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Robert A Gravier: Concrete block for retaining walls. Allan Block Corporation, James R Cwayna, March 20, 1990: US04909010 (80 worldwide citation)

A concrete block particularly directed to the construction of retaining wall systems, characterized particularly by a step back frontal surface which includes a frontal surface having a flat decoratable portion over a substantial vertical dimension thereof and tapered rearwardly and vertically from ...


13
David D Woodbridge: Wave operated electrical generation system. Duckworth Hobby Allen & Pettis, April 7, 1981: US04260901 (78 worldwide citation)

A system for converting the mechanical energy in the wave motion of a body of water into electrical energy. A frame is fixed with respect to the wave motion of the water. A flotation element is buoyantly supported by the water and constrained to follow only the vertical component of the wave motion. ...


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Thomas J Lochtefeld, Charles E Sauerbier: Boat activated wave generator. Light Wave, Dickinson Wright PLLC, January 19, 1999: US05860766 (76 worldwide citation)

The present invention is a boat activated wave generating device for use in a body of water. The wave generating device preferably has wave forming sections that help to create wave shapes and wake formations upon which surfing and/or other skimming maneuvers can be performed. The wave forming secti ...


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John Barella: Contaminant absorbing drainage trough apparatus. Kristar Enterprises, Larry D Johnson, February 24, 1998: US05720574 (72 worldwide citation)

A structure for use with water drainage inlets includes an outside wall portion, a perforated bottom portion, and an inside wall portion. The outside wall, bottom, and inside wall together define a trough for retention of a replaceable filter media. The trough is installed on the inside surface of a ...


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Hisanori Kato, Hiroshi Okamoto: Wave dissipating wall. Nippon Tetrapod, Robert Q Palmer, Flynn & Frishauf, December 7, 1976: US03995434 (70 worldwide citation)

A wave dissipating wall is formed of a plurality of wave chambers comprising a plurality of horizontal plates and vertical partition walls opening toward the direction from which waves come in. The ends of the walls dividing the chambers are wider than the remaining parts of the walls and the front ...


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Desmoulins Robert: Drilling installation for extracting products from underwater sea beds. October 24, 1972: US3700048 (70 worldwide citation)

An installation for extracting products from underwater sea beds comprises a base section which is permanently sunk in the sea bed, a reusable well section, and water-tight flexible connecting means releasably connecting together the base section and well section. The well section has sufficient int ...


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Healy Kent A, Long Richard P: Subterranean wall drain. Research Corporation, April 11, 1972: US3654765 (70 worldwide citation)

A subterranean wall drain unit including a drain pipe having openings therein and a longitudinally extending planar core defining channels normal to the pipe. Water pervious sheet material covering one face of the core and the openings in the pipe to form a filter therefor. The other face of core ma ...


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Humberto Urriola: Underground drainage system. Townsend and Townsend and Crew, September 22, 1998: US05810510 (69 worldwide citation)

An underground drainage system comprising piping and storage tanks (4) made from perforated wall modules (8) to form the desired size and configuration, which is wrapped in a water permeable geotextile (9). The system is preferably buried in clean sand (10 ), whereby rainwater and runoff water is di ...


20
Smith Millard F: Oil collection boom. July 25, 1972: US3679058 (69 worldwide citation)

An oil absorbing boom to be deployed across the effluent stream from a separator or settling basin on the downstream side of oil transfer operations at a seaport for the purposes of collecting and removing from the water thin films of oil such as those which sometimes escape from oil spill booms sur ...



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