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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 7108769 | Solar distillation loop A solar distillation loop apparatus includes a first pipe section disposed on a ground surface, the first pipe section including a substantially straight portion and elevated portions on each end of the substantially straight portion, an impure water inflow coupling... | 09/19/2006 |
| 6290819 | Distillation apparatus A continuous-flow water distiller includes a housing having a removable heating vessel which receives water to be distilled A heater is immersed within the water in the vessel for producing steam. The housing includes an openable lid which, when closed, s... | 09/18/2001 |
| 6030504 | Control circuit for water distiller A distiller control circuit includes a power bus with first and second lines and a fan circuit connected across the lines and having a fan motor and a fan thermostat in series. There is also a heater circuit connected across the lines and having a heater ... | 02/29/2000 |
| 6010599 | Compact vacuum distillation device An apparatus for batch distilling a liquid at sub-atmospheric pressure, without the aid of a vacuum pump. The apparatus includes an evaporator section having a valved entry port through which a batch of liquid in a first atmospheric condition is added to ... | 01/04/2000 |
| 5932073 | Distillation apparatus A water distiller incorporates a removable vessel for containing water, a heat source disposed below the removable vessel for heating the water to produce steam, a condenser for condensing the steam into distilled water, and an outlet from the condenser f... | 08/03/1999 |
| 5419814 | Thin layer liquid film type evaporator A thin layer liquid film type evaporator including a cylindrical heating column, a heater for heating the cylindrical heating column, a liquid film forming plate disposed in the cylindrical heating column, a baffle also disposed in the cylindrical heating... | 05/30/1995 |
| 5178734 | Water distilling apparatus with vertically stacked components A water distilling apparatus (10) which includes vertically stacked components, i.e. an uppermost water storage tank (12), an intermediate boiling tank (14) and a lowermost condensing unit (16). Stacking of the distiller components creates a space efficie... | 01/12/1993 |
| 5173155 | Vacuum boiler type evaporator A vacuum boiler evaporator includes a sealed vacuum boiler vessel, a sealed vacuum condenser vessel which contains a partition that divides it into a first chamber and a second chamber that functions as a noncondensible gas collector, a conduit which conn... | 12/22/1992 |
| 4882012 | Water distiller A water distiller includes an inner vessel in which source water is heated, an outer dome or housing on the inner surface of which the vapor from the inner vessel is condensed and a reservoir for receiving the condensate. The inner vessel includes a closu... | 11/21/1989 |
| 4698135 | Desalinating drip-irrigation system A system is provided for use adjacent a plant supporting material to be irrigated, for converting salt water into fresh water and dispensing the fresh water dripwise to the plant supporting material. The system comprises an evaporator member made of micro... | 10/06/1987 |
| 4693786 | Non-electrical solvent recovery distillation apparatus A portable solvent recovery distillation apparatus for improved on-site recovery of highly flammable solvent from a batch of spent solvent. Both evaporation of the spent solvent and condensation of the purified solvent vapors are conducted within a common... | 09/15/1987 |
| 4612090 | Water degasification and distillation apparatus Water degasification and distillation apparatus having a container for water to be degasified and distilled, a relatively small boiler adjoining said container and having a first conduit extending into the container so that a selected water level in the c... | 09/16/1986 |
| 4420374 | Water degasification and distillation apparatus Water degasification and distillation apparatus having a container for water to be degasified and distilled, a relatively small boiler adjoining said container and having a first conduit extending into the container so that a selected water level in the c... | 12/13/1983 |
| 4407488 | Distillation and sublimation apparatus comprising a condenser The invention relates to a distillation and sublimation apparatus having a receiving vessel and a number of containers for the starting product. Each container has a bottom, an outer wall and an inner wall with a vapor duct, and the containers are stacked... | 10/04/1983 |
| 4107000 | Solar still There is described a solar still comprising a pair of juxtaposed corrugated sheets which in a preferred embodiment are positioned at an angle to one another whereby the upper sheet rests on the raised portions of the lower sheet. A thermally insulating, s... | 08/15/1978 |
