Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7419331 | Leaching chamber with varying slot opening height A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defi... | 09/02/2008 |
| 7396188 | Leaching chamber having varying slotted wall thickness A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defi... | 07/08/2008 |
| 7341285 | Chemical fusion of non-metallic pipe joints A pipe joint for joining pipes having a low surface energy and resistance to solvents. The components are an extrudable adhesive; a first pipe having a socket with an inside diameter, where the socket has a mouth, a self-centering bottom, and a cylindrical wall with... | 03/11/2008 |
| 7341280 | Rehabilitating pipe and method for laying a rehabilitating pipe A rehabilitating pipe is assembled inside an existing pipe using segments to repair the existing pipe. A coupling member is inserted through a segment when it is coupled in the longitudinal direction to another segment coupled already, and the coupling member is joi... | 03/11/2008 |
| 7314067 | Design and manufacturing method for multi-material tube structures The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes... | 01/01/2008 |
| 7306264 | Pipe having a water-tight in-line bell In a corrugated pipe comprising two sections joined by telescopically mating a male end of one section with a female end of the other section, an annular sealing element is fixed to the exterior surface of the male end and disposed to sealingly engage the interior s... | 12/11/2007 |
| 7257932 | Light weight building material The present invention relates to a light weight building material (1) for structural work. The light weight building material (1) comprises at least three walls, a first wall (11), a second wall (12) and a third wall (13) formed fr... | 08/21/2007 |
| 7238317 | Method of continuously producing a twin-wall pipe with a ventilation zone between a socket and an adjacent elevation A twin-wall pipe comprises an internal pipe and an external pipe. The external pipe is corrugated, having elevations and troughs. The twin-wall pipe is further provided with a socket. In a transition portion towards the twin-wall pipe and the socket, provision is ma... | 07/03/2007 |
| 7232597 | Corrugated polyamide tube A corrugated polyamide tube composed of a corrugated outer tube layer of polyamide resin and a flat inner tube layer fixed to the outer tube layer at bottom portions thereof, in which the inner tube layer is made essentially of a polyetheramide elastomer. ... | 06/19/2007 |
| 7207354 | Design and manufacturing method for multi-material tube structures The present invention provides an improved tubular structure which uses the properties of different materials, such as stiffness, strength, and density are exploited in a manner which combines the most attractive characteristics of existing metal and composite tubes... | 04/24/2007 |
| 7189027 | Corrugated leaching chamber A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls which are perforated with slots which slope downwardly, running from interior to exterior of the chamber. The slot height and or w... | 03/13/2007 |
| 7174922 | Composite strip windable to form a helical pipe and method therefor A composite strip 10 windable to form a helical pipe is disclosed. The composite strip 10 comprises: an elongate plastic strip 11 having a base portion 12 and at least one lengthwise extending rib portion 20 upstanding from the bas... | 02/13/2007 |
| 7165914 | Ditch liner system The specification and drawing figures describe and show one or more improved ditch liners removably assembled into an improved ditch liner system. The improved ditch liner system includes a first liner section and a second liner section. Both liner sections are form... | 01/23/2007 |
| 7156128 | Synthetic resin pipe An object of the present invention is to provide a synthetic resin pipe configured to perform water stop accurately by forming a part connecting convex portions of an outer pipe to be flat without reducing flexibility in order to compose a synthetic resin pipe havin... | 01/02/2007 |
| 7132141 | Multilayer polymer hose line or tubing having reduced length variations Two-layered or three-layered polymer tubing for use as a pressurized fluid conduit in automobiles can be either walled or have walls continuously or partially corrugated. The tubing has an outer layer of a hard polymer molding material and an inner layer of a soft r... | 11/07/2006 |
| 7063108 | Corrugation structure for pipe A corrugated pipe 2 has a plurality of corrugation structures 10, 12 positioned adjacent one another. The corrugation structures 10, 12 comprise an inner cylindrical wall 22, two annular wall portions 28, 32 that extend outwardly f... | 06/20/2006 |
| 7052209 | Corrugated stormwater chamber An arch shape cross section chamber for receiving and dispersing stormwater when buried beneath the surface of the earth is corrugated and has a cross section geometry which is a continuous curve. Preferably, the curve is a truncated semi-ellipse. A chamber also has... | 05/30/2006 |
| 7038133 | Wire harness protector In a wire harness protector comprised of a gutter-like protector main body with a bottom wall and both side walls, for accommodating corrugated tubes 9, into which a wire harness is inserted, in multi tiers in the vertical direction and a cover for covering a... | 05/02/2006 |
| 7004201 | Vibration absorbing hose A vibration absorbing hose has a corrugated portion extending substantially entire part of the hose and end portions of straight cylindrical shape. The vibration absorbing hose has multi-layered construction of tubular inner rubber layer, pressure resistant reinforc... | 02/28/2006 |
| 7004202 | Composite strip windable to form a helical pipe and method therefor A composite strip 10 windable to form a helical pipe is disclosed. The composite strip 10 comprises: an elongate plastic strip 11 having a base portion 12 and at least one lengthwise extending rib portion 20 upstanding from the bas... | 02/28/2006 |
| 6983769 | Vibration absorbing hose A vibration absorbing hose including a corrugated portion has multi-layered construction of tubular inner rubber layer, pressure resistant reinforcement layer formed on an outer side of the inner rubber layer by providing reinforcing yarns. A radial depth B of the p... | 01/10/2006 |
| 6933028 | Fire-resistant fuel transport pipe A plastics material tube that is particularly resistant to fire, such that its wall is formed by a corrugated tube of flammable plastics material, by a smooth tube lining the outside of the corrugated tube and made of a plastics material that limits flame propagatio... | 08/23/2005 |
| 6907906 | Cuffed hose and method of manufacture The present invention is directed towards an improved flexible hose (10). The hose (10) is comprised of at least a flexible material (28) and a reinforcing rod (12) positioned externally of the flexible material (28). Terminal ends... | 06/21/2005 |
| 6905286 | Porous pipe and apparatus and method of producing the same A porous pipe having an excellent absorbing and draining function, a producing apparatus capable of producing a porous pipe at high speed and low cost, and a method of producing a porous pipe are provided. The porous pipe is a pipe formed by spirally winding a tape.... | 06/14/2005 |
| 6889714 | Tendon receiving duct for a monostrand bonded post-tension system A tendon receiving duct having a tubular body with a plurality of corrugations extending radially outwardly therefrom. Each of the corrugations is in spaced relationship to an adjacent corrugation. The tubular body has an interior passageway suitable for receiving s... | 05/10/2005 |
| 6854925 | Storm water reservoir with low drag A system using pre-molded polyethylene galleries, utilized for septic or storm water applications, to facilitate rapid and even distribution of effluent and particles across the gallery installation when utilized as a septic system, or minimizes the resistance to st... | 02/15/2005 |
| 6840285 | Corrugation structure for pipe A corrugated pipe (2) has a plurality of corrugation structures (10, 12) positioned adjacent one another. The corrugation structures (10, 12) comprise an inner cylindrical wall (22), two annular wall portions (28, 32) that extend o... | 01/11/2005 |
| 6773340 | Air-conditioning duct for vehicle A vehicle air-conditioning duct 1 has an oblong cross-sectional configuration. The air-conditioning duct 1 has a top wall 16, a bottom wall 18 and side walls 12, 14 enclosing an interior space and at least one constriction 22, 2... | 08/10/2004 |
| 6670021 | Monolithic ceramic attachment bushing incorporated into a ceramic matrix composite component and related method 12A high temperature gas turbine component includes an inner core made of a monolithic ceramic material embedded within an outer CMC shell. The inner core may be formed with a through hole, blind hole, wear pads and the like. A method of making the bushin... | 12/30/2003 |
| 6666233 | Tendon receiving duct A tendon receiving duct having a tubular body with a plurality of corrugations extending radially outwardly therefrom. Each of the corrugations is in spaced relationship to an adjacent corrugation. The tubular body has an interior passageway suitable for ... | 12/23/2003 |
| 6659135 | Tendon-receiving duct with longitudinal channels A tendon-receiving duct having a tubular body with an interior passageway and a plurality of corrugations extending radially outwardly of the tubular body. Each of the plurality of corrugations has an interior opening to the interior passageway. The tubul... | 12/09/2003 |
| 6644357 | Corrugated pipe with improved profile stability A corrugated pipe is provided having a pipe structure of an inner wall having an interior surface and an exterior surface, and an outer wall having corrugations, each of the corrugations having an interior surface and an exterior surface, each corrugation... | 11/11/2003 |
| 6461078 | Plastic sewage pipe Systems for leaching liquid waste, particularly waste water. More particularly a cylindrical conduit or pipe for use in leaching systems. The pipe further has axially directed cuts or apertures in conduit/pipe valleys, has ridges, channels and grooves ove... | 10/08/2002 |
| 6410852 | Continuously-threaded PVC electrical conduit A conduit to house electrical wires is provided between two electrical service boxes. The conduit includes a length of continuously-threaded Schedule 80 PVC tubing which has a first end and a second end. The tubing is externally threaded from the first en... | 06/25/2002 |
| 6408848 | Method and apparatus for conveniently setting a predetermined volume for re-breathing The present invention provides a method and device for conveniently setting the volume of a variable-length tubing loop used in a re-breathing circuit to various selected predetermined values. The device includes a card of an inelastic, disposable materia... | 06/25/2002 |
| 6336770 | Drainfield pipe installation device A drainfield pipe having a rib radially extending from its wall is supported by a device which comprises opposing elongate anchor members having inside edges tapering away from a clamping end for sliding the drainfield pipe between the anchor members when... | 01/08/2002 |
| 6315715 | Flexible inner liner for the working channel of an endoscope A tubular member useful as an inner liner for the working channel of a flexible endoscope has a distal portion which is specially treated to make it highly flexible and resistant to kinking or collapsing when it bends with the flexible section of the endo... | 11/13/2001 |
| 6230746 | Recoverable article A recoverable article includes an inner resilient tubular member that is held in a laterally exapanded configuration by engagement with outer holdout strips, wherein the outer surface of the inner member is provided with a plurality of channels extending ... | 05/15/2001 |
| 6206392 | Stabilizer bar apparatus for use in a vehicle suspension A stabilizer bar apparatus for use in a suspension of a motor vehicle includes a hollow tubular member (22) having first and second arms (24,26) disposed at opposite ends of a center section (28). The center section is adapted to be rotatably attached to ... | 03/27/2001 |
| 6197395 | Hollow reinforcing members and composites containing the same There is disclosed a hollow reinforcing element for casting into composites, which in use defines passageways that may communicate to the exterior of the composite and that can serve as conduit arrays in structures formed from the composite. Benefits incl... | 03/06/2001 |
