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 |
| 7316195 | Drain plug retention system Disclosed is a drain plug retention system comprising a drain plug configured to open and close a drain hole located in the transom of a boat; a drain plug wrench configured to facilitate the removal and restoration of the drain plug with respect to the drain hole; ... | 01/08/2008 |
| 7278450 | Coupling assembly for securement in the open end of a pipe A coupling assembly for inserting into and coupling with the end of an open pipe, such as a cleanout pipe used in plumbing systems and wherein the coupling assembly may be used as a plug. The coupling assembly includes a collar secured around a medial portion of the... | 10/09/2007 |
| 7258711 | High volume liquid waste collection and disposal system A system for collecting and disposing of liquid medical waste includes a fluid collection cart and a draining and cleaning station. The fluid collection cart includes a pair of containers, each of which includes a draining port and a cap. Each cap includes an outer ... | 08/21/2007 |
| 7207454 | Method and apparatus for sealing and re-sealing an annular vessel opening A stopper assembly for sealing an opening of a vessel has a threaded body having a tapered head; an elastic jacket fitted over a portion of the body; a retention housing fitted over the body and jacket, the retention housing retaining the jacket from lateral displac... | 04/24/2007 |
| 7204383 | Seal container A seal container includes a container, a lid, a knob fitted on the lid, a soft seal fitted over a lower side of the lid, and a depressing member arranged under the knob and connected with a middle of the seal at a lower end; the depressing member has several slopes ... | 04/17/2007 |
| 7193152 | Fire resistant barrier A fire resistant assembly, which may include a first layer having a lumen therein, a second layer adjacent the first layer, a first structural member disposed between the first and second layers, and a box having a cavity defined by a wall, a first opening in the wa... | 03/20/2007 |
| 7163113 | Vent disc with center knob A member that positions a vent disc in an end of a container is provided. The member has at least one projection extending from the vent disc virtually solely for positioning the vent disc in its secured position in the end of a container. The at least one projectio... | 01/16/2007 |
| 7152631 | Pipe repair tool The pipe repair tool provides for repairing a damaged section of a pipeline. The repair tool comprises a main body having a top surface and a bottom surface. A compressible alignment portion is positioned above the main body. A compression plate is positioned above ... | 12/26/2006 |
| 7121526 | Drain plug assembly A drain plug for a threaded opening in a fluid container that is particularly suited for transom drains in recreational boats. The plug has an externally threaded cylindrical body with a central channel and transverse openings to permit fluid to flow from the centra... | 10/17/2006 |
| 7059815 | Elastic fastener An elastic fastener 1 comprises a hollow tubular portion 7, an internally threaded portion 2 provided at one of the ends of the tubular portion 7, and a flange 9 formed at the other end of the tubular portion 7. The tubular ... | 06/13/2006 |
| 7041261 | Sanitizing sponge container Sanitizing sponge disinfectant container bowls are disclosed, which are deep enough to hold cleaning sponges completely submerged in a disinfectant fluid. These containers are equipped with lids having downward projecting shafts or rotatable screw bolts which fit in... | 05/09/2006 |
| 7018153 | Plastic nut to be fitted to a component The invention relates to a plastic nut to be fitted to a component having an aperture, which, with a nut piece serving to hold a screw, can be plugged into the aperture and which, in order to bear on one side of the component, is provided with a flange which has a t... | 03/28/2006 |
| 7007719 | Pipe repair tool The present invention provides a pipe tool for repairing a damaged section of a pipeline. The repair tool comprises a main body having a top surface and a bottom surface. A compressible alignment portion is positioned above the main body. A compression plate is posi... | 03/07/2006 |
| 6830095 | Casting mold plug A plug for sealing and resealing the passages for heating and cooling liquid in a casting mold. The plug includes a stainless steel socket head NPT plug which is screwed into the passage to seal it. Inboard of the plug there is mounted a resilient expandable silicon... | 12/14/2004 |
| 6669048 | Neck apparatus and closure system for a multi-compartment bottle A multi-compartment bottle is provided, the bottle comprising a body defining a plurality of compartments, with each compartment being adapted to contain an amount of a liquid. A neck finish, integral with the body, has an outer surface which defines an o... | 12/30/2003 |
| 6607087 | Stopper for forming a gas-tight seal for a variety of bottles An adjustable bottle stopper that stoppers a bottle by expanding a cylindrical elastic spacer within the neck of the bottle. According to the invention, the bottle comprises of: a threaded disk nut, a bolt that is screwed into said threaded disk nut, a lo... | 08/19/2003 |
| 6513549 | Plug structure of a liquid drainage installation A plug structure of a liquid drainage installation includes a sealing ring clamped between two combined half bodies. The outer periphery of the sealing ring protrudes outward from the outer periphery of the two half bodies. Thus, the protruding dimension ... | 02/04/2003 |
| 6361099 | Vehicle floor covering with integral threaded drain tube and method of making same A molded floor covering for a vehicle floor includes a thermoplastic polymer layer with an integral, threaded drain tube extending therefrom. The drain tube is configured such that a distal end thereof can extend through a drain hole in a vehicle floor wh... | 03/26/2002 |
| 6290279 | Insertable vehicle floor drain Floor drains are provided that can be inserted through floor coverings and through multiple floor panels of a vehicle body. An elongate hollow body terminates at an open distal end and at an open proximate end. A flange extends circumferentially around th... | 09/18/2001 |
| 6189718 | Fluidtight seal for a container A fluidtight seal for a container is formed by abutting a metal ring with a step machined in a convexo-concave container closure device and inserting this assembly into an open end of the container. Under compressive force, the closure device deforms caus... | 02/20/2001 |
| 6170690 | Air-tightly sealable container with bell jar covering Provided by the invention is an air-tightly sealable bell jar container comprising a base plate and a bell jar covering mountable on the base plate. An air-tight sealing mechanism is obtained by forming a laterally and downwardly opening annular groove in... | 01/09/2001 |
| 6076797 | Mold sealing plug An apparatus for blocking a hole, especially for blocking a passageway within a mold. The apparatus includes one or more tapered members received within recesses of an expandable sleeve. As the one or more tapered members are drawn within the sleeve by a ... | 06/20/2000 |
| 5884668 | Plumbing tool for temporarily plugging a pipe The invention is directed to a plumbing tool for temporarily plugging a pipe which normally contains fluid or gas under pressure. The plumbing tool includes an elongate threaded rod having proximal and distal ends. A hollow elongate sleeve is disposed aro... | 03/23/1999 |
| 5881420 | Chimney clamp and seal A tool for clamping against the interior of a chimney flue having a scissors jack mechanism for adjustably clamping into various size chimneys. A seal plate for sliding over the shaft of the clamping device and for tightly sealing against the interior chi... | 03/16/1999 |
| 5740935 | Bung hole plug A bung hole plug formed of resilient synthetic material interfitted between a front and back plate. A threaded post is attached to the back plate, and used, in conjunction with a lock washer and nut, to draw the front and back plates together, thereby squ... | 04/21/1998 |
| 5735425 | Reusable beer keg plug An improved reusable beer keg plug replaces the conventional wooden bung and is formed of an elastomeric material as a tapered, expandable plug suited to being snugly fitted within a conventional beer keg sidewall tapered hole and thereafter expanded by a... | 04/07/1998 |
| 5657890 | Stopper assembly for a mold opening An improved packing means for sealing water holes in molds includes a first and second pressure elements having flanks on both sides and holding therebetween a steel ring. A first and second rubber rings are respectively provided next to the first and sec... | 08/19/1997 |
| 5297691 | Closure plug and methods of employing the same to maintain a fire-rated barrier A closure plug consisting of opposing frusco-conical sections to apply lateral forces to axially compress and radially expand o-ring means to seal the plug within an opening through a fire-rated barrier may support or enclose insulating materials filling ... | 03/29/1994 |
| 5197567 | Replacement drain hole closure A replacement closure assembly for the drain hole of a fluid reservoir is disclosed. The assembly is comprised of a threaded shaft portion which includes a clamping member at one end thereof and a backing member at the other end thereof. A sealing member ... | 03/30/1993 |
| 5184698 | Expandable plug An expandable plug particularly adapted to plug an engine's oil pan drain hole. The expandable plug includes a threaded bolt, a compression plate assembled with the bolt, and a compression nut assembled with the bolt and adapted to bear against the compre... | 02/09/1993 |
| 5131553 | Tubular plastic shipping, storage and dispensing container and parts usable therewith A container (20) made of a rigid tubular conformation, each end (21, 22) of which is flattened to produce and provide outwardly protruding edges (25). A transition portion (33) between the flattened end portion (22) and undeformed body portion has a slope... | 07/21/1992 |
| 5078294 | Method for tight sealing and hole arrangement A method for sealing holes, involves fitting an essentially bushing- and/or tube-shaped plug into a hole and then the wall of the plug is expanded radially along at least one axial segment. In this method, the plug is positively anchored axially in the ho... | 01/07/1992 |
| 5074380 | Method and apparatus for changing oil in an internal combustion engine An apparatus and method for removal of spent oil from an oil pan reservoir of an internal combustion engine includes a flexible tube engageable through the dipstick sleeve of the engine. In the preferred embodiment, a vacuum pump is used to draw vacuum wi... | 12/24/1991 |
| 5044403 | Dirt and moisture sealing pipe plug for sealing different size pipe A pipe plug of the type including a tie plate having a threaded bolt extending upward from a stepped circular base for mounted an elastic seal ring, a wedge ring and a cone permitting the cone to rotate on the threaded bolt to force the wedge ring to sque... | 09/03/1991 |
| 4964659 | Diaphragm latch mechanism A latching mechanism is provided for enabling perimeter locking for doors and the like. A diaphragm is provided which engages a surrounding frame along the perimeter of the diaphragm. Slots in the diaphragm enable a reduction of the diaphragm perimeter by... | 10/23/1990 |
| 4930657 | Floatable drain plug A drain plug, which has a hollow cylindrical body, an expander assembly within the body and a manually manipulatable handle, is fabricated of a material such that the drain plug floats. The handle is connected to the expander assembly and when the handle ... | 06/05/1990 |
| 4920747 | Header dump assembly The heater dump assembly comprises an inlet port; an exhaust port; and a bypass port disposed between the inlet port and the exhaust port. The bypass port may be selectively sealed with a closure assembly to route the exhaust gasses from the exhaust manif... | 05/01/1990 |
| 4919426 | Dust cover for game board The present invention relates to a dust cover for a game board which is preferably made of a transparent material such as plastic. The periphery of the cover is sized to facilitate placing of the cover over a game board such as, for example, a Scrabble bo... | 04/24/1990 |
| 4820474 | Pressure seal stud hole plug unit A reactor stud hole plug unit having a mandrel with a central stem having a threaded upper portion, a longitudinal passageway extending therethrough and a mandrel plate attached to the lower end. The mandrel plate has threads on its periphery which engage... | 04/11/1989 |
| 4762151 | Blank plug assembly A plug assembly for sealing a conduit. The assembly includes an annular, deformable sealing member, bound by an inner surface that includes opposed convexly curved surface portions. Opposed disks, each having an annular boundary edge, are positioned with ... | 08/09/1988 |
