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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 |
| 5339677 | Hydraulic hose flex-impulse tester A hydraulic hose impulse tester capable of simultaneously testing multiple samples of hydraulic hose in a stationary-impulse condition and in a flexing-impulse condition in the same test environment. The tester eliminates varying extraneous factors which ... | 08/23/1994 |
| 5330265 | Apparatus and apparatus for mixing and cooling molding sand A process using an improved apparatus for mixing and cooling molding sand. The apparatus including a molding sand mixer that mixes molding sand and further having an adjustable water supply structure; sets of output sensors having a temperature sensor and... | 07/19/1994 |
| 5309653 | Snow deflection system A snow deflection system for a snowplow includes an arcuate foil and a preferred belt. Both the foil and the belt are attached to the moldboard of the plow so that the preferred belt keeps the plowed snow close enough to the moldboard to allow the arcuate... | 05/10/1994 |
| 5308308 | Method of cardholder and pocket construction A card display pocket formed of three sheets of fusible material. The first sheet is a nylon/vinyl material that is slit one way to receive the second sheet of a frosty vinyl material which may be slit a different way from the first sheet to form speciall... | 05/03/1994 |
| 5303496 | Scent distributing method for hunters A method for applying a scent to a hunting or other desired location without approaching the area or contaminating it with human scent. The desired scent is placed in a carrying projectile means such as a pellet for a projectile delivery means such as a c... | 04/19/1994 |
| 5275863 | Seal protector for use with strapping and method for forming the seal protector A seal protector for protecting material packed with metal strapping and a strapping seal from damage by the strapping seal and a method of forming the seal protector. The seal protector is formed from a piece of foldable crush resistant material into whi... | 01/04/1994 |
| 5275483 | Center bottom mounted drawer slide A bottom center mounted drawer slide mechanism for a drawer and cabinet. The mechanism is designed to be mounted along the bottom centerline of the drawer. The mechanism includes a cabinet track structure consisting essentially of a substantially C-shaped... | 01/04/1994 |
| 5224727 | Anti-jackknifing mechanism An anti-jackknifing system for use on a tractor having a fifth wheel and a trailer having a trailer pin. The anti-jackknifing system is made of a non-cylindrical pin attached to the existing trailer pin, and a freely rotating brake disk mechanism. The bra... | 07/06/1993 |
| 5219634 | Single compression molded moisture resistant wood panel A compression formed panel of a wood fiber board and a plastic resin means impregnated into the wood fiber board for maintaining the shape of said door core or panel after compression, and a method for making same requiring either a catalyst that causes t... | 06/15/1993 |
| 5219069 | Chainable plastic coin holder A coin holder made of plastic, or another suitably flexible material, having a flexible base, a flexible wall extending at a right angle from the base, a T-shaped tab extending outwardly from the base, and one or more tab-receiving slots in the base. The ... | 06/15/1993 |
| 5197786 | Rigid drive axle with cambered wheel hubs A rigid cambered drive axle has a straight rigid housing for the two drive axles and a cambered spindle, integral with the end of the housing, for supporting a wheel hub. A drive in each inside of the housing turns a cambered drive plate through a directi... | 03/30/1993 |
| 5197569 | Constant depth reservoir The present invention is an apparatus for regulating the amonut of oil, lubricant, or other type of lubricant applied to a surface of a work piece in order to reduce friction during a machining process. It comprises a primary reservoir, a needle valve, fl... | 03/30/1993 |
| 5191678 | Wind resistant door hardware A spring loaded door hinge comprising a rod that moves with the door as the door pivots. Attached to the door frame is a flange. The door is attached to the rod by means of collars. The tails of the coil springs extend from the rod so that they may, depen... | 03/09/1993 |
| 5184658 | Cardholder and method of cardholder construction and pocket construction A card display pocket formed of three sheets of fusible material. The first sheet is a nylon/vinyl material that is slit one way to receive the second sheet of a frosty vinyl material which may be slit a different way from the first sheet to form speciall... | 02/09/1993 |
| 5172097 | Security box for mounting against a wall and for holding keys A security box for mounting against a wall and capable of holding keys and the like. The security box having a cover capable of being in alternatively open and closed positions and two switches for use with a standard electrical alarm circuit. The box con... | 12/15/1992 |
| 5169367 | Chain drive system for vehicles A drive chain assembly for vehicles having two chains, an idler sprocket, and a thrust link or strut. The first chain extending from the vehicle motor to the idler sprocket. The second chain extending from the idler sprocket to a driven axle sprocket. The... | 12/08/1992 |
| 5160014 | Conveyor structure for the sidewall of a bottle combiner A conveyor structure for a sidewall of a bottle combiner. The sidewall having a top plate, bottom plate, and end plate to which are mounted two sets of roller bars at 45 degree angles to the top, bottom and end plates and at 90 degree angles to each other... | 11/03/1992 |
| 5116500 | Portable potable water purifier kit A liquid filtration device having a collapsible funnel, a multi-turn spiral filter path, and a cup for storing the liquid and for storing the funnel and filter when not in use so that a compact storable transportable unit with a long filtration path is ac... | 05/26/1992 |
| 5101802 | Spark ignition safety circuit A spark ignition safety circuit and starting circuit having grounding of the primary winding through safety switches and preferably also through the ignition switch. The primary winding of the ignition circuit is grounded through closed safety switches wh... | 04/07/1992 |
| 5094062 | Flex rein A training mechanism for training a horse to draw in its mouth substantially horizontally so that its head flexes at the poll. A strap is attached to the saddle at a level close to the level of the mouth of the horse and is slidable through an opening at ... | 03/10/1992 |
| 5091174 | Preservative for biological specimens An embalming fluid. A chemical composition comprising chemicals that are, generally, non-hazardous to humans in the concentrations used. Also, specimens preserved in the composition look and feel more life-like than specimens preserved in formaldehyde bas... | 02/25/1992 |
| 5056461 | Circuit board dipping fixture A fixture for supporting a circuit board in a position generally horizontal to the surface of the protective material in the tank as it is dipped into a tank and coated with protective material. This allows a precisely predetermined area of the circuit bo... | 10/15/1991 |
| 5054362 | Controlled shotshell advancing mechanism for shotshell reloader The invention is a shotshell advancing mechanism on a shotshell reloader with rotating turret held on a work table, a relatively movable tool carriage, and means to move the tool carriage so that the tools are in contact with the shot shells. The shotshel... | 10/08/1991 |
| 5052076 | Seat hinge A seat back hinge for a seat on a fishing boat in which the hinge pivot has a generally circular outer pivot wall on one section of the hinge and a generally circular inner pivot wall on the other portion or section of the hinge. The inner wall is of a si... | 10/01/1991 |
| 5050724 | Roll infeed conveyor An infeed conveyor for a packaging machine holds a first squeezer conveyor having upper and lower belts spaced to receive workpiece rolls in an end to end relationship between them. The lower accelerating rollers and the upper accelerating rollers advanci... | 09/24/1991 |
| 5044058 | Bulb insertion and removal tool A tool for inserting or removing generally small Christmas tree light bulbs into or from their sockets. The tool comprising a pair of opposed levers and a fulcrum. The levers meet at one end forming the fulcrum. The ends of the levers are free at the othe... | 09/03/1991 |
| 5042618 | Liquid/gas delivery system The invention is a low volume lubricant delivery system for delivering low volumes of lubricant, entrained by gas, to workpieces and comprises essentially: a plurality of electrical conductors; a plurality of lubricant passages and a plurality of gas pass... | 08/27/1991 |
| 5038549 | Stacking packaging machine A stacking packaging machine and a process for stacking and packaging resilient workpieces. The workpieces are usually rolled paper products. The machine is comprised of an input conveyor, an elevator, cams, workpiece holders, a packaging film feeder and ... | 08/13/1991 |
| 5023927 | Structure to secure cast cup containing heating element to percolator reservoir bottom A cast cup provided with a heating element is secured to the bottom plate of a reservoir for a percolator. The cup is inserted into an opening in the bottom plate of the reservoir and has an upper flange and a lower flange. The upper flange is secured to ... | 06/11/1991 |
| 5008652 | Water leak detection apparatus for use in suspended ceilings A device for detecting leakage of liquid through a ceiling comprising at least one liquid concentrating tray having peripheral flanges for support from ceiling panel support rails and surfaces between said flanges sloping toward narrow troughs, electric c... | 04/16/1991 |
| 4989346 | Dryer for pieces of food A device for drying pieces of food comprising a series of blowers, an absorbent multi-layered conveyor belt, and a aereation bed. Two blowers providing a blast of air and a suction, respectively, that pulls the water from the outer layers of the food thro... | 02/05/1991 |
| 4988303 | Adjustable agitator assembly An adjustable agitator assembly having a hexagonal shaft to which is attached a hexagonal hub. A mounting block is attached to the hub at the desired locations. The mounting block has a receptacle to receive the splined shaft of a paddle. The splines allo... | 01/29/1991 |
| 4969864 | Venticular assist device A blood sac for a heart assist device having pump pusher plates attached to its sides and an actuator system that is pivotally attached to the plates. The actuator mechanism has a movable fulcrum and levers. The movable fulcrum allows the levers of the ac... | 11/13/1990 |
| 4964181 | Combined shower head and waterproof tape deck The combination of a shower head attachment having spaced pulsating shower heads to deliver water in pulses at spaced locations of the user's body. A waterproof radio tape player containing a pre-recorded tape of instructions for use in hydrotherapy or fo... | 10/23/1990 |
| 4961694 | Lever arm pump A pump is described including an elongated cylindrical reservoir, a valve casing, at which the pump is pivotally fixed in space, and a pump chamber which are in a linear arrangement. A piston within the pump chamber is connected to a link, the end of whic... | 10/09/1990 |
| 4930354 | Automatic bond determinator A device for testing the quality of foundry green sand is described including a delivery structure with an invertible riddle, a testing structure with a compaction plunger, and sensors for measuring the compaction and moisture content of the sample, anoth... | 06/05/1990 |
| 4909461 | Stubout bar A stubout bar having notches instead of holes for holding plastic or metal pipes.... | 03/20/1990 |
| 4901818 | Fire fighting roof ladder accessory A firefighting roof ladder accessory that is designed to be supported between two roof ladders. The accessory comprises a beam, having two foot supprot surfaces that are perpendicular to each other, and end boxes each extending over a ladder rail and prov... | 02/20/1990 |
| 4901992 | Stock stop A manual stock stop is diclosed including a track assembly and a sliding stop assembly. A cable-activated electromechanical position transducer sends an electrical signal corresponding to the position of a stop bar mounted on the top assembly to a monitor... | 02/20/1990 |
| 4901059 | Overheat warning for wood stoves A self-contained electrical warning device for attachment to a wood furnace. Includes a heat sensitive switch, a momentary test switch, a set of batteries, and an alarm. When the furnace reaches a dangerously high temperature, the heat sensitive switch is... | 02/13/1990 |
