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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 |
| 4377060 | Wall construction A wall construction utilizing unique fastening clips to demountably secure wall panels to a suitable supporting structure, such as a stud, the fastening clips being constructed such that the outer surface of adjacent panels are maintained substantially fl... | 03/22/1983 |
| 4343491 | Snow disk for a ski stick A snow disk for a ski stick, the disk comprising a socket-shaped portion to be mounted on the stick and a rigid annular rim which is secured to the socket portion by radially directed flexible support ribs which yield so that the annular rim can pivot rel... | 08/10/1982 |
| 4331458 | Degassing system and centrifugal pump A system for degassing liquid containing mediums, particularly drilling muds which includes a suitable degassing vessel and a vertical shaft centrifugal pump for introducing the liquid medium into the degassing vessel, the pump having the capability of ha... | 05/25/1982 |
| 4330414 | Dispersible hydrophilic polymer compositions A hydrophilic polymer composition for use in thickening aqueous mediums comprising hydroxyethyl cellulose, a water miscible polar organic liquid which acts as solvating agent for the hydroxyethyl cellulose, the solvating agent being of a type which forms ... | 05/18/1982 |
| 4311004 | Gas compression system and method A system and method are disclosed for processing an oxygen-containing gas for use in a chemical process producing a generally inert gas. A fluid handling rotor is carried by a rotary shaft for effecting a pressure change in the oxygen-containing gas. A ho... | 01/19/1982 |
| 4310163 | Anti-extrusion seals and packings A sealing device comprising a main body section defining at least one sealing surface, and comprised of a flexible material a secondary anti-extrusion section adjoined to the exterior of the main body section and comprised of a material more rigid than th... | 01/12/1982 |
| 4306980 | Invert emulsion well-servicing fluids A water-in-oil well servicing fluid comprising a continuous oleaginous phase, an aqueous phase, an oleophilic anhydride and lime, and a method of preparing same.... | 12/22/1981 |
| 4301016 | Borehole drilling fluid and method An improved drilling fluid and method for drilling a borehole, the drilling fluid comprising an aqueous dispersion of an emulsion polymerized latex comprised of an interpolymer of an olefinically unsaturated carboxylic acid monomer and at least one other,... | 11/17/1981 |
| 4291623 | Binary electroexplosive device and method of assembly thereof Disclosed is a binary electroexplosive device including an explosive lead and a pyrotechnic explosive which may be selectively positioned to initiate the explosive lead upon combustion of the pyrotechnic material. The pyrotechnic material is contained in ... | 09/29/1981 |
| 4291597 | Cork extractor The invention pertains to an apparatus for extracting a cork from a bottle comprising a cork-engaging member, including a corkscrew, and a holder for aligning and guiding the corkscrew, via its own diameter, with respect to the bottle. The corkscrew itsel... | 09/29/1981 |
| 4291559 | Sheave making apparatus and method Disclosed are an apparatus and method for making a sheave by forming an external annular radial groove in the periphery of a circular workpiece. The apparatus includes a support for supporting the workpiece for rotation about its own axis. At least one gr... | 09/29/1981 |
| 4289366 | Bisexual electrical connector The invention comprises an electrical connection member including a main body and a connection formation extending generally from the main body. The connection formation includes walls extending from the main body and defining a pair of elongate, parallel... | 09/15/1981 |
| 4289354 | Borehole mining of solid mineral resources The present invention comprises a method of mining a solid substance, such as coal, minerals, or the like, from an underground deposit in one of a plurality of earth strata. Void areas are created in the deposit so as to generally define an area within th... | 09/15/1981 |
| 4288101 | Ski stick handle A handle for mounting directly on the upper end of a ski stick comprising a fitting element, a curved extension extending above the fitting element, the curved extension having a cavity space containing a buckle for longitudinally, adjustably fastening a ... | 09/08/1981 |
| 4280549 | Apparatus and process for die-casting Apparatus and method for producing a die cast article, such as a gear wheel having helical teeth, in which the die cavity is defined by fixed elements and a rotatable element. On completion of the casting the cast article can be ejected from the casting c... | 07/28/1981 |
| 4276789 | Cork extractor The invention pertains to an apparatus for extracting a cork from a bottle comprising a cork-engaging member, including a corkscrew, and a holder for aligning and guiding the corkscrew, via its own diameter, with respect to the bottle. The cork-engaging m... | 07/07/1981 |
| 4275867 | Valve assembly and method A disc-type valve assembly and method of making same. The assembly includes a valve body having a flowway with a disc-like valve element therein. A shaft has an inner portion directly rigidly connected to the valve element by a pre-stressed self-connectio... | 06/30/1981 |
| 4275678 | Coupling apparatus for articulated bodies A marine push towing combination having a first vessel with a notch at one end, a second vessel having a bow portion and sides, and a coupling apparatus for coupling the vessels together, the coupling apparatus including a first coupling assembly having a... | 06/30/1981 |
| 4275592 | Extractor tool and holder Disclosed is a holder which may be used for mounting equipment, such as sensing apparatus, within an otherwise closed environment, and an extractor tool for inserting and retrieving the holder and attached equipment. In an operating configuration the hold... | 06/30/1981 |
| 4273390 | Bearing system with thrust compensation means The present invention pertains to a thrust bearing system including a thrust bearing structure having at least one pair of opposed bearing faces defining a bearing space therebetween, and a sub-system for delivering lubricant to the bearing space. A load ... | 06/16/1981 |
| 4271563 | Shellfish extraction tool A shellfish meat extraction tool having an elongated body portion which is manually grasped by the user, a connecting portion extending from one end of said body portion, and a unique meat extraction blade formed at the outermost extremity of said connect... | 06/09/1981 |
| 4270241 | Process for slaughtering of animals by bleeding A method for the slaughtering of animals by bleeding in which the animal is first stunned, the method comprising making an incision in said animal to expose the anterior wall of the thorax of the animal, inserting a cannulating device through said incisio... | 06/02/1981 |
| 4269279 | Spheroidal plastic coated magnetizable particles and their use in drilling fluids Plastic coated magnetic particles in bead form are used in drilling fluids to increase the lubricity thereof as indicated by a decrease in the drilling torque or the power required to rotate the drill string. Also provided is a method of recovering the be... | 05/26/1981 |
| 4268967 | Package sizer A package sizer comprising a first pair of walls defining a first pair of generally opposed, substantially parallel, planar surfaces. A second pair of walls connected to the first pair defines a second pair of generally opposed, substantially parallel, pl... | 05/26/1981 |
| 4267675 | Well working rig Disclosed is a rig for working on wells, and including a generally two-legged mast, with each leg constructed with a traveling pole telescoping about and along a gin pole. The mast may be so extended by means of a chain drive mounted on the traveling legs... | 05/19/1981 |
| 4263237 | Method of making expandable member for forming seals and applying force An expandable member is disclosed that includes a molded body of elastomeric material with a core embedded therein. At least a portion of the core is not bonded to the body. A fluid conduit is provided through which fluid can be injected between the core ... | 04/21/1981 |
| 4261582 | Rotary mechanical shaft seal assembly A mechanical seal assembly for sealing between a rotating shaft and a housing wall through which it passes with the mutually engageable rotating and stationary sealing surfaces being located in a radial plane with respect to the axis of the rotating shaft... | 04/14/1981 |
| 4258791 | Thermal insulation method A method of insulating a well bore with a pumpable, oil base packer fluid which gels to a thick grease-like consistency at elevated temperatures, the packer fluid comprising a liquid oleaginous phase, an aqueous phase, an oleophilic polymer such as a copo... | 03/31/1981 |
| 4253351 | Cork extractor Apparatus for extracting a cork from a bottle comprising a corkscrew rotatably mounted on a carrier, the carrier in turn being mounted for longitudinal reciprocation on a frame. The apparatus further includes a control nut having a screw passage positione... | 03/03/1981 |
| 4252760 | Method and apparatus for manufacturing articles by pressing and sintering The invention pertains to the manufacture of articles of thermosetting plastics and other materials. In a first stage, a solid article is formed from a particulate material by introducing such material into a first chamber defined partially by the backing... | 02/24/1981 |
| 4252146 | Bypass valve assembly and system A valve assembly comprises a valve body having a hollow and a valve element longitudinally movable between first and second positions therein. The valve assembly has at least one inlet and at least one outlet in pressure communicating relation to the holl... | 02/24/1981 |
| 4250324 | Water-degradable esters and process for the preparation thereof Water-degradable compounds formed from amine-type compounds, aldehydes and aromatic carboxylic acids, the respective components reacting to form a complex ester which upon contact with water slowly degrades to release, at least, the original carboxylic ac... | 02/10/1981 |
| 4246664 | Plumbing system and plumbing fittings for use therein Plumbing systems for routing wastes from a plurality of plumbing fixtures to a sewer, and for venting gases from the plumbing fixtures to the atmosphere. Also, plumbing fittings for use in such plumbing systems.... | 01/27/1981 |
| 4245228 | Laser plotter Disclosed is a plotter for recording information on a light sensitive medium by modulating a laser beam incident on the medium. Data is processed into digital light modulation signals, and corresponding control signals deflect the modulated light beam to ... | 01/13/1981 |
| 4244590 | Inflatable packer construction An inflatable packer which can be easily constructed using tubular members such as a section of well casing, the packer having spaced, first and second annular heads which surround a central tubular member, the first head being slidable along the tubular ... | 01/13/1981 |
| 4242870 | Power systems using heat from hot liquid The present invention relates to power systems and more particularly to systems in which hot water from a natural well or spring is used to vaporize a working fluid which is then expanded to produce mechanical energy. Improved working fluids are used whic... | 01/06/1981 |
| 4242040 | Thrust adjusting means for nozzle clamp ring The invention comprises a rotary fluid handling apparatus having first and second coaxial bodies mounted for relative axial movement therebetween and having respective opposed radially facing annular surfaces. The bodies may be, for example, the stator of... | 12/30/1980 |
| 4233980 | Hemostatic compressive device Disclosed is an inflatable bladder and a pressure plate which may be selectively positioned to hold the bladder so as to apply pressure to a blood vessel, for example. The bladder includes two sheets of flexible, non-elastic material. Expansion of the bla... | 11/18/1980 |
| 4231148 | Elevator erection method The present invention comprises a method of erecting an elevator system for a building comprising fabricating an elongate elevator shaft framework section, and mounting the framework section in an upright position at the building site. After construction ... | 11/04/1980 |
| 4229907 | Slide gate Disclosed is a lost motion coupling for connecting a propulsion device with a load to be moved. The coupling permits the propulsion device to generate significant momentum before applying driving force to the load. In the embodiment described, a traveling... | 10/28/1980 |
