1
Louis E Wagner, Harold F Flannery, Randolph W Rakoczynski: Groundwater protection system. Environmental Design, William H Holt, Michael L Dunn, November 25, 1986: US04624604 (60 worldwide citation)

A groundwater protection system is provided for a surface impoundment or landfill wherein contaminated material is contained in a first compartment. A second compartment is located beneath the first compartment and contains a plurality of treatment materials for acting upon leakage from the first co ...


2
Vahak S Hovnanian: Chemical dump site containment floor. Richard C Woodbridge, December 30, 1986: US04632602 (41 worldwide citation)

The floor under a chemical dump site is formed from a plurality of floor elements sealed with respect to each other by grouting material. Each floor element includes a male rib on one side and a female groove on the other side. The male rib has a dovetail geometry which is complementary to the geome ...


3
Louis E Wagner, Randolph W Rakoczynski, Harold F Flannery: Secure chemical waste landfill. Ecological Professional, Michael L Dunn, February 7, 1984: US04430021 (36 worldwide citation)

A chemical waste landfill comprising a plurality of compartments separated by and lined with a primary clay liner. A single integral synthetic water impervious liner is provided beneath the clay liners of all of the compartments and a primary underdrain system is provided for each compartment beneat ...


4
Mark A Eubank, Michael P Eubank: Flexible leveling device and method of use. Ronald B Sefrna, May 11, 1993: US05209458 (34 worldwide citation)

The present invention discloses a flexible leveling device for the leveling of various vehicles, particularly recreational vehicles. In the preferred embodiment, the flexible leveling device of the invention generally comprises an elongate member of flexible material, with first and second ends, hav ...


5
Paul F Johnston: Trailer leveler. April 11, 1989: US04819910 (34 worldwide citation)

A two piece ramp for drive on leveling of recreational vehicles and trailers. Two interlocking substantially rectangular blocks stacked in horizontal aligned have matching beveled end. The beveled ends slant inwardly in an upwardly direction. The longer base block contains two transverse grooves on ...


6
Keisuke Murakami: Instrument for setting a non-skid chain on a car tire. Haseltine Lake & Waters, August 1, 1978: US04103870 (34 worldwide citation)

An apparatus for setting a non-skid chain on a car tire comprises a bed adapted to be placed on the ground and having a mounting surface for placing the car tire thereon, the mounting surface having a plurality of grooves for putting the chain therein. The bed consists of first and second bed sectio ...


7
Gerald N Chipperfield: Combination wheel ramp and jack. January 5, 1999: US05855359 (33 worldwide citation)

A new combination wheel ramp and jack for raising a wheel and a corresponding part of the vehicle so that access to the underside of the vehicle is more easily achieved. The inventive device includes a lower support base assembly, an upper wheel platform assembly, a scissors assembly connecting the ...


8
Warren J Blatz, David J King, Gordon G Wilson: Multi-tiered system of leveller units. Tri Lynx Corporation, Dykema Gossett, October 17, 1995: US05458315 (30 worldwide citation)

A multi-tiered system of leveller units for the levelling of recreational vehicles. The leveller units each comprise a planar body, with upper and lower surfaces circumscribed by edges. The body of each unit bears a plurality of pins upwardly extending from spaced locations in the upper surface and ...


9
Manuel Torres: Safety vehicle lift. Richard L Huff, April 2, 1996: US05503368 (29 worldwide citation)

A safety vehicle lift comprising a unitary base of a flat rigid construction having parallel side edges and having parallel front and rear edges; a lifting assembly comprising a lower portion secured to the base between the side edges and adjacent to the rear edge, the lifting assembly also includin ...


10
Charles W Cherry, William J Benda: Surface mounted truck leveler. Autoquip Corporation, August 23, 1988: US04765792 (27 worldwide citation)

The leveler is positioned upon the flat top surface of the truck apron at some predetermined position in front of the dock. In the down position the surface cover plate of the leveler is parallel with the flat top surface of the truck apron. The lifting is provided by hydraulic cylinders secured to ...