Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4285601 | Drilling mud mixer A generally cylindrical mixing tank for oil well drilling mud circulates the mud passing out of a set of urethane nozzles about an elliptical path in the tank, which is coated internally with urethane thereby to provide a long lasting mixer in the presenc... | 08/25/1981 |
| 4279516 | Container for pasteurizing sludge A vertically standing, slender, cylindrical flow container with an upper intake connection for crushed raw sludge already heated to a pasteurization temperature and a lower outlet connection for pasteurized sludge. A slowly rotating guide member is incorp... | 07/21/1981 |
| 4231665 | Filter aid dispensing arrangement The present invention discloses a new and useful filter aid dispensing arrangement for use in dispensing a powdered filter aid to uniformly precoat a filter media in a liquid filtration device where the arrangement includes: a container having a sidewall ... | 11/04/1980 |
| 4140299 | Mixing liquids Mixing of liquids by passing through space delineated by body of revolution and surrounding co-operating casing in relative rotation, the co-operating surface of rotating part having plurality of grooves at angle less than 80° to its axis and one liquid ... | 02/20/1979 |
| 4135870 | Machine for producing additive containing plastic articles Plastic articles are made wherein an additive is introduced downstream of an injector.... | 01/23/1979 |
| 4097026 | Apparatus for mixing a basic liquid substance with other media A baffle transforms a pressure stream of basic liquid into an annular flow with a hollow core, filled with another medium. By increasing the pressure in the discharge part of the mixer the liquid and the medium are thoroughly mixed and the mixture introdu... | 06/27/1978 |
| 4094643 | Ammonium nitrate neutralizer A thermal syphon-pressure pump neutralizer for neutralizing nitric acid with ammonia, comprising a reaction vessel for containing an aqueous reaction medium and having a gas outlet in its upper end and a product outlet spaced therebelow, a fluid imperviou... | 06/13/1978 |
| 4014527 | Chemical blending system This specification discloses a system and method for blending a dry chemical and a liquid. The system is comprised of a hopper for receiving and feeding the dry chemical into a pipe where it is transported by gas to a liquid weir and there mixed with the ... | 03/29/1977 |
| 4014526 | Liquid moving and mixing apparatus A liquid moving and mixing apparatus is selectively submersible in a body of liquid and is operative to effect a turbulent flow of the liquid upwardly and then outwardly and then downwardly and to mix a selected material into the body of liquid during the... | 03/29/1977 |
| 4008580 | Initial quick freeze pan for direct refrigerant contact cooler The initial quick freeze (IQF) pan includes a horizontal baffle plate about which liquid freezant is recirculated continuously in a flow path having a lower reversely directed portion, a semi-circular intermediate portion, and an upper forwardly directed ... | 02/22/1977 |
| 3963513 | Process and apparatus for treatment of cane sugar juice Method and apparatus for controlled growth of precipitates in systems requiring separation of undesirable contaminants from a solution prior to treatment with a coagulant aid. Cane sugar juice, as exemplary, is introduced at an elevated temperature into a... | 06/15/1976 |
