. The inner sealing member has a tab extending down between a bottle neck and a depending side wall of the cap. The tab is folded around the cap wall to form an upward... | 06/09/1992 |
| 5120935 | Method and apparatus for oil well stimulation utilizing electrically heated solvents A method and apparatus of stimulating production from an oil well by removing solid wax deposits from a production zone, includes an electrical resistance heater comprised of a packed bed of spherical heating elements lowered through the tubing on a wirel... | 06/09/1992 |
| 5115197 | Fluxgate sensor having adjustable core extending beyond a coil winding and a gradiometer incorporating a pair of sensors A fluxgate sensor has a coil body defining a bore and an axis. A coil is wound on the coil body around the axis. A ferromagnetic core is located in the bore and extends beyond either end of the coil, to improve the sensitivity of the sensor. The core may ... | 05/19/1992 |
| 5111809 | Breathing system A respiratory apparatus, which receives exhaled gas from a user, removes carbon dioxide from and introduces oxygen into the exhaled gas, to present a breathing gas to a user. A respiratory flow transducer in the respiratory apparatus is subjected to the b... | 05/12/1992 |
| 5106048 | Support stands A support stand including three upright, cylindrical lower support legs, each leg having a foot extending perpendicularly of the lower end of the leg. The stand further includes two vertically spaced connecting blocks having aligned linearly arranged aper... | 04/21/1992 |
| 5105802 | Device for working a conditioning substance on a surface A device for working a conditioning substance on a surface comprises a body portion containing an activatable motor. A head attached to the body portion has an outer head and a rotatable inner head. A drive shaft extends between the motor and the head, an... | 04/21/1992 |
| 5104446 | Agglomeration process A process and apparatus are described for agglomerating metal-containing fine sized particles of metallurgical waste materials continuously by means of a combustible agglomerating agent. The process and apparatus may be adapted to dust and fine particles ... | 04/14/1992 |
| 5101532 | Powder dispensing and cleaning apparatus Method and apparatus for controlling dispensing of "dry" powdered compositions particularly carpet cleaning compositions wherein the confined finely divided particles descend in a stream under gravity and have oscillatory movement imparted thereto next be... | 04/07/1992 |
| 5101180 | Bidirectional communication line filter and surge protector This invention relates to a communication line filter for use in series with communication lines. The communication line filter provides for surge protection from voltage spikes and provides frequency filtering to remove selected interference signals from... | 03/31/1992 |
| 5099956 | Plate for adjusting the wheels of a vehicle A plate, for use in adjusting the rear wheels of a four wheel vehicle incorporating all wheel steering has an elongate sheet-form bearing cage, which includes a plurality of apertures. Ball bearings or other rolling elements are located in the apertures, ... | 03/31/1992 |
| 5097647 | Support tower for communications equipment The support tower comprises three (3) generally parallel legs positioned relative to one another to form a triangular configuration and each leg having a bottom end and a top end. A plurality of cross bracing is provided securing the legs to one another i... | 03/24/1992 |
| 5093932 | Examination garment A garment for use in patient examinations where particular examinable areas remain covered until they are individually accessed or until the patient is placed in an examining position. The garment comprises an upper portion for receiving and covering the ... | 03/10/1992 |
| 5095325 | Flash adaptor for adjusting the position of a flash relative to a camera while maintaining the flash in a constant angular orientation The present invention provides a flash adaptor for use with a camera. The flash adaptor comprises a camera support attachable to the camera with a flash support mounted on the camera support and moveable between first and second positions. A flash recepta... | 03/10/1992 |
| 5091046 | Caustic etching of aluminum with matte finish and low waste capability A process for etching aluminum in caustic solution capable of providing a consistently uniform matte finish like that of the never dump process, but with little waste like the regeneration process. Etching is performed in a solution containing free sodium... | 02/25/1992 |
| 5090429 | Vehicle wash apparatus A vehicle wash system includes apparatus for washing side and rear surfaces of a vehicle and apparatus for washing the front and upper surfaces of a vehicle. The apparatus for washing the side and rear surfaces includes a side and rear follower mounted on... | 02/25/1992 |
| 5087293 | Agglomeration process utilizing emulsion A process is described for the agglomeration of fine particles utilizing a combustible agglomerating agent dispersed in an aqueous emulsion. The process is particularly directed to the handling of fine metal containing particles, originating as by-product... | 02/11/1992 |
| 5086521 | Padded toilet seat lid A padded toilet seat lid is made by magnetically induction welding to the upper surface of a plastic lid shell, a plastic frame which surrounds a cushion providing the padding. The frame traps a peripheral margin of the cushion against the upper surface o... | 02/11/1992 |
| 5078415 | Mobile carrier for gas cylinders A mobile carrier capable of carrying a number of gas cylinders comprises a generally horizontal first support surface with at least three wheel supports rigidly attached to it, each wheel support including a rotatably mounted wheel. The wheel supports are... | 01/07/1992 |
| 5076512 | Ventral segmented nozzles for promoting rapid temperature and pressure decay A thrust deflector system for VSTOL aircraft. The thrust directing system consists of a number of spaced-apart, downwardly facing openings along the bottom of the fuselage. The openings are fluidly connected with the outlet of the aircraft engine so that ... | 12/31/1991 |
| 5076938 | Oil treatment method What is disclosed is a method of encapsulating hydrocarbon systems with the combination of an emulsifier solution and a reactive silicate solution. The method comprises the addition of an emulsifier solution to a hydrocarbon, for example, crude oil, then ... | 12/31/1991 |
| 5075634 | Composite bridge amplifier A composite bridge amplifier having four output metal oxide semi-conductor field effect transistors (mosfets) in a bridge configuration. The gates of the mosfets are controlled by an input signal which is amplified in a diamond differential amplifier phas... | 12/24/1991 |
| 5074627 | Anti-tilt and locking mechanism for multi-drawer cabinets An anti-tilt mechanism is provided for a multi-drawer cabinet. The mechanism has a number of housings each of which has a respective locking cam mounted in it. The locking cams are rotatable about respective cam axes from an inactivated position in which ... | 12/24/1991 |
| 5075097 | Method and apparatus for sulfuric acid concentration Dilute waste sulfuric acid is concentrated by heating it against product acid and then passing it through two contact zones separated by a collection zone. The dilute acid scrubs vapour produced in the collection zone and from a high temperature acid rebo... | 12/24/1991 |
| 5062670 | Lock monitor A lock monitor for fitting to lockable objects that have locks that incorporate a bolt mechanism incuding a slidable bolt and mortise. The opening of the mortise is larger in at least one dimension than the engaging face of the slidable bolt. The lock mon... | 11/05/1991 |
| 5062630 | Gymnastic training device A gymnastic training device has a first substantially horizontal support and a substantially vertical support member, the upper end of the substantially vertical support member is rotatably mounted on the lower side of the first substantially horizontal s... | 11/05/1991 |
| 5062588 | Segmented rotatable nozzles A thrust deflector for use in VSTOL aircraft which has a pressurized gas generator. The thrust deflector consists of a number of adjacent nozzles. Each of the nozzles has a body with a first face and a second face. The nozzles further have an inlet for re... | 11/05/1991 |
| 5063448 | Apparatus and method for transforming a digitized signal of an image The apparatus and method employ a variety of units, including Laplacian filters, rank value filters, edge detectors, gain units and summation units, to transform an input digitized signal of an image, the transformation being carried out for each pixel in... | 11/05/1991 |
| 5056151 | Electrical component connection and combinations of electrical components An electrical component combination having a receiver and an amplifier. The receiver has three pins extending from its front surface. The amplifier has six pads on its rear surface. The pins are bonded to three of the pads providing electrical and mechani... | 10/08/1991 |
| 5052061 | Toilet seat latching device This invention relates to a latching device for a toilet seat. This device includes a strap, one end of which is attached to the top edge of the toilet's water tank. The other end of the strap is releasably secured to the bottom of the toilet seat by a ho... | 10/01/1991 |
| 5053864 | Video capture, compression and display system, including averaging of chrominance information The system is controlled by a control receiver receiving commands from the external computer across a primary control bus. A captured unit captures digital samples from a composite video signal and transfers them to a memory unit across a capture bus. The... | 10/01/1991 |
| 5050985 | Film deceleration unit A projector having a rolling loop film transport mechanism is provided with a film decelerating cam unit that is located in advance of the aperture of the projector. Deceleration pins carried by a pair of vertically spaced arms that project from the cam u... | 09/24/1991 |
| 5051182 | Hydrophobic microporus membrane A membrane that is prepared in a water in oil system and comprises a hydrophobic polymer film having controlled porosity. Such membranes are particularly well suited for use in oil drilling processes; in the separation of oil from the waste water of oil r... | 09/24/1991 |
| 5049612 | Depressant for flotation separation of polymetallic sulphidic ores A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and forthing agents in the flotation separation of copper, nickel, lead, zinc sulphides ... | 09/17/1991 |
| 5047151 | Scum skimming system for circular sedimentation and thickening tanks A scum skimming device is disclosed for use in a waste treatment system having a circular sedimentation tank. Such tanks typically have a central waste liquid inlet pipe having inlet ports and an outlet weir around the periphery to maintain the waste liqu... | 09/10/1991 |
| 5047216 | Apparatus for recovering elemental sulphur A piping arrangement for two or three Claus catalytic converters and condenser sets used for recovering sulphur from gas streams containing hydrogen sulphide. One of the converters is operated at a sub-dewpoint temperature while the other(s) is(are) opera... | 09/10/1991 |
| 5044402 | Variable air volume terminal unit A variable volume terminal unit for an air handling system includes a duct having an air by-pass outlet in its top wall, and a deflector blade that can be moved between a "straight through" position in which the by-pass outlet is closed, and a position in... | 09/03/1991 |
| 5044431 | Tube layout for heat exchanger A heat exchanger having two or more tube bundles extending parallel to the shell with a central longitudinal space between the tube bundles. The tube bundles have a longitudinal axis is symmetry in such space. The tubes in each bundle are laid out in conc... | 09/03/1991 |
| 5043080 | Treating contaminated effluents and groundwaters A method of treating a liquid effluent or groundwater containing organic contaminants is provided. The liquid effluent or groundwater containing the organic contaminants is contacted with hydrogen peroxide and transition metal ions. The hydrogen peroxide ... | 08/27/1991 |
| 5042227 | Method & apparatus for compression packaging The present invention provides a method of compacting a sheet article, for example an article of underwear, to produce a stable, substantially rigid, compacted article. This reduces space required for storage and distribution and facilitates packaging of ... | 08/27/1991 |
