Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7387731 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 06/17/2008 |
| 6695357 | Threaded pipe connection having a retainer gasket with pressure relief vents A connection for threaded pipes and other tubular sections including a gasket for interposition between a first and an opposing second interface surface of the connection. The gasket includes a retainer and a generally annular seal element received in a g... | 02/24/2004 |
| 6527304 | Brake tube connector A connector (10) for sealing an elongated tube (14) to a body (22) comprises a nut (12) concentrically about the tube (14) proximate the flared end (16). The nut (12) has a threaded exterior portion (34) and an abutting face (42) proximate to and concentr... | 03/04/2003 |
| 6494501 | Pipe connector, pipe-connecting structure, and connecting method A pipe joint connecting a pipe using an anaerobic adhesive, which possesses a double pipe structure formed with an inner pipe fitting into the inner circumference side of the end of the pipe, and an outer pipe fitting into the outer circumference side of ... | 12/17/2002 |
| 6488316 | Flexible metal hose termination fitting with adapter for termination plate A sealed coupling system for flexible hose, such as corrugated hose, includes a termination fitting that mounts the sealed system to a static structure, such as a wall or the like. The system uses threaded connections to fix the hose to the fitting and to... | 12/03/2002 |
| 6481762 | Pipe coupling A pipe coupling for attachment to a pipe includes a sleeve. One end of the sleeve is configured to receive a pipe end. The pipe coupling also includes an annular gasket disposed within the end of the sleeve for encircling the pipe end. The coupling includ... | 11/19/2002 |
| 6447028 | Joint fitting A fitting for connecting two components is described. The fitting may be explosion proof for use in hazardous environments. The fitting may swivel allowing fast and easy connection to fixed components, thus minimizing the time required for installation an... | 09/10/2002 |
| 6398270 | Corrugated pipe joint A corrugated pipe joint for coupling corrugated pipes includes at least two joint components, each of which includes a joint main body made of a synthetic resin and including an arc-shaped portion and tightening projecting edges which are outwardly projec... | 06/04/2002 |
| 5842817 | Pipe compression ring A compression or jacking ring includes a first component constructed of two layers of a material that is comparatively non-elastic and has a Poisson's ratio preferably not greater than 0.3. A second component that is comparatively elastic and has a compar... | 12/01/1998 |
| 5549968 | Compressible fabric substrate A composite fabric structure comprising a plurality of warp and fill fibers or yarns forming a fabric substrate which is impregnated with a matrix material which contains a plurality of cells which impart compressibility to the fabric substrate. This fabr... | 08/27/1996 |
| 5531454 | Expandable gasket, sealed joint and method of forming same An improved expandable gasket, sealed joint and method of forming a sealed joint which includes a gasket having at least 5% by weight unexpanded or unexfoliated graphite. The graphite material is preferably a mixture of expanded and unexpanded graphite co... | 07/02/1996 |
| 4848777 | Pressure energized/pressure intensified casing seal A casing seal for use with a source of high pressure fluids with apparatus for preventing shredding of the seal with variations in fluid pressure. A T-shaped annular metal ring provides a multiplication of fluid pressure so pressure exerted on an elastome... | 07/18/1989 |
| 4046409 | Joining arrangement for ventilation ducts and the like An arrangement for joining of ventilation ducts and the like comprises a first and a second member intended for connection with a first duct end and a second duct end resp., the second member being provided with an upright stiffening leg and a horizontal ... | 09/06/1977 |
