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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4443181 | Draft control system A draft control system for furnaces comprises an auxiliary channel in communication both with ambient air and the flue of the furnace, a main draft control means for regulating the entrance of ambient, auxiliary draft air into the flue, and auxiliary draf... | 04/17/1984 |
| 4429693 | Surgical fluid evacuator A flexible, compressible reservoir draws a substantially constant vacuum to permit uniform removal of fluid from a surgical incision through a wound drain catheter. The reservoir includes a compression spring interposed between a pair of congruent articul... | 02/07/1984 |
| 4419095 | Cannula with radiopaque tip A cannula for insertion into a body cavity, duct, or vessel of a patient includes a parent cannula member and an integral radiopaque tip. The tip is configured so as to be distinguishable from internal body parts in an X ray or flouroscopic image, thus se... | 12/06/1983 |
| 4389635 | Interfacing attachment for remote mechanical fire alarms An attachment which converts a single station, spring powered, temperature sensitive, fire alarm protection device into a remote signalling heat detector for a central fire alarm system, without affecting the internal apparatus of the alarm device or the ... | 06/21/1983 |
| 4389090 | Fiber optic polarization controller Fiber optic device for controlling the state of polarization of light. In one embodiment, a strand of fiber optic material is bent into a generally planar coil of relatively tight radius to stress the material and form a birefringent medium having princip... | 06/21/1983 |
| 4387709 | Knee brace A device for immobilizing the knee of an individual is an open-ended, tubular shell formed of an integral piece of semi-rigid material having portions shaped to receive the lower thigh, knee, and upper calf of the individual. The device is easily slipped ... | 06/14/1983 |
| 4386636 | Container conveyor for flexible container filling machine Apparatus for advancing flexible containers that are connected together seriatim in a continuous row, automatically, to a filling and capping station by preliminarily moving the filling spout of each container to a position adjacent the filling nozzle dur... | 06/07/1983 |
| 4386344 | Electronic edge and center locator and method of using same An electronic edge and center locator is a device for setting up a machine tool so that a tool holding chuck is aligned with a workpiece to be machined. The electronic edge and center locator has a metal probe for contacting a workpiece and the probe has ... | 05/31/1983 |
| 4382439 | Thumb spica A device for immobilizing the thumb, hand and wrist of an individual is a shell formed of an integral piece of semi-rigid material having portions shaped to receive the upper forearm, hand and thumb. The device is easily slipped on and off by means of exp... | 05/10/1983 |
| 4376927 | Printed circuit fuse assembly A circuit fuse assembly comprising a plurality of fuse elements which are simultaneously formed using printed circuit or through hole plating techniques and including means for easily substituting a different one of the plural fuse elements when the in-ci... | 03/15/1983 |
| 4375864 | Container for holding and dispensing fluid A container for holding and dispensing fluid has a flexible bag to which a spout is connected. A specially designed adapter within the spout has an opening sealed by a plug. A tubular probe is inserted into the adapter opening and snapped onto the plug. T... | 03/08/1983 |
| 4372921 | Sterilized storage container A container lid (12) is held open by a support plate (18) carrying a chamber (20) which expands at a predetermined point in a sterilizing cycle to react against the lid, moving the plate outwardly to permit the lid to drop onto the container base. A resil... | 02/08/1983 |
| 4372452 | Transfer hoist for disabled persons A lightweight hoist for use in living quarters or patient care facilities to transport disabled persons from one location to another. A flat, unitary, easily manufactured mounting plate provides a main frame that permits the hoist to be easily and inexpen... | 02/08/1983 |
| 4355493 | Roller chute A roller chute apparatus for packaging a flexible plastic bag filled with liquid in a box has four stacks of rotatably supported vertically spaced rollers. The four stacks extend a substantial depth into the box around the inside of the box sidewalls form... | 10/26/1982 |
| 4355974 | Wafer boat A wafer processing boat is provided with parallel slots that support each wafer at a slight angle with respect to vertical so that the wafers lean by gravity in a uniform manner and are thereby arranged in spaced parallel relationship. This enables the to... | 10/26/1982 |
| 4353020 | Impact printer programmed servo system A positioning control servo uses a digital feedback control system and an analog feedback control system, both simultaneously generating control signals to a servo summing node. The digital system derives negative feedback from velocity values which are r... | 10/05/1982 |
| 4352663 | Method and apparatus for setting a dental articulator A protractor-comparator type tool is used to determine characteristics of a recorded path of a patient's jaw movement for purposes of setting a dental articulator.... | 10/05/1982 |
| 4352662 | Dental articulator frames and method of making The frames and guide blocks for a dental articulator are precisely machined in three dimensions to guarantee interchangeability with other frames and guide blocks and accuracy of articulator movement with respect to dental casts mounted thereon. Test bloc... | 10/05/1982 |
| 4351536 | Ice skate attachment An ice skating attachment can be interchangeably attached to conventional roller skate foot plates so that a foot receiving device on which such a foot plate is mounted can serve both as a roller skate or as an ice skate. The ice skating blade of the atta... | 09/28/1982 |
| 4351127 | Ocean bottom sampler A sampling device for measuring the quantity and distribution of young fish life very close to the ocean floor, having a pair of large wheels and a set of small rollers to enable the sampler to traverse rough ocean bottom terrain.... | 09/28/1982 |
| 4350133 | Cold start characteristics of ethanol as an automobile fuel An alcohol fuel burner and decomposer in which one stream of fuel is preheated by passing it through an electrically heated conduit to vaporize the fuel, the fuel vapor is mixed with air, the air-fuel mixture is ignited and combusted, and the combustion g... | 09/21/1982 |
| 4350232 | Mechanical shock arrestor Relative axial motion of a pair of strut members is converted into rotation of a shaft which drives a rotatably mounted inertia element. Rotation of the shaft in the opposite direction drives a second rotatably mounted inertia element. The inertia element... | 09/21/1982 |
| 4348032 | Head gasket having resilient seal with Belleville springs A pair of closed loop spring elements such as Belleville washers stacked in opposing relation within a resilient U-shaped jacket so that the jacket legs are spread by the spring elements to form sealing surfaces when compressed between two members such as... | 09/07/1982 |
| 4347461 | Incident illumination responsive light control A circuit for controlling the power supplied to a lamp includes a sensor, located at the lamp, which measures the portion of the lamp's output which is reflected from an illuminated area. This sensor is connected to a sensing circuit which measures the re... | 08/31/1982 |
| 4346426 | Magnetic tape de-gausser and method of erasing magnetic recording tape A magnetic tape de-gausser includes a pair of electromagnets which are arranged to project a magnetic field through a magnetic tape reel to magnetically erase the magnetic tape. The electromagnets are mounted to be movable so as to tightly accomodate vari... | 08/24/1982 |
| 4344242 | Machine for manufacture of panel file A machine for the manufacture of a panel file for the storage of flat, flexible data elements is herein disclosed. A sheet of flexible resilient material is unrolled from an arbor. The material is cut into strips and rolled onto reels. The strips are subs... | 08/17/1982 |
| 4344377 | Sail craft A device for increasing the motive force of a sail acting on a sail craft and at the same time decrease the risk of having the craft turned bottom up after a capsizing are obtained by fastening to the uppermost portion of the sail (3) a certain amount of ... | 08/17/1982 |
| 4343314 | Non-invasive real time blood pressure measurement system A non-invasive, real time blood pressure measurement system includes a cuff connected to a pump, a cuff pressure sensor, and a detector to sense the times when the cuff stops or starts blood flow in a user's body appendage. The pump cyclically varies the ... | 08/10/1982 |
| 4343049 | Electro-chemically machined ring and strut structure for prosthetic heart valves This invention relates to the electrochemical machining of integrally formed prosthetic heart valve structures in which both the structural integrity of the valve and the blood flow through the valve is improved as a result of the integral formation of th... | 08/10/1982 |
| 4342566 | Solid phase anti-C3 assay for detection of immune complexes A solid phase assay which specifically detects C-fixing ICs by reacting ICs or aggregated gammaglobulin in normal serum with matrix-bound F(ab')2 anti-C3 and measuring the amount of Ig by radioimmunoassay or enzyme-linking techniques, and means for carryi... | 08/03/1982 |
| 4342324 | Dental flossing finger A dental flossing holder and applicator is disclosed which is held in the user's hand and anchors one end of the floss, the free end of the floss being held and manipulated by the user's other hand.... | 08/03/1982 |
| 4342977 | Printed circuit fuse assembly A circuit fuse assembly comprising a plurality of fuse elements which are simultaneously formed using printed circuit or through hole plating techniques and including means for easily substituting a different one of the plural fuse elements when the in-ci... | 08/03/1982 |
| 4341528 | Simple, non-chromatographic, highly specific method for the determination of urinary vanilmandelic acid The Habbal reaction as a simple spectrophotometric method for the determination of urinary vanilmandelic acid (VMA) is presented. The Habbal reaction is based on the diazo reaction, the specificity of which is maximally increased by citrate buffer extract... | 07/27/1982 |
| 4341929 | Memory accessing system Data stored in an electronic memory is accessed by search electronics which permit identification and access to a selected memory location in response to a serial search character input. As each search character is input to the system, a search is made th... | 07/27/1982 |
| 4340106 | Strip door hanging system The individual strips of a plastic strip door hang by clips having a downwardly facing U-shaped portion which snap within an upwardly facing U-shaped portion on a support member so that strips may be easily installed and replaced.... | 07/20/1982 |
| 4336678 | I-Beam truss structure A wooden truss structure comprises upper and lower chords, each of which is grooved on the side facing the opposite chord. A web member formed of sheet material, such as plywood, interconnects the chords and fits within the chord grooves. At the web/groov... | 06/29/1982 |
| 4335543 | Method and means of manufacturing an improved disc reel mower A continuous abrading belt means and method for manufacturing an improved mowing machine of the type which includes a bed knife, a cylindrical rotary knife which, in turn, comprises a plurality of generally elliptical discs mounted parallel to each other ... | 06/22/1982 |
| 4334350 | Method utilizing a porous vitreous carbon body particularly for fluid heating A method for the heating of a fluid stream flowing in the pores of a body of specially prepared porous reticulated vitreous carbon which does not crack or substantially change in electrical resistance with time when heated to elevated temperature in air i... | 06/15/1982 |
| 4334873 | Iceberg propulsion system A tabular iceberg is used as an energy source for a propulsion system which propels the iceberg across vast distances of the ocean with minimal fuel consumption. The iceberg thus becomes, in effect, a self-propelled vessel in which potential energy associ... | 06/15/1982 |
| 4333580 | Mechanism for locking two halves of an underground vault An underground vault formed of two housing sections, each section having an open end bordered by an outwardly projecting annular flange, the flanges being of like diameter to permit their mutual abutment when the two sections are placed together to form a... | 06/08/1982 |
