Abstract: A gate entry system that includes a gate and a gate drive system mounted to a gate post and including a drive roller and a passive roller is disclosed. In specific implementations of the gate entry system, extension rollers may be removably coupled to one or both of the drive roller and passive roller. Opposing sides of the gate may be in constant direct contact with the drive roller (or any extensions coupled thereto) and the passive roller (or any extensions coupled thereto). Rotation of the drive roller when the gate is between the passive roller and drive roller acts to move the gate in a linear direction. The drive roller may include a shaft coupler and a threaded female coupling opposite the shaft coupler. A threaded male coupling of an extension roller may be threadedly coupled to the drive roller threaded female coupling.

Abstract: Ramp apparatus conveying water across a thoroughfare includes a block having a pair of ramp elements and liquid carrying bores extending through the block. A pair of manifolds are connected to the ends of the block. The apparatus is designed to be disposed across the thoroughfare or roadway, and accordingly has a relatively low profile for ease of traffic problems as traffic moves over the ramp apparatus. At the same time, the apparatus is able to carry a substantial amount of fluid or liquid, such as water, from one side of the thoroughfare to the other side. A plurality of blocks may be secured together to span roadways of any length.

Abstract: A method for regenerating perchloroethylene by passing the fluid through a sorbent resin to remove fatty acids and other organic contaminants which reduce the fluid quality from new fluid quality. The method involves an optional step of treating the fluid with an anionic exchange resin to remove the organic dye contaminants. The key advantage over the prior art is that the process is economical, does not involve evaporative losses as realised in distillation cleaning and is environmentally friendly.

Abstract: Ramp apparatus conveying water across a thoroughfare includes a pair of ramp elements spaced apart from each other with a liquid carrying element disposed between them. The ramp elements and the liquid carrying element are secured together as an integral unit, and coupling elements are disposed in opposite ends of the ramp for coupling to hoses, etc. The apparatus is designed to be disposed across the thoroughfare, and accordingly has a relatively low profile for ease of traffic problems as traffic moves over the ramp apparatus and at the same time is able to carry a substantial amount of fluid or liquid, such as water, from one side of the thoroughfare to the other side.

Abstract: A method of removing contaminated phosphate ester materials is provided. The method involves the use of an anionic resin and a polymeric sorbent. The contaminated phosphate ester material is passed into contact with the anionic resin and optionally the sorbent. The method is particularly useful since it removes substantially all of the contaminants, generally metal material and acids, from the phosphate ester such that the phosphate ester can be reused for further applications.