Leslie P S Wilson: Reverse osmosis liquid purification apparatus. Sykes Ocean Water, Mawhinney & Mawhinney & Connors, January 4, 1983: US04367140 (103 worldwide citation)

In apparatus for the reverse osmosis purification of water or other fluid in a module containing a membrane, the water is forced into the module under pressure using two piston-cylinder assemblies mechanically interconnected with the pressurized fluid from the module applied to the rear face of the ...

Leslie P S Wilson: Water purification by reverse osmosis. Ocean Water, Mawhinney & Mawhinney & Connors, November 7, 1978: US04124488 (44 worldwide citation)

Apparatus for reverse osmosis purification of water or other fluid by passing the fluid under pressure across a membrane, through which membrane a part of the fluid passes in purified form, makes use of a piston or diaphragm pump in which the front face of the piston or diaphragm is used to force th ...

Leslie P S Wilson, David Anderson, David M Raffo: Can opener. Prestige Group, Larson and Taylor, March 8, 1994: US05291658 (12 worldwide citation)

A can opener includes a pair of pivoted handle members (101), (102), associated with a drive wheel (108) and a cutting wheel (111), which are brought into a position to nip the rim of a can when the handles are closed. The nip on the can is not lost when the handle members are partially opened to an ...