Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8051879 | Open ended industrial pipe cap An open ended cap for a pipe is provided comprising a flexible tubular body wherein one end has an inwardly-extending radial rim extending in a plane perpendicular to the longitudinal axis of the tubular body of the end cap. The tubular body may include a finger gri... | 11/08/2011 |
| 7857007 | Two-part protector for a pipe end which is provided with an external or internal thread A two-part protector for a pipe end provided with an external thread or internal thread has a substantially cylindrical thread part of plastic material that covers the thread of the pipe end and further has a sleeve of metal that is also substantially cylindrical an... | 12/28/2010 |
| 7469721 | Thread protector for a pipe A thread protector for protecting threads of a pipe includes a body having female or male threads shaped for threaded engagement with male or female threads formed on a pin or box end of a pipe. An elastically flexible annular sealing projection extends from the bod... | 12/30/2008 |
| 7404419 | Tubular element end protector and tubular element comprising same A protector for the ends (2) of tubular elements (1), which comprises: a ring (3) made from a deformable material, wherein the external surface of one of the ends thereof has a conical thread (4); and | 07/29/2008 |
| 7371003 | Mixer foot and hand held mixer equipped with the foot A foot component of a hand mixer or blender, the hand mixer or blender having a case that houses a motor and the foot component being constructed to be coupled to the case. The foot component is composed of: a tube having a lower end; a bell made of a first material... | 05/13/2008 |
| 7360798 | Threaded joint for steel pipes A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided with improved anti-galling propertied by formi... | 04/22/2008 |
| 7357434 | Load ring for lifting by elevator, of casing having no upset A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can ... | 04/15/2008 |
| 7334608 | Removable sanitary sewer friction-fit plug for unwanted fluid exclusion This device will prevent intrusion of rainwater, groundwater and other unwanted fluids into a sanitary sewer system thereby alleviating the load on the sanitary sewer, collection, transmission and waste water treatment facilities thereby reducing costs. ... | 02/26/2008 |
| 7284770 | Thread protector for tubular members A pipe thread protector includes a case, a first seal member, and a second seal member. The case is attachable to an end of a pipe to protect a threaded region of the pipe. The case has a cylindrical or frustoconical portion having threads over at least a portion of... | 10/23/2007 |
| 7281546 | Thread protection system with weather barrier A method and system are shown for protecting the threaded ends of tubular goods such as oil field tubulars from physical damage and corrosion due to environmental factors. A thread protector is formed of a polymeric body having cylindrical wall portions which engage... | 10/16/2007 |
| 7163028 | Multipurpose plumbing tool A multipurpose plumbing tool has a body at one end, a head at an opposite end and an intermediate neck portion connecting the body and head. The marginal end portion of the body is cut back to form a reduced section, a shoulder being formed at the junction of the re... | 01/16/2007 |
| 7159619 | Thread protector for use on pin end of oilfield tubulars A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can ... | 01/09/2007 |
| 7140446 | Connector for expandable well screen A tubing connection arrangement that includes two expandable tubing sections is disclosed. In one embodiment, each of the tubing sections includes a filter screen sandwiched between inner expandable tubing and outer expandable tubing. On expansion of the tubing sect... | 11/28/2006 |
| 7100641 | Protective ducting There is described ducting comprising a plurality of interconnectible elongate ducting components (2, 4) which when assembled define an elongate, longitudinally extending internal channel (22) for receiving a pipe, cable or like elongate member, each d... | 09/05/2006 |
| 7066209 | Thread protector In a protector for protecting a trapezoidal female thread of a pipe formed to an end thereof, the protector has a male thread formed thereto so as to be threaded with the female thread as well as the height of the thread of the male thread is made larger than the he... | 06/27/2006 |
| 6976284 | Paint roller cover extender The paint roller cover extender is a paint roller cover accessory that would allow the corner areas of a room to be painted in one motion using a conventional paint roller. The product would feature a cylindrical cap having the same diameter as a roller cover, a clo... | 12/20/2005 |
| 6955013 | End cap locking mechanism for connecting pre-cast concrete structures An end cap locking mechanism used to protect attachment means connecting pre-cast concrete structural members from exposure to adverse environmental conditions having an end cap and a connection sleeve, wherein the end cap is inserted into an end of the connection s... | 10/18/2005 |
| 6944910 | Caster wheel assembly with anti-flutter control A caster wheel assembly for a wheeled device, such as a wheelchair, includes a housing suitable for connection to a wheeled device, a caster fork configured to mount a caster wheel for rotation, and a caster bolt connected to the caster fork and inserted into the ho... | 09/20/2005 |
| 6920900 | Sewer pipe section A pipe section for lining sewer pipelines along with a system of such pipe sections and method of lining a sewer pipeline are provided. The pipe section has a first end portion having a spigot. A protective ring is mounted around the spigot for transferring a load t... | 07/26/2005 |
| 6722392 | Assembly comprising a tube and a sleeve The invention concerns an assembly comprising a tube in composite material including carbon fibers embedded in a resin, an extremity of which is equipped with a sleeve in plastic material such as polyamide, optionally equipped with a jointing thread. According to th... | 04/20/2004 |
| 6595243 | Swimming pool plumbing water/debris barrier device and method A barrier device (1) and technique for use in the plumbing during construction of a swimming pool includes a tubular cylindrical section (2) having an open first end. A pop-out barrier (12) is integral with the cylindrical section, and is disposed to cove... | 07/22/2003 |
| 6527301 | Hose thread protector and splash guard A cover for use with a hose having a hose body which transitions into a distal end portion including external threads. The cover comprises an engagement portion which is releaseably attachable to the end portion of the hose. Extending from the engagement ... | 03/04/2003 |
| 6520211 | Transport pipe for solid materials A transport pipe for solid materials has a single layer pipe section having a threaded first end and a thread second end. The pipe section has a hardened inner mantle. A first coupling collar having a first threaded collar is threaded onto the threaded fi... | 02/18/2003 |
| 6502604 | Protecting and identifying fittings Compensating and identifying caps and cap assemblies for temporarily capping fittings. Each cap comprises a generally or pseudo cylindrically shaped member that includes a plurality of substantially planar panel segments contiguously connected to form a s... | 01/07/2003 |
| 6475093 | Protective cover assembly for a slip yoke in a vehicle drive train assembly A two piece cover assembly for protectively covering an end of a component, such as a slip yoke, in a vehicle drive train assembly includes a tubular piece and a cap piece. The tubular piece is hollow and is adapted to fit over and frictionally engage an ... | 11/05/2002 |
| 6453949 | Plug for medical bayonet connectors and drug infusion ports A plug and sealing system for medical bayonet connectors and drug infusion ports of the type having an interior self-sealing element. A male plug removably installed in the female collar portion of the connector, before or after penetration of the self-se... | 09/24/2002 |
| 6408887 | Dual size plumbing end cap A dual size plumbing end cap is disclosed which capable of sealing the end of two sizes of pipe includes a fluid impervious membrane having a first cylindrical wall extending therefrom and configured to envelop an end of a pipe having a first diameter and... | 06/25/2002 |
| 6382683 | High pressure gas fitting with non-rotatable features A non-rotational fitting assembly (10; 110; 210) is provided to prevent torsional forces of a nut (12, 112; 212) from being transmitted to a sealing face (16; 26; 246) of a fitting component (12; 22; 248). The assembly (10; 110; 210) includes at least one... | 05/07/2002 |
| 6325106 | Transport pipe for solid materials A transport pipe for solid materials has a single layer pipe section having a threaded first end and a thread second end. The pipe section has a hardened inner mantle. A first coupling collar having a first threaded collar is threaded onto the threaded fi... | 12/04/2001 |
| 6250337 | Mechanical plug assembly A two piece mechanical plug assembly for sealing low pressure pipelines. The mechanical plug assembly comprises a rigid body member and a flexible, cylindrical sealing member. The rigid body member has an upper portion and a lower portion of a frustoconic... | 06/26/2001 |
| 6217006 | Closed ended tubular safety device and method A method and apparatus to allow one person to feed a fishtape through a conduit into an electrical circuit panel box and electrically insulating the fishtape from contact with live electrical wires at the electrical circuit panel box, including the steps ... | 04/17/2001 |
| 6196270 | Thread protector A thread protector for protecting threads on the end of a pipe includes a base portion, a threaded portion extending axially from a first end of the base portion and threadably engageable with the pipe and an elongated annular bumper extending axially fro... | 03/06/2001 |
| 6158460 | Removable plug for sealing a port of a fuel distribution head An apparatus and method for sealing a port of a distribution head in a fuel dispensing system. A plug has a head, flange and threaded shank. The flange extends radially beneath the head and includes a seal engagement surface. A sealing member is positione... | 12/12/2000 |
| 6152183 | Nozzle cap for sealing a nozzle by welding with a flexible element and method therefor A nozzle cap for sealing a nozzle which penetrates a nuclear reactor vessel, and a method of using such, is provided, and includes a closure portion suitable for closing an open end of the nozzle under pressure associated with the nuclear reactor vessel, ... | 11/28/2000 |
| 6142186 | Thread-forming pipe plug Disclosed is a plug and fastener for sealing in an opening formed in a workpiece, and the plug and fastener includes a shank having a threaded portion for engaging with an internal wall of the opening and providing a first seal, and having a sealing porti... | 11/07/2000 |
| 6116285 | Removable threaded plug A removable plug for an internally threaded opening has particular application in a system for closing an opening in the sidewall of a pipe. The system includes a nipple having an inner end attached, such as by welding, to a pipe, and an outer end having ... | 09/12/2000 |
| 6082410 | Port plug A plug for a threaded port is formed of resilient elastomeric material and has upper and lower ends. A smooth non-threaded outer cylindrical wall is disposed between the ends. The outer cylindrical wall has an outer diameter sufficient to frictionally eng... | 07/04/2000 |
| 6062263 | Thread-forming pipe plug Disclosed is a combination plug and fastener for sealing in an opening in a workpiece. The combination plug and fastener includes a shank having a non-helical sealing portion and a threaded portion extending from the sealing portion. The threaded portion ... | 05/16/2000 |
| 6056015 | Protecting and identifying fittings A versatile plastic cap assembly for plugging and/or protecting fittings comprising a joined pair of capping members, one of such capping members being adapted for snap fit onto a male fitting, and the other being adapted for snap fit onto a female fittin... | 05/02/2000 |
| 6029683 | Pressurized gas tank valve plug There is provided a pressurized gas tank valve plug which can safely and effectively fit and seal a first pressurized gas tank valve and a second pressurized gas tank valve each valve having a valve stem of differing interior depth.... | 02/29/2000 |
