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 |
| 7299822 | Liquid level regulation apparatus Apparatus (10) is defined for regulating the level of liquid on a first side of a barrier (12) with respect to a moveable level of liquid on a second side of the barrier. The apparatus includes an inlet conduit (30) for positioning on the second... | 11/27/2007 |
| 6997644 | Passive method for obtaining controlled drainage from a vessel Passive control of fluid flow from a vessel is provided by a floating weir assembly. The assembly includes a float and a weir opening that is in fluid communication with an outlet from the vessel. The weir opening and the fluid path connecting the weir opening and t... | 02/14/2006 |
| 6915818 | Floating arm pick up device A fluid pick up device for removing fluid from storage tanks includes an intake, a submerging member that maintains the intake submerged in the fluid, and a float that enables the intake to move in relationship to the level of fluid. The submerging member can includ... | 07/12/2005 |
| 6604889 | Sluice gate wall thimble A sluice-gate wall thimble has a support stem (1, 12) which covers an embedment side of a sluice-gate nut (2) and is fixable to a wall anchor (5, 11). The sluice-gate nut is inside threaded and fixable to an embedment side (16) of a predetermined sluice-g... | 08/12/2003 |
| 6474361 | Floating weir assembly and fluid flow management system comprising same A floating weir assembly for controlling the discharge of fluid from a fluid reservoir. The weir assembly includes a buoyant body preferably comprising a sidewall surrounding a central bottom opening. A weir is provided on the inside surface of the sidewa... | 11/05/2002 |
| 5680989 | Adjustable weir for liquid distribution systems An adjustable weir for use in a liquid distribution system utilizes a weir plate having a weir opening whose height can be adjusted vertically. The weir plate is mounted to the end of a fluid distribution outlet in a manner which will maintain its proper ... | 10/28/1997 |
| 4669914 | Hydrologic discharge control assembly and method A hydrologic discharge control assembly and method is disclosed for automatically withdrawing bottom water from a body of water comprising a housing for forming a reservoir to receive bottom water for automatic gravitational discharge relative to the heig... | 06/02/1987 |
| 4146346 | Apparatus and method for controlling tide waters The salinity intrusion of ocean tidewater into a communicating fresh water river is prevented by laterally restricting the out-flow cross-section of the river with a series of flotation weirs and control weirs so that the surface level of the out-flow cro... | 03/27/1979 |
