Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 8141318 | Metal roof truss having generally S-shaped web members The metal truss assembly disclosed herein is made from generally U-shaped metal chords and multiple generally S-shaped web members extending between the chords. A typical truss assembly has a pair of elongated, opposed, diverging metal upper chords and a lower chord... | 03/27/2012 |
| 8020515 | Fish habitat A fish habitat which provides a habitat for fish to congregate consisting of individual strands of a buoyant material, such as polyethylene, secured to a body for installation on the bed of a body of water. ... | 09/20/2011 |
| 7963505 | Self-contained self-elevating platform lift In one embodiment, a self-elevating platform lift for moving objects between a first level and a vertically-elevated second level is provided. The platform lift comprises: (A) a platform for supporting the objects; (B) a plurality of lift lines for connection at the... | 06/21/2011 |
| 7117941 | Variable diameter expansion tool and expansion methods The present inventions relate to improved apparatus and methods for radially expanding tubulars, such as tubing, casing and sand-control screen assemblies in a subterranean oil or gas well, and more specifically, to a variable diameter expansion tool for expanding d... | 10/10/2006 |
| 6793022 | Spring wire composite corrosion resistant anchoring device A slip for use in the anchoring device on a well tool has a wedge shaped body and teeth on the exterior of the body. The teeth are formed from a ring segment of spring steel material mounted on and extending from the exterior of the body. The ring segment may be mou... | 09/21/2004 |
| 6666275 | Bridge plug A retrievable bridge plug assembly having an internal "pump through" bypass passage and a wedge assembly, slips and seals disposed thereon. A retrieving tool is provided for running, setting, releasing and retrieving the bridge plug assembly. A tubing sen... | 12/23/2003 |
| 6659179 | Method of controlling proppant flowback in a well A method of treating a subterranean hydrocarbon bearing formation penetrated by a perforated section of a cased wellbore. A treating mixture containing particulate material is pumped from the casing through the perforations and into the formation. After i... | 12/09/2003 |
| 6626241 | Method of frac packing through existing gravel packed screens Disclosed are improved methods and apparatus for improving the production of hydrocarbons from wells having gravel pack in a production zone. The methods and apparatus basically comprise the steps of entering a gravel packed well and perforating the grave... | 09/30/2003 |
| 6588344 | Oil well perforator liner A shaped charge apparatus having an improved liner for a shaped charge constructed from a combination of powdered metal and selected polymer material. Powdered heavy metal and polymer binder is compressively formed into a rigid shaped charge liner under v... | 07/08/2003 |
| 5044888 | Variable speed pump control for maintaining fluid level below full barrel level A variable speed pump control system and method which senses operational parameters during the first one half of the down stroke to control pump speed to maximize production. The method and equipment maintains ths fluid level of a well as low as possible ... | 09/03/1991 |
| 4766928 | Constant flow rate control valve In accordance with the present invention, a constant flow rate control valve is provided including a cup member disposed in the flow passage through the valve. The cup member has a port located in an end wall of the cup member and a plurality of ports in ... | 08/30/1988 |
| 4750276 | Impingement thermal treatment apparatus with collector plate Impingement heating or cooling apparatus that employs an axial flow fan, a plenum, collector and a columnating assembly for directing jets of a temperature controlled gas against the surface of a food product. Means for contacting a first layer of food pr... | 06/14/1988 |
| 4618308 | Carpet handling device A loader device for loading carpet rolls onto small trucks comprising a frame with a plurality of rollers mounted transversely thereon at spaced intervals along the length of the frame, the rollers being coupled together to be driven simultaneously in the... | 10/21/1986 |
| 4590857 | Ink metering apparatus An inker for a printing press in which an excess of ink is applied to the surface (45) of a resilient roller and the ink is metered by a metering member (10') to form a film of controlled thickness on the resilient roller surface. The metering member is a... | 05/27/1986 |
| 4590099 | Fibrous web saturator An apparatus and method to saturate a fibrous web. The apparatus comprises a sealed chamber divided to form a low pressure preparation zone and a high pressure treatment zone. Air is evacuated from the open area between the fibers in the web in the vacuum... | 05/20/1986 |
| 4567824 | Planetary conveyor system An automatic sheet register control system for a printing press comprising: photocells (81-85) sensing the position of a sheet (5) relative to printing cylinder (48U); and a computer (86-89) to generate signals to actuators (75a, 75b) to adjust the length... | 02/04/1986 |
| 4566692 | Computerized exercising device An exercising device comprising a computer associated with an actuating arm pivotally mounted on a frame, movement of the actuating arm being resisted by a double acting hydraulic cylinder. Position and pressure sensors associated with the hydraulic cylin... | 01/28/1986 |
| 4558669 | Ignition apparatus for a rotary internal combustion engine An improved seal apparatus for a rotary machine including a rotary internal combustion engine. The machine generally comprises a rotor rotatably disposed in a circular working section in a hollow machine housing, a divider valve, and for an internal combu... | 12/17/1985 |
| 4538518 | Ink metering apparatus An ink metering member (10') to form a thin film (130) of ink on a resilient roller surface (45) wherein the metering member comprises a hard, elongated strip having a first polished leading edge (25) and a second polished trailing edge (28b) formed on ea... | 09/03/1985 |
| 4532735 | Variable angle extruder blade surfacing machine A blade surfacing machine for precisely honing a pair of intersecting surfaces on an extruder blade. The working surface of a rotating honing stone is maintained in spring-biased contact with a precisely leveled guide surface to achieve linear uniformity ... | 08/06/1985 |
| 4533563 | Coating method An apparatus for applying silicone polymer coating to a web substrate comprising: a roll having a resilient surface; means to rotate the roll; a metering member comprising a hard, generally flat, elongated metallic strip having first and second polished e... | 08/06/1985 |
| 4527479 | Ink removal, circulating and distributing system A method and apparatus for continuously using ink and dampening fluid in a printing system includes removing ink and dampening fluid from a form roller after the form roller engages the printing plate. Mixing of the removed ink and dampening fluid to form... | 07/09/1985 |
| 4527471 | Dampening fluid removal device A method and apparatus to ink and dampen a lithographic printing plate including a dampening fluid removal device comprising a doctor blade positioned in pressure indented relation with a resilient inking roller to remove dampening fluid of low viscosity ... | 07/09/1985 |
| 4516921 | End seals for a rotary machine An improved seal apparatus for a rotary machine including a rotary internal combustion engine. The machine generally comprises a rotor rotatably disposed in a circular working section in a hollow machine housing, a divider valve, and for an internal combu... | 05/14/1985 |
| 4515079 | Planetary synchronizing device A planetary synchronizing system in which the length of an endless elastic conveyor is adjusted to maintain the length of the conveyor a multiple of the circumference of a drive wheel which can be driven at a variable speed, when the diameter of the drive... | 05/07/1985 |
| 4508426 | Locking means for solar collector A locking mechanism for holding reflector elements of a solar collector array in a position protected from high wind and storm damage including locking bar means mounted between and rotating with pairs of reflectors, latching means mounted on support pylo... | 04/02/1985 |
| 4491190 | Weight measurement apparatus A material handling and lift scale device comprising first and second rectangular frame members linked together by a parallelogram linkage system to confine relative movement between said frames to planar-parallel movement in a longitudinal direction only... | 01/01/1985 |
| 4490810 | Automated instruction, game and data retrieval system An automated interactive game, instruction and reference system having an optical laser videodisc player unit and using a videodisc record on which are recorded segmented groups of graphic and pictorial video information data interspersed with segmented g... | 12/25/1984 |
| 4489971 | Collapsible pensile food carrier A collapsible pensile food carrier is provided that comprises slidably engaged beverage support members adapted to receive and transport a plurality of drinking cups and having a foldable auxiliary food transport pouch suspended therefrom. A kit comprisin... | 12/25/1984 |
| 4483242 | Automated food processing equipment A food processing machine for folding rolled sandwich type food products comprising a plurality of conveyor bands for conveying food products through first, second, third and fourth folding mechanisms, the first, third and fourth folding mechanisms each i... | 11/20/1984 |
| 4483222 | Pipe reaming device A device for removing pipe attached to a fitting includes cutting apparatus for removing the pipe disposed within the fitting. A wrench apparatus is connected to the cutting apparatus for gripping the fitting to prevent its movement when the cutting appar... | 11/20/1984 |
| 4480843 | Polymeric annular snubbing apparatus For use in hydraulic workover operations for oil and gas wells, a snubbing element is provided that is made entirely of polymeric material such as polyurethane. According to a preferred embodiment of the invention, the strength and rigidity supplied to th... | 11/06/1984 |
| 4480791 | Sprayer apparatus A fluid sprayer apparatus attachable to an aircraft comprising a center section nozzle tube, a pair of detachable extension nozzle tubes connected to said center nozzle tube by quick disconnect fixtures, a manifold tube for supplying spray fluid to said n... | 11/06/1984 |
| 4479776 | Thermal treatment of food products Apparatus for imparting thermal energy to or removing thermal energy from a food product, said apparatus comprising intensive and semi-intensive thermal treatment sections and at least one equilibrating section.... | 10/30/1984 |
| 4474498 | Multiple-pass impingement heating and cooling device Apparatus adapted to deliver a temperature-controlled gas from a common plenum to at least two thermal treatment zones is provided. The subject apparatus is adapted to direct columnated jets of a temperature-controlled gas so as to impinge on at least one... | 10/02/1984 |
| 4466551 | Closure device A releasable closure device adapted to provide sealing engagement between abutting surfaces by means of a rotatable locking ring comprising a plurality of locking lugs adapted to frictionally engage recessed locking channels disposed in said surfaces.... | 08/21/1984 |
| 4453463 | Inking systems An inker for a lithographic printing press in which ink and dampening fluid are applied to the printing plate by a resilient applicator roller. A resilient ink metering member having a flat metering surface is mounted on a support member which is movable ... | 06/12/1984 |
| 4452139 | Dampening fluid evaporator and method A method and apparatus to ink and dampen a lithographic printing plate wherein one or more of four disclosed embodiments of a dampening fluid evaporator device directs a continuous stream of air or other drying fluid along the length of a single resilient... | 06/05/1984 |
| 4448528 | Portable laser vertical collimator and plumb line indicator Apparatus for transferring a floor marking to a location on an overhead in direct true vertical relationship to the floor marking comprising a laser device generating a pair of beams directionally separated 180 degrees, gimbal mounted to swing free within... | 05/15/1984 |
| 4448412 | Exercising device with double acting hydraulic cylinder An exercising device comprising a frame, actuating means, and a double acting hydraulic cylinder used therewith. The hydraulic cylinder includes a container having first and second chambers and passageways for placing the chambers in fluid communication w... | 05/15/1984 |
