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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 |
| 4836440 | Sift-proof carton and method of manufacture A four-sided, sift-proof carton and method of sealing the end flaps of same includes two minor flaps and an inner and outer major flap at the top and bottom of the carton. The inner and outer major flaps are each formed with a width less than the depth of... | 06/06/1989 |
| 4821922 | Thermoplastic melting apparatus with a level indicator A thermoplastic melting apparatus comprises a tank pivotally mounted upon bearings within the interior of a housing having a top cover. A load cell is mounted beneath the tank opposite the bearings which is effective to sense pivotal movement of the tank ... | 04/18/1989 |
| 4819879 | Particle spray gun An electrostatic particle spray gun having, in one preferred embodiment, a conical deflector of insulative material mounted in the nozzle in the particle path for forming a conical particle spray pattern. A resistive sheet connected to a high voltage elec... | 04/11/1989 |
| 4815660 | Method and apparatus for spraying hot melt adhesive elongated fibers in spiral patterns by two or more side-by-side spray devices An apparatus for spraying heated hot melt adhesive in a relatively wide spray pattern comprises a manifold and at least two spray guns mounted side-by-side to the manifold. Each spray gun includes a nozzle having an adhesive discharge passageway which eje... | 03/28/1989 |
| 4800102 | Powder spraying or scattering apparatus and method Apparatus and method for spraying or scattering solid particulate powders onto a substrate includes powder spraying or scattering means, conveyor for supporting and conveying the substrate and rotatable disc member disposed between the spraying or scatter... | 01/24/1989 |
| 4785996 | Adhesive spray gun and nozzle attachment An apparatus for spraying heated hot melt adhesive in elongated strands or fibers in a controlled, spiral pattern upon a substrate comprises a spray gun having a nozzle formed with an adhesive delivery passageway and an air delivery passageway both of whi... | 11/22/1988 |
| 4784331 | Electrostatic spray gun device and cable assembly An electrostatic spray device and cable assembly for charging coating material applied to an article in industrial finishing operations includes a gun body having a powder flow passageway and a dielectric sleeve contained within the passageway such that t... | 11/15/1988 |
| 4780331 | Method and apparatus for induction charging of powder by contact electrification Method and apparatus for charging powdered particles and delivering only these charged particles to a workpiece. A high voltage electric field is created between upper and lower surfaces. Powder is continuously delivered to the lower surface. The lower su... | 10/25/1988 |
| 4779762 | Method and apparatus for controlling the gas content of dispensed hot melt thermoplastic adhesive foam A method and apparatus for controlling the gas content of dispensed hot melt thermoplastic adhesive foam. Air or another relatively inert gas is mixed with molten thermoplastic adhesive, and the mixture is pressurized to form a gas and molten adhesive "so... | 10/25/1988 |
| 4778631 | Method and apparatus for foaming high viscosity polymer materials Polymer materials having viscosities ranging from about 50,000 up to above 1,000,000 centipoises are mixed with a gaseous foaming agent to provide a polymer/gas solution under pressure such that when the polymer/gas solution is subsequently dispensed at a... | 10/18/1988 |
| 4770344 | Powder spraying system A power spray system for applying particulate powder material to a substrate includes a volumetric or gravimetric dry material feeding device having an outlet connected to a manifold formed with an internal cavity and a plurality of passageways communicat... | 09/13/1988 |
| 4753819 | Method for applying a moistureproof insulator coating on packaged circuit boards A method of applying coating material to only selected areas of a packaged printed circuit board wherein the coating material is supplied to a flat-pattern nozzle at a pressure sufficient to produce a liquid film emission in a flat leaf-shaped pattern whi... | 06/28/1988 |
| 4739935 | Flexible voltage cable for electrostatic spray gun An electrostatic spray system including a spray device having an electrode for electrostatically charging coating particles emitted from the spray device toward an article to be coated, a high voltage electrostatic supply, and a high voltage insulated ele... | 04/26/1988 |
| 4735169 | Adhesive applicator assembly An applicator assembly for applying hot melt adhesive to a substrate such as the end flaps of a sift-proof carton includes slot nozzles employing elongated, wear-resistant doctor blades formed with a fluid discharge slot. The doctor blades, preferably in ... | 04/05/1988 |
| 4734188 | Filter for hot melt adhesive A filter for hot melt adhesive is carried within a passageway in a manifold and is rotatable therein between a filtering position in which hot melt adhesive is directed to the inner core of the filter at one end thereof, and a backflushing position in whi... | 03/29/1988 |
| 4730647 | Powder feeder apparatus A powder feeder for supplying particulate powder material to powder applicators mounted in a powder spray booth comprises a housing having an inlet connected to the powder recovery system of the powder spray booth, and an outlet. A fluidizing plate and pu... | 03/15/1988 |
| 4723505 | Powder booth A powder spray booth including a tunnel through which product is conveyed to spray guns mounted adjacent the tunnel to spray charged particles into the tunnel and a fan and final filters located below the tunnel. A powder collector consisting of cartridge... | 02/09/1988 |
| 4716520 | Method of checking channel connections and detecting heater circuit and temperature sensor malfunctions in multi-channel closed loop hot melt heating systems A method of checking to determine (a) whether the heating elements and temperature sensors of the various components of a hot melt heating and dipensing system, such as, hot melt dispensers, hoses, and associated reservoir and manifold, are connected in p... | 12/29/1987 |
| 4716519 | Method of checking channel connections and detecting heater circuit and temperature sensor malfunctions in multi-channel closed loop hot melt heating systems A method of checking to determine (a) whether the heating elements and temperature sensors of the various components of a hot melt heating and dispensing system, such as, hot melt dispensers, hoses, and associated reservoir and manifold, are connected in ... | 12/29/1987 |
| 4715535 | Powder spray gun A powder spray gun for applying particulate powder material onto a surface includes a gun body having a venturi transfer pump which receives air-entrained particulate powder material from a supply conduit and distributes the powder for discharge into a di... | 12/29/1987 |
| 4687137 | Continuous/intermittent adhesive dispensing apparatus An adhesive dispensing apparatus for applying continuous, parallel adhesive beads onto the center portion of a substrate and intermittent, parallel adhesive beads on the outer portions of a substrate, particularly the plastic backing sheet of a disposable... | 08/18/1987 |
| 4682710 | Multi-station viscous liquid distribution system A system for dispensing multiple discrete streams of a high viscosity liquid material, and particularly, systems such as those for applying sealants to the seams of an automobile body on a production line. The system is provided with a multi-speed pump fo... | 07/28/1987 |
| 4682711 | Method and apparatus for sealing welded seams of automobiles A system for applying sealant material to the welded seams of an automobile body including a reciprocating piston pump for supplying the material under pressure from a reservoir to an overhead distribution manifold. From the manifold the material is suppl... | 07/28/1987 |
| 4679710 | Hot melt foam adhesive system A hot melt foam adhesive system including a gear pump wherein gas is mixed under pressure into the molten adhesive and is driven into solution with the adhesive. The gas is supplied to the pump via a one-way check valve operative to prevent the back flow ... | 07/14/1987 |
| 4679711 | Multi-orifice zero cavity nozzle dispenser A valved device for dispensing multiple closely spaced streams of liquid from a plurality of dispensing orifices. The device includes selectively actuatable valve needles associated with each of the dispensing orifices for controlling liquid flow from the... | 07/14/1987 |
| 4675203 | System for detecting fire in a powder spray booth A system for detecting fire in a powder spray booth having a spray gun for depositing powder onto products moving through the booth includes a switch mounted to the spray gun which is operatively connected to a control system which operates the booth and ... | 06/23/1987 |
| 4675209 | Process and device for the application of a high-active absorber on a substrate A method for the application of highly absorbent material onto a moving substrate includes the steps of dispensing a melt adhesive film onto precisely defined areas of the substrate, covering such areas with the absorbent material and then removing excess... | 06/23/1987 |
| 4667879 | Thermoplastic material applicator having an adjustable slot nozzle A valved flow control dispenser including a slot nozzle through which molten thermoplastic material is dispensed onto a substrate. The slot nozzle includes a nozzle body within which there is a transverse cylindrical bore, which bore is intersected by two... | 05/26/1987 |
| 4668948 | Dispenser malfunction detector A dispenser for fluid under pressure has a sensor affixed to it to sense the pressure of the fluid proximate the dispenser discharge opening to generate a pressure reflective signal. A comparator is connected to receive the pressure reflective signal to c... | 05/26/1987 |
| 4667850 | Thermoplastic grid melter Apparatus for melting and dispensing thermoplastic material including a hopper for receiving solid thermoplastic material, a flow-through grid melter secured to the bottom of the hopper and a heated reservoir mounted beneath the grid melter. The reservoir... | 05/26/1987 |
| 4666066 | Thermoplastic grid melter Apparatus for melting and dispensing thermoplastic material including a hopper for receiving solid thermoplastic material, a flow-through grid melter secured to the bottom of the hopper and a reservoir mounted beneath the grid melter. A pump is mounted in... | 05/19/1987 |
| 4663195 | Continuous coating process for discrete articles Spaced apart, hollow, can bodies are formed around a stubhorn and moved past a spray nozzle for spray coating the inside seams of the can bodies. Each can body is received from a conveyor and moved past the spray nozzle at a sufficiently reduced speed to ... | 05/05/1987 |
| 4662309 | Portable powder spray booth A self-contained, compact and portable powder spray booth and powder recovery system includes a base unit, and a separate booth removably mounted upon the base unit which can be easily customized to accommodate articles of varying shape and size without c... | 05/05/1987 |
| 4661688 | Bulk melter platen assembly Apparatus for melting and pumping molten liquid material from a drum of material which is solid at room temperature and which includes a platen assembly having a top platen and a lower heating platen suspended from the top platen but movable vertically re... | 04/28/1987 |
| 4657047 | Modular color changers with improved valves and manifolds Modular circulating and dead end color changers are made from synthetic materials inert to chlorinated hydrocarbon solvents. Universal supply and return manifolds have relatively smooth and uninterrupted walls defined, in part, by inlet and return valve s... | 04/14/1987 |
| 4656816 | Skin packaging machine with inclined oven A skin packaging machine have a base, an inclined oven above the base, and a film frame pivoted to swing between the base and the inclined oven. The oven has transverse elongated heating elements closely spaced at the lower end and widely spaced at the up... | 04/14/1987 |
| 4645151 | Cable and connection apparatus for electrostatic powder guns An improved control cable terminal for an electrostatic spraying gun includes a magnetically operated reed switch and an insulating body encapsulating both the switch and control wires at the gun end of the control cable. The body defines a switch plug in... | 02/24/1987 |
| 4644134 | Electrically heated hose having corrugated plastic cover A flexible electrically heated hose of substantially uniform construction throughout its length for transmitting hot liquid material includes a flexible polymeric tube encased within a braided metal covering and having hydraulic fitting at its opposite en... | 02/17/1987 |
| 4640310 | Variable air-piloted air regulator system An air regulator system using air-piloted valves for controlling a plurality of different air flows in a powder spray system. A control regulator is used to set the flow rates of a plurality of flow regulators, each of which is associated with a particula... | 02/03/1987 |
| 4639611 | Bridge circuit system A sensing circuit system including circuitry for sensing impedance variations of a variable impedance element. As disclosed, a bridge circuit system includes a bridge circuit to which the variable impedance element is couplable. The bridge circuit system ... | 01/27/1987 |
