Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 4455275 | Method of manufacturing bodies of silicon nitride Bodies of silicon nitride are produced by enclosing a silicon nitride powder in a gas-tight glass casing and subjecting the casing to isostatic pressure using gas as a pressure medium at a temperature of at least 1600° C. and a pressure of at least 100 M... | 06/19/1984 |
| 4453872 | Handling apparatus for pipe and other tubulars An apparatus for transferring tubulars between pipe racks and a drilling rig floor including a stationary trough located below and extending towards the drilling rig and a movable trough aligned with the stationary trough having one end supported on the d... | 06/12/1984 |
| 4447777 | Magnetic pipeline inspection vehicle with metallic foil and bristle contacts supporting the vehicle An improved magnet assembly for a magnetic pipeline inspection vehicle in which the assembly is rigidly secured on the body of the vehicle which is ferromagnetic and provides an annular magnetic return path between magnetic pole members formed of permanen... | 05/08/1984 |
| 4446100 | Method of manufacturing an object of metallic or ceramic material An object of ceramic or metallic material is manufactured by isostatic pressing of a body preformed from a powder of the metallic or ceramic material, the preformed body (10) then being embedded in glass, for example in a mass of glass particles (16) in a... | 05/01/1984 |
| 4441665 | Axially telescopic coil carrier In an axially telescopic coil carrier comprising a plurality of parts for receiving threads or yarns, wherein carrier elements extending from a respective ring element extend lengthwise of the coil carrier, from a substantially cylindrical surface and are... | 04/10/1984 |
| 4440008 | Tumbler lock A tumbler lock having an outer cylinder and an inner cylinder rotatably mounted therein with springless plate-shaped tumblers which move freely in guide slots. Tumbler locks of known construction can be opened by unauthorized persons because an object can... | 04/03/1984 |
| 4439091 | Pipe feeding system A pipe feeder for automatically moving pipe off of or onto the top row of a stack of pipe. A pair of stanchions are provided with a system for supporting a plurality of rows of pipe next to the stanchions such that the length of pipe is generally parallel... | 03/27/1984 |
| 4437494 | Mains insertion In a method of replacing a section of an old cast iron main with a new main of plastics pipe material, the section to be replaced is isolated from the adjacent live main after a by-pass is fitted between the section and the main. One end of the pipe is th... | 03/20/1984 |
| 4436375 | Sight glass apparatus A sight glass assembly comprising a housing structure having a circular opening therethrough, the opening having an enlarged section, a lens disposed across the opening and having a peripheral portion received within the enlarged section of the housing st... | 03/13/1984 |
| 4433648 | Control means for engine cooling systems In a vehicle having an engine and a cooling system for the engine including means for circulating a coolant through the engine, a fluid motor driven fan disposed in operative relation with the radiator and an engine driven pump operatively connected to th... | 02/28/1984 |
| 4432287 | Incinerator and hearth construction therefor An incinerator including a housing defining a combustion chamber, a hearth mounted in the chamber, the hearth having a plurality of vertical openings, air passageways in the hearth each communicating with at least one of the vertical openings, a burner mo... | 02/21/1984 |
| 4430947 | Shelf support system A support system for shelving or the like comprising a first female element hich is attached to the side wall or other wall of a display stand and a second male element which is attached to the sides or ends of shelving provide for the display stand. The s... | 02/14/1984 |
| 4428396 | Adjustable valve assembly A valve assembly has an elongated tubular body having a fluid passageway axially therethrough providing first and second end ports with a floating valve seat and an engageable poppet disposed in the fluid passageway of the body between the ports thereof a... | 01/31/1984 |
| 4427310 | Lubricated bearing A lubricated bearing has a rotatable structure which includes a housing with an opening at one end, a bearing cup and a retaining member. The retaining member grips the exterior of the bearing cup and the interior of the housing to secure the bearing cup ... | 01/24/1984 |
| 4426182 | Tubular handling apparatus An apparatus for transferring tubulars between the floor of a drilling rig and a pipe rack including an elongated main support frame adapted to be positioned in proximity to the pipe rack, a lift trough positioned longitudinally of the support frame and h... | 01/17/1984 |
| 4421451 | Workpiece gripping mechanism for industrial robots A workpiece gripping mechanism for an industrial robot is described. A support member having a first jaw member mounted on it for pivotal movement about a first axis is provided. The support assembly and the first jaw assembly define a first rotary fluid-... | 12/20/1983 |
| 4411390 | Insulation blowing and spraying apparatus An apparatus for producing particulate material from compact masses of materials such as that used for insulation and then pneumatically dispensing the material in a uniform flow and with a preselected and consistent density. The apparatus includes a hopp... | 10/25/1983 |
| 4410327 | Diaper A diaper incorporating quick release means in the form of strips of Velcro (trademark) tape. A body encircling edge of the diaper is provided with strips of the tape on both sides while the opposite edge is provided with complemental strips fixed directly... | 10/18/1983 |
| 4408380 | Method for making connecting rods for internal combustion engines A method of making a connecting rod for an internal combustion engine having a one-piece crankshaft construction generally consisting of positioning a first crankpin bushing segment having a connecting rod shank consisting of a reinforced resinous materia... | 10/11/1983 |
| 4406891 | N-Methanesulfonic acid derivatives of istamycin A or B and production thereof As new semi-synthetic antibiotic derivative are provided N-methanesulfonic acid derivatives of istamycin A or B which are lower toxic than the parent antibiotic and retain usefully high antibacterial activity. They are produced by N-sulfomethylation in su... | 09/27/1983 |
| 4403375 | Tying device A low profile, flexible tying device for holding or retaining shoelaces in place. The device includes a base portion having a slot and a tongue portion for insertion into the slot. A portion of the tongue portion is serrated to engage surfaces defining th... | 09/13/1983 |
| 4402988 | Fruit juice impregnated plantains A plantain impregnated with fruit juice, particularly orange juice, having a unique taste and texture. Plantains are selected with ripeness such that the sugar content is derived from at least 70% conversion of the starch to sugar, peeling the plantains a... | 09/06/1983 |
| 4400291 | Ethylene gas generating composition An ethylene gas generating liquid composition for catalytic conversion to ethylene. Ethanol is the primary ingredient of the liquid composition but there is also present 1.0% to 15% methanol, 0.1% to 10% of an ester such as amyl acetate and 0.1% to 15% of... | 08/23/1983 |
| 4398605 | Fire extinguishing composition and method A fire fighting composition and method for spraying a low volume liquid stream without foam onto a fire that conserves the volume of fluid used and yet more quickly snuffs out the fire. The fire fighting composition is formed from a concentrate comprising... | 08/16/1983 |
| 4387752 | Tree shearing apparatus A tree shearing apparatus including a main frame mountable on support arms of a machine, a pair of pivot pins mounted on the main frame, a blade support arm mounted on each of the pivot pins for pivotal movement about the axis of that pivot pin, a cutting... | 06/14/1983 |
| 4385881 | Ultrahigh pressure apparatus An improved ultrahigh pressure apparatus which comprises; a pair of opposed frustoconical punches, an annular die which has a central bore therethrough formed straight-cylindrical at least partially at an inner portion and which is placed between and in a... | 05/31/1983 |
| 4382738 | Pipe handling system A system for transferring lengths of pipe laterally between a pipe rack and a pipe handling apparatus. the system comprises two spaced apart arms located on one side of the pipe handling apparatus next to the rack. Each arm has one end pivotally coupled t... | 05/10/1983 |
| 4382591 | Clamping means for trough of pipe handling apparatus Clamps are provided for clamping a length of pipe to the trough of a pipe handling apparatus. The clamps comprise two arms pivotally coupled to the trough on opposite sides thereof. The arms are movable to open and closed positions by two piston rods pivo... | 05/10/1983 |
| 4382566 | Lightweight aircraft In a lightweight aircraft having a principal longitudinal load-carrying member, a wing structure mounted on the load-carrying member, a tail rudder and elevator assembly mounted on the load-carrying member, a propeller mounted on the load-carrying member ... | 05/10/1983 |
| 4380297 | Pipe storage system A storage system for securely holding lengths of pipe or the like and which comprises a plurality of pairs of rails having ends removably coupled to a pair of stanchions at different levels for holding a plurality of rows of pipe. Means is provided for re... | 04/19/1983 |
| 4379676 | Pipe handling system A system for transferring lengths of pipe laterally between a pipe rack and a pipe handling apparatus. The system comprises two spaced apart arms located on one side of the pipe handling apparatus next to the rack. Each arm has one end pivotally coupled t... | 04/12/1983 |
| 4379596 | Superpositioned vehicle wheel balance weights and method A balance weight for counterbalancing vehicle wheels having a rim flange and a protruding lip to receive the weight composed of a body having a mass of heavy metal and a clip or adhesive to position the weight on the wheel. The body has a front wall facin... | 04/12/1983 |
| 4378959 | Apparatus for performing work functions An apparatus for performing a work function on a workpiece comprising a stationary base, a rotatable base mounted on the stationary base, a hydraulically actuated mechanism for rotatably displacing the rotatable base relative to the stationary base, a low... | 04/05/1983 |
| 4371589 | Process for depositing protective coating and articles produced An article of improved wear characteristics and composed of a relatively low wear resistant base metal coated by a particulate refractory metal having a melting point of at least 1490° C. deposited within the near-surface region thereof comprising a base... | 02/01/1983 |
| 4371302 | Pipe handling apparatus The apparatus is employed for transferring pipe to and from the floor of a drilling rig. It comprises a stationary trough located below the rig floor and a movable trough aligned with the stationary trough. The movable trough has a vertically movable rear... | 02/01/1983 |
| 4370895 | Friction drive wheels A friction drive wheel, particularly for obtaining a rotary drive for a hydraulic pump or electrical dynamo on a pipeline inspection pig, has a hub with a central hole and keyway for mounting on a axle. Attached to the hub is a rim in which are mounted bu... | 02/01/1983 |
| 4359453 | Atherosclerosis treatment method A treatment of atherosclerosis by the application of external electromagnetic energy capable of the generation of heat and biophysical alterations in intracellular particles and particles within atherosclerotic plaques to induce resolution of the atherosc... | 11/16/1982 |
