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| Number | Title | Issue Date |
| 6180307 | Layered polymer particles, toner formed therefrom and methods for forming the same A layered particle for use in forming toner may be formed by forming a core region; polymerizing in the presence of the core region at least one monomer feed to form at least one intermediate layer on the core region; and polymerizing in the presence of t... | 01/30/2001 |
| 4830040 | Automatic swimming pool cover drainer A float controlled siphon discharge valve mechanism operates to drain water from a swimming pool cover, and includes a lever arm attached at one end to a hinge and having a float on the other end so that the lever is of the second or third type. A closure... | 05/16/1989 |
| 4625752 | Flushing siphon A siphon is provided having a generally S-shaped configuration with a widely flaring inlet and discharge. The siphon is adapted for use with a fluid storage tank which is positioned adjacent a trough to be flushed by the siphon. The siphon discharge opens... | 12/02/1986 |
| 4586527 | Gas-plug type valve A gas-plug type valve has a capillary pipe for introduction of pneumatic starting control signals, a further pipe for introduction of pneumatic locking control signals, and a through-flow pipe connected with these pipes and having four straight sections a... | 05/06/1986 |
| 4480655 | Liquid-plug-creating device A liquid-plug-creating device includes a collection tank or basin into which liquid flows such as the outflow from sanitary appliances. From the outlet at the bottom of the tank a riser extends upwardly at an acute angle to the horizontal. At the opposite... | 11/06/1984 |
| 4254934 | Hydraulic syphon with pneumatic reflux Hydraulic syphon with automatic reflux, working in tanks disposed at whichever height from the discharge point, particularly for the discharge of the tanks for the flushing of water closets. Two cylindrical tubular elements are disposed, in a position reciproc... | 03/10/1981 |
| 3972966 | Apparatus for producing pulsed liquid flow in a distillation column Apparatus for pulsing the flow of the liquid between the trays of a distillation column with only a small change in liquid level. In the preferred embodiment, a dome-like capping plate is mounted over the upper end of a downcomer conduit and overlaps the ... | 08/03/1976 |
