Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4211739 | Foam extrusion apparatus and method A foam extrusion apparatus and method employs tandem extruders mounted on horizontal rails for movement toward and away from the end of a vacuum chamber which is in the form of an elongated inclined barometric leg. The upper end of the chamber is closed b... | 07/08/1980 |
| 4211523 | Gas-flow control apparatus for equipment for producing foamed plastic Gas-flow control apparatus for delivering a constant volumetric flow of gas to an extruder through which a molten thermoplastic resin is being processed. The gas-flow control apparatus consists of a compressor having an intake and a discharge and is opera... | 07/08/1980 |
| 4201321 | Applicator device for flowable reaction masses Applicator device for flowable reaction masses includes a crossbeam for distributing reaction mass and lines for feeding the reaction mass to the crossbeam, the crossbeam being formed with an inner hollow chamber communicating with the feeding lines for r... | 05/06/1980 |
| 4188355 | Manufacture of fibrous webs Bonded non-woven mineral fibre mat is made by a process including the steps of forming a foam from an aqueous solution or suspension of a binder, impregnating a non-woven mat with the foam and then selectively removing a major portion of the water from th... | 02/12/1980 |
| 4178144 | Molding conveyor drive In a molding apparatus employing opposed endless belt conveyors to mold a non-rigid material into a rigid material, the problem of one conveyor being driven at a slightly greater speed than the other conveyor to produce harmful shear stresses within the m... | 12/11/1979 |
| 4155965 | Continuous submerged foaming of thermoplastic resin Continuous method and apparatus for treatment of a solid material submerged in a body of liquid wherein the material is sticky and/or has weak tensile strength. The material is supported, while it is so submerged, by a dynamic layer of the liquid lying be... | 05/22/1979 |
| 4149840 | Apparatus for producing rigid foam plastic insulating panels An apparatus is disclosed for making foam plastic insulating panels. The apparatus has a lower conveyor band forming a support surface and a first continuous form belt on the support surface and an upper conveyor band forming a limiting surface and a seco... | 04/17/1979 |
| 4134945 | Method and apparatus for making foam An improvement in the manufacture of flexible densified polyurethane foam wherein the partially cured freely risen foam is fed through a crush conveyor to minimize the density gradient throughout the vertical cross section. The crush conveyor includes an ... | 01/16/1979 |
| 4128611 | Continuous process and apparatus for producing foamed polymer bunstock having a substantially rectangular cross-section A process and apparatus are described for the preparation of continuous polymer foam bunstock having substantially rectangular cross-section. The novel feature comprises a panel member having its downstream end pivotally mounted above a conventional movin... | 12/05/1978 |
| 4124336 | Poppet check valve for controlled feeding of blowing agent A poppet type check valve for controlled feeding of blowing agent into an assembly for the extrusion of thermoplastic polymeric foam material and, in particular, for controlled feeding of a blowing agent such as pentane into the barrel of an extruder asse... | 11/07/1978 |
| 4099897 | Apparatus for producing foamed plastic insulated wires An extrusion apparatus and method for producing foamed resin coatings on a wire. A foaming agent and molten resin are poured into a supply portion of an extruding screw and cylinder apparatus. The screw in the supply portion is tapered in the down stream ... | 07/11/1978 |
| 4093109 | Expansible trough apparatus for use in producing polyurethane foam Disclosed herein is a trough and fall plate particularly adapted for use in producing continuous buns of polyurethane foam which trough and plate are expansible relative to the transverse axis of the plate for forming buns of variable widths. The trough i... | 06/06/1978 |
| 4087296 | Method for applying membrane-covered rigid foam to building surface An apparatus for in situ preparing and applying foam to a surface, such as a roof, and at the same time applying a membrane onto the surface of the foam, produces a foam-membrane sandwich having an upper surface of controlled smoothness and thickness or p... | 05/02/1978 |
| 4080125 | Device for the stepless manufacture of expanded cellular material blocks with a circular cross-section An apparatus for the manufacture of blocks of expanded cellular material having an essentially circular cross section from foamable means which comprises a stationary generally U-shaped mold having two sides, a bottom and an open top and forming an elonga... | 03/21/1978 |
| 4077755 | Apparatus for continuously preparing a syrup of a monomer-polymer mixture A continuous mixing method and system for preparation of syrup employed as a starting material for continuously manufacturing plate products therefrom are disclosed. The syrup is prepared by a method in which at least one additive is incorporated into at ... | 03/07/1978 |
| 4069285 | Method and apparatus for making flat top buns A method and apparatus for making flat topped foamed buns (e.g. polyurethane) in a continuous foaming process. The method comprises the guiding of a continuous thin film tubular member through gathering devices adjacent the cream line at each side of a co... | 01/17/1978 |
| 4067672 | Apparatus for producing a body of porous thermoplastic material The invention relates to an apparatus for continuous production of a strand of porous thermoplastic material from preferably pre-expanded granules of said material containing an expanding agent. The apparatus comprises an elongated rectangular channel, tw... | 01/10/1978 |
| 4060579 | Method for the continuous forming of foam blocks Foam blocks are continuously produced on a conveyor belt having lateral boundaries, the application zone for the mixture being adjustable in its inclination, and a feed means for the cover sheet of the conveyor belt being provided before the point at whic... | 11/29/1977 |
| 4059466 | Hot melt thermoplastic adhesive foam system A novel method and apparatus are disclosed for manufacturing a novel adhesive product. The product is a pair of substrates adhered together by compressed hot melt adhesive foam. The foam is created by first mixing a chemical blowing agent, such as powdere... | 11/22/1977 |
| 4044084 | Method of removing an article from a chamber having a reduced pressure therein A method of removing an article from a chamber having a reduced pressure therein by connecting the chamber to a pool of liquid by a barometric leg is disclosed. The method provides a conveyor in said barometric leg and allows said article to float up into... | 08/23/1977 |
| 4039691 | Protein texturization by extrusion with internal steam injection A bland protein product having a texture and mouth feel simulating animal meat is prepared by forming a dough-like mixture of protein material and water, and extruding a continuous tubular shell of the protein dough, while simultaneously injecting steam i... | 08/02/1977 |
| 4017290 | Method and apparatus for making uniform pellets for fusion reactors A method and apparatus for making uniform pellets for laser driven fusion reactors which comprises selection of a quantity of glass frit which has been accurately classified as to size within a few micrometers and contains an occluded material, such as ur... | 04/12/1977 |
| 4012188 | Pressure forming apparatus An apparatus and method are provided for continuously forming a plastic material, such as a thermoplastic polymer, under pressure against a drum containing irregular surface formations or cavities therein. In one form, injected plastic material is compres... | 03/15/1977 |
| 3981649 | Apparatus for producing a foamed thermoplastic resin article An apparatus for producing a foamed thermoplastic resin comprising an extruder including a barrel through which a thermoplastic resin is fed while being melted and a head to extrude said molten resin from said barrel, and gas injector means to inject a ga... | 09/21/1976 |
| 3971838 | Process for continuously producing shaped articles of polystyrene foam Flat plate-type, rod-type or shaped articles of polystyrene foam are continuously produced from preliminarily expanded beads of polystyrene or a mixture of said preliminarily expanded beads with foamed polystyrene pieces recovered for reuse as raw materia... | 07/27/1976 |
| 3966373 | Apparatus for the continuous extrusion of small cross-section thermoplastic foam profiles Thermoplastic polymers containing a blowing agent are extruded into an unconfined zone and allowed to partially expand. The polymers are then conveyed through a confined moving passage of predetermined configuration formed, for example, by intermeshing co... | 06/29/1976 |
| 3957413 | Apparatus for producing high-speed production of a pressure generating product The herein described Apparatus and Method of Producing High-speed Production of a Pressure Generating Product consists of one or more main conveyor units that may be connected together to form a continuous production line, and in which each conveyor unit ... | 05/18/1976 |
| 3954544 | Foam applying apparatus An apparatus for in situ preparing and applying foam to a surface, such as a roof, and at the same time applying a membrane onto the surface of the foam, produces a foam-membrane sandwich having an upper surface of controlled smoothness and thickness or p... | 05/04/1976 |
| 3942921 | Die and air nozzle An apparatus for use as an extruder die is disclosed. The die comprises a cylindrical housing surrounded by heating means. Within the die is provided gas injection means which can be used to expand the hot extrudate.... | 03/09/1976 |
