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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 |
| 4006086 | Apparatus for removal of oil films from water An apparatus in the provision of a number of vertical holes, for separation and rectification of the oil and water, bridging between a barrier or dam section and an associated weir whereby the oil layer is guided into the innermost upper part of a chamber... | 02/01/1977 |
| 4006082 | Process for emergency small spill control A process for the collection of lighter than water pollutant spills to a small boat contained emergency collection sump is disclosed. A floating sump is disposed onto the surface of the water near a spill for the collection of pollutants at a surface disp... | 02/01/1977 |
| 4001114 | Waste water treatment process Waste water feed contaminated with fatty residue and a recycle of froth from a later stage of the process are acidulated; the resulting less dense oil phase is separated from the remaining denser aqueous phase; the pH of the latter then is raised to at le... | 01/04/1977 |
| 3992290 | Method for coalescing oil using a brominated monoolefin resin A method for coalescing oil from an oil in water dispersion by passing the dispersion through a granular bed of brominated monoolefin resin.... | 11/16/1976 |
| 3983034 | Apparatus and method of removing debris floating on a body of water A skimmer for removal of liquid and debris, such as skimming oil spills from water, comprising three pontoons, one located in each of the corners of a triangle made up of interconnecting structural members floating on a body of water. The corner pontoons ... | 09/28/1976 |
| 3980559 | Method and an apparatus for collecting substances and objects on a liquid surface A method and an apparatus for collecting substances and objects floating on a liquid surface, e.g. for collecting oil and oily substances on a water surface. The apparatus performing the method comprises means for separating the upper layer of the liquid ... | 09/14/1976 |
| 3979291 | Oil boom and method of skimming floating oil from the surface of a body of water An oil boom assembly for collecting lighter liquid from the surface of a body of water includes a plurality of elongated, parallel rows of vertical, buoyant, barrier screen members connected together by flexible means and rigidly braced to hold the rows i... | 09/07/1976 |
| 3970556 | Floating skimmer for cleaning the surface of a body of liquid, method and apparatus A floating skimmer, for cleaning the surface of the liquid around the skimmer, has an outer, annular shaped body with an inner cavity. Flotation and ballast chambers in the outer body regulate the level of flotation of the weir, and a peripheral opening a... | 07/20/1976 |
| 3968041 | Apparatus for collecting oil slick from a body of water A system for removing oil slicks from water surfaces such as the ocean, harbors, lakes or ponds. An endless conveyor, for example, the surface of a drum or of a belt, contacts the oil slick, which adheres to it. The slick is conveyed by the conveyor to me... | 07/06/1976 |
| 3966613 | Apparatus for spilling retrieval A catamaran with pivotal fore and aft gates defining a well. When moved through a floating liquid spilling with the fore gate open the well collects spilling. The collected spilling may be pumped directly into a tank. Also, the catamaran is equipped with ... | 06/29/1976 |
| 3966614 | Oil spill cleanup system Skimmer for removing oil from the surface of a body of water which is articulated from front to rear to be wave comformable and/or has a quiescent collection zone formed by bottom and/or forward baffles. Flexible skimming head for use with or independentl... | 06/29/1976 |
| 3966615 | Oil collection barge A device which collects and then contains and concentrates oil spills on the surface of water. This action is affected by the flow of water and oil relative to a channel with an adjustable water and oil intake funnel at the forward end, an oil blockage wa... | 06/29/1976 |
| 3962093 | Apparatus for removing contaminants from the surface of a fluid Oil and other contaminants are removed from a surface of liquid e.g. in a settling tank of an internal combustion engine by a system incorporating a pump for circulating liquid through an annular nozzle disposed above the surface by floats. The nozzle dir... | 06/08/1976 |
| 3959136 | Oil spill cleanup method and apparatus Method and apparatus for removing oil from the surface of a body of water with a skimmer; the apparatus including a skimmer with baffled entry ports arranged on a plane inclined to the direction of current flow or about the periphery of a drum so that oil... | 05/25/1976 |
| 3957646 | Installation for removing pollutants from waterways A floating installation for the recovery of a liquid pollutant, such as petroleum or the like, from navigable waterways, including a main vessel adapted for floating movement in the water. A receiving tank is operably connected to the main vessel, having ... | 05/18/1976 |
| 3951810 | Oil skimmer module with free floating weir trough A skimmer for removal of a layer of oil or other floating pollutants from the surface of a body of water incorporating a sump box having a pump disposed therein for conveying material from the sump box into a floating barge, vessel or other area. A free f... | 04/20/1976 |
| 3951800 | Method of storing sludge recovered from the hot water extraction of bitumen from tar sands An environmentally attractive method for storing sludge containing water, mineral matter, bitumen, and liquid hydrocarbon formed in a retention pond used to store effluent discharge waste streams associated with aqueous extraction of bitumen from tar sand... | 04/20/1976 |
| 3951816 | Clarification tank A clarification tank having a plurality of pick-up trays and a central collection column which is connected to an externally located riser having a high volume discharge weir at the upper end thereof. The tank also includes a plurality of sand pan draw-of... | 04/20/1976 |
| 3947355 | Apparatus and process of separating packing house waste Scraper elements are resiliently and movably supported to alternately, at one stage in the process, pass along a sloped ramp in contact with a container wall to remove surface layers of tallow-like material from water contaminated therewith and, in a subs... | 03/30/1976 |
| 3947360 | Environment protective oil skimming and removal apparatus The present invention relates to apparatus for collecting oil or other floating substances from a water surface, comprising a boat having a holding tank and at least one belt conveyor having its lower end submerged and its upper end in communication with ... | 03/30/1976 |
| 3944489 | Apparatus for pumping oil-water mixture from a collection vessel of a floating oil collector into settling tanks Apparatus for pumping oil-water mixture from the collection vessel of a floating oil collector into settling tanks comprises at least one oil receiving means for collecting oil-water mixture, arranged below the level of the liquid in the collection vessel... | 03/16/1976 |
| 3935103 | Apparatus for separating low-density liquid from a relatively more dense liquid substantially immiscible therewith An apparatus for separating a relatively low density liquid such as oil from a relatively more dense liquid, e.g. water, substantially immiscible therewith, comprises a vessel in which the two liquids form strata, and a trough in the vessel is provided wi... | 01/27/1976 |
