...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7364385 | Protective flood barrier A flood control system including panels made from plastic sheeting adhered to a frame and stacked one on top of the other. The panels are held in position by a series of columns, each of the columns having an H-shaped cross section that provides for and defines pane... | 04/29/2008 |
| 7281879 | Portable flood-barriers system A portable flood-barrier-system can include a portable block of substantial mass; and a deflatable bladder, a first portion of which is disposed on a substrate; the block being disposed at least partly on the first portion of the bladder so as to releasably compress... | 10/16/2007 |
| 7117642 | End cap for rain gutters An end cap for rain gutters having an overlying cover for deflecting leaves and other debris to prevent gutter and downspout clogging. The end cap includes a gutter trough closure region, for blocking water flow from the end of the gutter, and a second, above-trough... | 10/10/2006 |
| 7094002 | Holding apparatus for a dam unit of a dam installation and a method for holding and raising or lowering such a dam unit Holding apparatus for supporting a dam unit, wherein the apparatus includes a frame structure including at least one support member. The at least one support member is arranged to support the dam unit when the dam unit is raised from a lowered position to a holding ... | 08/22/2006 |
| 7033112 | Water-retaining structure Device for retaining water comprising a foundation, a retaining wall movably attached to the foundation and a shore movably, particularly hingingly, attached to the foundation, in which the shore and the retaining wall are movably, particularly hingingly, attached t... | 04/25/2006 |
| 6840711 | Flood control panel system A modular flood control panel is provided having a base and supporting “A”-frame structure. The base locks into the ground, or supporting wall of sandbags, with a series of four adjustable angle stakes per each panel. The invention folds flat when not in use, fo... | 01/11/2005 |
| 6837655 | Submersible canal bypass A submersible canal bypass is used to bypass the flow around a distinct section of an earthen canal for lining. The canal bypass is placed within the canal and uses a plurality of pipelines and a plurality of bulkheads assembled from portable modular sections. The h... | 01/04/2005 |
| 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 |
| 6543968 | Submersible canal bypass A submersible canal bypass is used to successively bypass the flow around distinct sections of an earthen canal for lining. The canal bypass is placed within the canal and uses a plurality of pipelines and a plurality of bulkheads assembled from portable ... | 04/08/2003 |
| 6540437 | End dam assembly for drainage channel An end dam for a generally U-shaped moisture management channel comprising: a vertical wall having a front and a rear surface and a base edge; a first flange extending at a right angle from the rear surface in the area of the vertical wall base edge, inte... | 04/01/2003 |
| 6409427 | Soil erosion collector A soil erosion collector that fits in a standard two foot drainage ditch. It is preferably formed of pre-cast reinforced concrete. Its purpose is to separate eroded soil in storm run off. The soil Erosion Collector is designed to create a ponding effect, ... | 06/25/2002 |
| 6287051 | Fixable seal sluice gate A fixable-seal sluice gate has a valve vise (18, 19, 25, 26, 31, 32) that forces a sluice-gate valve uniformly and tightly in sealing-surface contact with a domed seal ring (4) that is fixable conveniently and removably intermediate a sluice-gate plate (3... | 09/11/2001 |
| 6213683 | Flexible film weir A flexible film, of which a flexible film weir is composed, has a two-dimensional configuration when expanded, and the total length of the periphery of the flexible film is set longer than the mounting length of mounting faces (a river bed and faces of sl... | 04/10/2001 |
| 6132140 | Method for the fabrication of a dam or barrier A water dam includes a number of loading pallets arranged side-by-side and inclined outward from the water supported by supports. Membranes are placed on loading pallets and extend a distance in front of the pallets under the water. The membranes may be h... | 10/17/2000 |
| 5997213 | Ditch check A ditch check includes a plurality of bodies that are located in two rows with a gap defined between the two rows. An M-shaped anchor has two legs and a central section, with one of the legs being located adjacent to one face of a body in one row and the ... | 12/07/1999 |
| 5895579 | Adjustable inlet for waste water treatment apparatus A method and apparatus for controlling the fluid flow through a waste fluid inlet channel, such as for a sewage treatment plant, includes a weir that may be inserted into the channel. The weir may be one or more plates that serve to reduce the effective c... | 04/20/1999 |
| 5882144 | Device and method for triggering the destruction of a selected part of a hydraulic structure, such as a levee, a dike or a backfilled dam, and hydraulic structure comprising such a device This device for triggering the destruction of a selected portion (1 or 11) of a hydraulic structure such as an embankment dam, dike, or levee built out of erodible material so as to be destroyable by hydraulic erosion is constituted by at least one massiv... | 03/16/1999 |
| 5795467 | Adjustable inlet for waste water treatment apparatus A method and apparatus for controlling the fluid flow through a waste fluid inlet channel, such as for a sewage treatment plant, includes a weir that may be inserted into the channel. The weir may be one or more plates that serve to reduce the effective c... | 08/18/1998 |
| 5791817 | Ditch dam A one-piece plastic back brace for a ditch dam is shaped like the V of the ditch. It has a groove on the top back edge that engages a span pipe which is placed across the ditch. An apron is mounted to the span pipe before the back brace is engaged. The ap... | 08/11/1998 |
| 5720575 | Water control and diversion headgate and method of manufacture A water control and diversion headgate for use in irrigation systems, simplifying the headgate construction, easing its operation and improving its overall efficiency. This headgate includes a corrugated pipe, sometimes provided with an internal liner and... | 02/24/1998 |
| 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 |
| 5195846 | Spillway for discharging extraordinary floods at dams having at least two flood discharge structures For the purpose of providing a more economical alternative to conventional control gates for the quasi-permanent closure of all or part of the length of the overflow spillway of a dam except when discharging extraordinary floods, the invention consists of... | 03/23/1993 |
| 5156489 | Adjustable flume A fully portable flume for a canal or water channel comprising a horizontal sill across the width of said flume; means to raise or lower the sill while maintaining it in a horizontal position; a movable transverse wall connected at its upper edge to the s... | 10/20/1992 |
| 5077945 | Doorway flood barrier A doorway mounted flood barrier including a barrier wall having two opposite vertical side edges and a horizontal bottom edge, and retainer means disposed between the barrier wall and a lower portion of the doorway for holding the barrier wall sealingly i... | 01/07/1992 |
| 5032038 | Overflow spillway for dams, weirs and similar structures For the purpose of effecting a quasi-permanent raising of the normal water level of an impounded reservoir and thereby augmenting its storage capacity except during the passage of major floods, the invention consists of installing on the sill of the spill... | 07/16/1991 |
| 4881847 | Artificial water lagoons An arrangement to increase (or decrease) the temperature in sea or lake water within a limited area. The arrangement is constituted by a basin (F, P1-P4, V1-V3, N1-N3 etc.) which is constructed and located in the sea water which temperature is desired inc... | 11/21/1989 |
| 4729692 | Apparatus and method for quieting flowing waters A method and apparatus for quieting flowing waters in which a wall supported by a barge crosswise of water flow with structural members of the wall engaging an underwater obstruction to prevent the wall and barge from moving with the flow of water whereby... | 03/08/1988 |
| 4467645 | Weir A portable weir for measuring water flow through an irrigation canal is provided in an obliquely disposed check gate shaped to fit the cross sectional configuration of the canal. The weir opening in the check gate is reinforced by a cooperating network of... | 08/28/1984 |
| 4330224 | Collapsible rubber dam installation A collapsible rubber dam installation comprising a rubber dam built across a watercourse such as a river or the like and operative to be raised by supplying fluid such as air, water or the like. The dam is collapsed by discharging the fluid therein into a... | 05/18/1982 |
| 4147451 | Apparatus for valve installation in a flume A valve installation for a flume wherein a preinstalled liner is cast in place at the time of flume construction. The valve body with sealing gasket is later installed within the liner. Wedge plates and associated force-applying bevelled washers are insta... | 04/03/1979 |
| 4024717 | Folding aluminum rice and irrigation box A hinged, folding box-shaped device for controlling the water flow between fields, such as rice fields, including crop fields, divided into separate specific areas by dirt comprised checks, levees, and ditches. The box has a generally rectangular configur... | 05/24/1977 |