31
James M Nichols, Randall C May: Leaching system conduit. Infiltrator Systems, C G Nessler, July 26, 1988: US04759661 (62 worldwide citation)

A thermoplastic device for leaching sewage system effluent into the earth has the shape of an inverted trough. Its sidewalls have slot shaped perforations; above each slot is a lip; beneath each slot is one or more protuberances, preferably rectanguloid in shape. The combination of lips and protuber ...


32
David G Kroger: Dike assembly. Magnum Fiberglass Products, Oldham & Oldham, August 23, 1988: US04765775 (59 worldwide citation)

An environment protecting dike assembly is disclosed comprising interlocking, plastic, wall shaped components which can be erected as a dike wall around storage tanks or other liquid containing vessels. The components of the assembly are of modular construction, permitting dikes of different configu ...


33
Gregory E Granato, Kirk P Smith: Automated groundwater monitoring system and method. The United States of America represented by the Secretary of the Interior, E Philip Koltos, February 8, 2000: US06021664 (58 worldwide citation)

A method of monitoring the quality of water at a ground water sampling site without human intervention. Water at the sampling site is purged until at least one preselected purge criterion is satisfied. At least one water quality attribute is automatically measured at the sampling site, and the quali ...


34
S Karl Suksumake: Apparatus and method for moving rig structures. Pool Company, Crutsinger & Booth, February 20, 1996: US05492436 (58 worldwide citation)

Disclosed is an improved apparatus and method of moving a large, heavy structure or piece of machinery, such as an oil rig structure on an offshore platform. A plurality of load bearing plates are provided for supporting the structure. Each of the load bearing plates rides upon a plurality of roller ...


35
Robert J DiTullio: Drainage system. Ware Fressola et al, February 11, 1992: US05087151 (58 worldwide citation)

In septic systems for handling household waste water or in clear water drainage applications, lightweight molded polyethylene galleries are used to form the drain field. The galleries can be axially aligned in end-to-end relationship with each gallery defining an interior hollow chamber. A unique la ...


36
Robert T Bayer: Flood water containment bag. American Threshold, Harvey B Jacobson, March 17, 1987: US04650368 (58 worldwide citation)

A flood water containment bag constructed of lightweight, inexpensive porous material with a quantity of water absorbent material therein which increases substantially in volume and weight when it absorbs water entering into the interior of the bag. The bag can be easily and quickly transported to a ...


37
Robert W Symons: Boat ride for amusement park. Sid & Marty Krofft Productions, Lindenberg Freilich Wasserman Rosen & Fernandez, January 6, 1976: US03930450 (58 worldwide citation)

A boat ride system for an amusement park, which includes a main channel and an auxiliary channel extending under the main channel and isolated from it except along a narrow slot. A boat for carrying people includes a hull floating in the main channel, a pair of paddles lying in the auxiliary channel ...


38
Roehner Soll: Helix of a series of discarded vehicle tires. Schofer Harry N, December 23, 1975: US3928701 (58 worldwide citation)

An article of manufacture consisting of a structure in form of a helix and/or a spiral made from a series of discarded vehicle tires. The tire annulus is transversely severed, and the end of one tire is secured to the end of another tire, in series, in the form of a helix and/or a spiral. Such a str ...


39
Randall J Houck, Michael H Houck, Harold J Houck: Method and apparatus for installation of drainage field. Duckworth Allen Dyer & Doppelt, May 14, 1991: US05015123 (57 worldwide citation)

A preassembled unit for a sewage nitrification field has minimum outward dimensions of loose, lightweight plastic aggregate material enveloped and bound by a plastic sleeve around a horizontal conduit. In one embodiment, the unit takes a bag form with an aggregate-filled netting sleeve concentricall ...


40
James L Fouss, John J Parker, James L Child Jr, Donald W Sting: Multi-layered corrugated conduit with "black-eye" like apertures. Hancor, Fay Sharpe Fagan Minnich & McKee, June 18, 1985: US04523613 (57 worldwide citation)

The conduit includes a top wall (A) and a base (B). The top wall A has an apex area (10) which is connected with a first corrugated side wall (12) and a second corrugated side wall (32). The side walls having alternating peaks (22, 42) and valleys (24, 44). The peaks have apex ends (26, 46) which ar ...



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