Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
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 |
| 7780335 | Water control apparatus An embodiment for a water control apparatus is disclosed that may be used with a concrete mixing assembly. The apparatus may include flowmeter unit and a normally closed valve unit. The normally closed valve unit may be in fluid communication with, and removably con... | 08/24/2010 |
| 7766537 | Lightweight foamed concrete mixer An apparatus for on-site manufacturing of lightweight concrete used for insulation in roof decks and roof systems of building structures. The apparatus is supported on a transportable trailer frame and includes a mixer, a concrete pump, and one or more tanks for hol... | 08/03/2010 |
| 7438507 | Method and device for the transportation of pulverulent filling material through a line A method of transporting pulverulent filling material through at least one line. The method comprises opening a chamber-like line region located in the at least one line, introducing the pulverulent filling material into the chamber-like line region, closing the cha... | 10/21/2008 |
| 7337992 | Distribution assembly for particulate material An assembly for distributing particulate material comprising a blower assembly preferably removably mounted on a mobile platform and structured to generate a forced flow of air along a flow path and through a manifold assembly connected to a supply of material being... | 03/04/2008 |
| 7318483 | Fire fighting foam injection system with auto-start feature A fire fighting vehicle of the type having a system for introducing a liquid foam concentrate into a water delivery hose so that the percentage concentration of foamant in the mixture remains at a predetermined set value irrespective of variations in the water flow ... | 01/15/2008 |
| 7270469 | Apparatus and method for adding pigmentation to concrete mix A pigmentation dispenser utilizes a hopper having two rotors therein, a first rotor above a second rotor. The second rotor moves the pigmentation material through an outlet opening and deposits it on a conveyor containing a concrete mix. The concrete mix and pigment... | 09/18/2007 |
| 7267473 | Transfer system for coloring agents A system for transferring coloring agents for concrete to a ready mix truck or the like, includes a tank for receiving coloring agents. The tank includes lines for supplying it with water and a pump for transferring the coloring agents to the ready mix truck through... | 09/11/2007 |
| 7234534 | Firefighting vehicle A firefighting vehicle includes a frame, a fluid pump, and a body having a compartment. In one embodiment, a drive line of the pump passes through a transverse cross member of the frame. In another embodiment, the body includes opposite side sections sandwiching the... | 06/26/2007 |
| 7229207 | Method for gel hydration system A hydration apparatus for use with a hydration tank. The hydration apparatus disperses incoming gel into existing gel in the hydration tank to increase the hydration time of the incoming gel. The hydration apparatus includes flow conduits communicated with gel inlet... | 06/12/2007 |
| 7147361 | Methods for injecting dry bulk amendments for water and soil treatment The present invention includes methods for introducing a dry material into a fluid stream in a way that ensures a predictable, highly accurate and consistent application of the material. The invention applies variable amounts of dry material regardless of whether th... | 12/12/2006 |
| 7137579 | Distribution assembly for particulate material An assembly for distributing particulate material comprising a blower assembly preferably removably mounted on a mobile platform and structured to generate a forced flow of air along a flow path and through a manifold assembly connected to a supply of material being... | 11/21/2006 |
| 7086616 | Broadcast spreader attachment for hand-held gas or electric leaf blowers A broadcast spreader attachment for a powered leaf blower for dispensing large dry particulates. The attachment typically includes an elongate main tube having opposite intake and discharge ends. A secondary smaller tube is affixed to and in fluid communication with... | 08/08/2006 |
| 7080694 | Method and system for testing foam-water fire protection systems A test system (10) for testing a fire suppression system (100) for a determination of a flow ratio of at least two different constituents (2, 4) where the fire suppression system (100) is of a type that mixes the flow of the at least two ... | 07/25/2006 |
| 7040418 | Proppant recovery system An improved method for removing proppant from fluid used in an oil and gas well for reuse in future operations. The proppant is separated from the well fluid and transported to a materials collection tank. A crane then transports the materials collection tank onto a... | 05/09/2006 |
| 6973185 | Mobile communications device to be worn on the wrist having flexible battery strap A mobile communication device is constructed for wearing on the wrist of the user. Pivotable side panels are attached to a body and connected through a flexible band and clasp. The clasp includes a housing in which is contained the power supply of the device. The si... | 12/06/2005 |
| 6923565 | Process and equipment for producing concrete products having blended colors A process and equipment for producing multi-color concrete products, including architectural concrete blocks, concrete bricks, modular concrete products that are suitable for use in landscaping applications, such as retaining wall blocks, concrete pavers, and concre... | 08/02/2005 |
| 6860313 | Method and device for the preparation of foundry sand A device for preparing moulding sand. The device includes a mixer configured to operate under at least a partial vacuum and at least one feeder to introduce components to be mixed. An inlet in the mixer is of sufficient size to allow rapid introduction of the compon... | 03/01/2005 |
| 6780356 | Method for producing an inorganic foam structure for use as a durable acoustical panel A process and apparatus for creating an acoustically absorbent porous panel comprises the steps of dispensing cement and fibers with a dry mixer to create a dry mix and aqueous mixing water, surfactant and air with an aqueous mixer to create a foam. The process and ... | 08/24/2004 |
| 6710142 | Method of extracting gaseous fluid There is provided a method for extracting a gaseous fluid which comprises extracting the gaseous fluid through fluid extraction ports set up on the top face portion of a vertical-type agitation tank equipped inside with an agitator, wherein two fluid extraction port... | 03/23/2004 |
| 6644844 | Mobile blending apparatus The present disclosure provides a blender apparatus that can be used to prepare a slurry from carrier fluids and solids. In a preferred embodiment, the blender includes a mixing tub system, a fluids intake system, a solids intake system and a slurry deliv... | 11/11/2003 |
| 6030111 | Method of and system for recycling molding sand Molding sand of a used greensand mold is recycled by adding water and binder to sand particles fatigued by heating applied by a molten metal during molding and segregated from vigorous molding sand not directly heated by the molten metal and mixing the re... | 02/29/2000 |
| 5865534 | Materials mixer A materials mixer, suitable for mixing concrete, comprises a generally cylindrical housing (10) which houses a mixing chamber (15) consisting of an upper, dry mixing chamber portion (2), a central, wet mixing chamber portion (3) and a lower, discharge cha... | 02/02/1999 |
| 5803596 | Method and apparatus for high capacity production of finished aqueous foam with continuously adjustable proportioning An apparatus for continuous production of finished foam material, in which the proportions of the constituents are monitored and continuously adjustable during operation of the machine. The liquid components are metered by positive-displacement, progressi... | 09/08/1998 |
| 5795060 | Method and apparatus for continuous production of colloidally-mixed cement slurries and foamed cement grouts An apparatus for high capacity production of high-fluidity, colloidally mixed cement slurry. Water and cement dust are combined at metered rates by a premixing assembly which discharges into a mixing tub. The high-speed, high-shear pump recirculates the m... | 08/18/1998 |
| 5733039 | Sealing plate for sealing a rotor unit A sealing plate for a rotor unit of a spray machine to seal the rotor unit has with respect to the stator. The rotor unit has a plurality of surrounding bushings that have at both sides thereof. The spray machine includes a filling opening, a pressurized ... | 03/31/1998 |
| 5570953 | Mud-mixing machine for drywall texturing and other applications A method of forming a mixture of powdered material and water includes the step of providing a hopper, a holding tank, a tube intermediate the hopper and the holding tank, and an air-powered auger arranged to feed powdered material from the hopper through ... | 11/05/1996 |
| 5433519 | Method and apparatus for the application of mortar or concrete by spraying A method and device for the application of mortar or concrete by spraying, wherein a quick-acting binding agent mixed with an admixture is transferred to a spraying-nozzle by a pneumatic conveyor where water is added, wherein the binding agent is added mi... | 07/18/1995 |
| 5411332 | Blender with virtual baffle of particulate material A blending apparatus, inexpensive in construction and requiring a minimum of recirculation, is today essential for economical and thorough blending of particulate material, for example, plastic pellets of virgin material and of pellets that have been reco... | 05/02/1995 |
| 5407139 | Method and apparatus for dispersing and metering fibers A device for dispersing and metering fibers which includes a frame, and a hopper mounted on the frame and having an inlet opening for receiving fibers therein. A screen is provided through which the fibers from the inlet opening must pass for separating a... | 04/18/1995 |
| 5246163 | Method of applying quick setting spray materials A method of applying a quick setting spray material is disclosed, wherein a cement-containing principal composition is supplied into a feed pipe and sprayed through a nozzle and an aqueous solution of a (meth)acrylate as a set accelerating agent is suppli... | 09/21/1993 |
| 5184892 | System and method for continuous gravimetric metering, pneumatic conveying and/or mixing of pourable materials A system and method for continuous pneumatic gravimetric metering and/or mixing of pourable materials using at least one gravimetric metering apparatus incorporated in a closed loop air conveying path.... | 02/09/1993 |
| 5102228 | Apparatus and method for producing foamed materials An apparatus and method for controlling the production of foamed material in which the material and foam are delivered to a mixer (12) in predetermined relative proportions. The apparatus comprises a mixer (23) for mixing a foam solution and air together,... | 04/07/1992 |
| 5018868 | Cement storage and mixing system A dry bulk cement storage and mixing system comprises one or more generally cylindrical storage tanks or bins having somewhat wedge shaped bottom discharge sections with tapered flight conveyor screws extending across the diameter of the bin at the conver... | 05/28/1991 |
| 5009508 | Apparatus for mixing concrete An apparatus for mixing concrete which includes a tank having at least a portion thereof which permits the inside of the tank to be visually observed from the outside of the tank. An inlet is disposed in the top of the tank for inserting concrete ingredie... | 04/23/1991 |
| 4896968 | Cement storage and mixing system A dry bulk cement storage and mixing system comprises one or more generally cylindrical storage tanks or bins having somewhat wedge shaped bottom discharge sections with tapered flight conveyor screws extending across the diameter of the bin at the conver... | 01/30/1990 |
| 4895451 | Mixing device An improved mixing device is disclosed for mixing an abrasive such as sand with a flowing fluid such as compressed air. The improved mixing device comprises a body member having a major internal channel being defined along a major axis. The major internal... | 01/23/1990 |
| 4844340 | Method and apparatus for spraying an inorganic hydraulic material composition containing reinforcing short fibers An inorganic hydraulic material composition containing reinforcing short fibers is sprayed without breakage thereof, by fluidizing reinforcing short fibers in a blast of compressed air, by blending the flow of the reinforced short fibers fluidized in the ... | 07/04/1989 |
| 4815860 | Method and device for the continuous dosing of powdery substances by means of high-pressure gas Method for the continuous dosing of powdery substances, preferably synthetic silica, by means of high-pressure gas, especially by mean of compressed air, in which in a multiple, at least double line the supply of high-pressure gas is alternatingly interru... | 03/28/1989 |
| 4801210 | Method and apparatus for continuous mixing of small, precise quantities of bulk materials with a liquid stream A continuous mixer is provided for combining bulk materials metered at a relatively slow rate into a liquid stream and is particularly useful for preparing an innoculant solution for treating feed pellets, seed or the like. The mixer has a vertical separa... | 01/31/1989 |
| 4697960 | Method and apparatus for anchoring rock bolts and cables A method and apparatus for anchoring rock bolts and cables in drill holes is disclosed. The method of the invention comprises mixing a dry aggregate-cement mixture with a limited, predetermined amount of water in a water fitting and blowing the wetted cem... | 10/06/1987 |
