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| Number | Title | Issue Date |
| D495073 | Miniature flashlight | 08/24/2004 |
| 4254794 | Valve for self-maintaining poultry waterer In a poultry watering system having a float-controlled valve for maintaining a desired water level in a trough, leakage through the valve from an overhead supply line, which may occur when the water supply is cut off is effectively prevented without reduc... | 03/10/1981 |
| 4251367 | Wastewater treatment Improved clarity in treated wastewater is achieved by adding a flocculating agent following screening by fine mesh screening means, preferably a centrifugal screen separator. The effectiveness of the separator is improved, in turn, by preceding it in the ... | 02/17/1981 |
| 4242970 | Free-standing article support unit A free-standing shelf support of prefabricated components particularly suited for convenient store or supermarket displays is disclosed. The unit includes two sections each comprising a pair of vertically-disposed uprights mounting therebetween a panel as... | 01/06/1981 |
| 4239099 | Automatic forward-feed shelf In a gravity-feed shelf having an endless flexible conveyor belt supporting a plurality of articles arranged in a column and automatically feeding the articles in said column forward in a columnwise direction when the foremost article in the column is rem... | 12/16/1980 |
| 4238902 | Animal trap Simplified molding of a disposable plastic mousetrap is achieved by providing an elongated box and a triggerable closure hinged to the box along a hinge axis parallel to the direction of elongation. Shield means prevent access to the trigger from the exte... | 12/16/1980 |
| 4238022 | Automatic forward-feed shelf In a gravity-feed shelf having an endless flexible conveyor belt supporting a plurality of articles arranged in a column and automatically feeding the articles in said column forward in a columnwise direction when the foremost article in the column is rem... | 12/09/1980 |
| 4233350 | Formaminous sheet A foraminous sheet having properties similar to those of a sheet formed by perforation is made by arranging filaments in overlying groups to produce a non-woven mesh, and applying pressure to the overlying groups so that the intersections of the filaments... | 11/11/1980 |
| 4226027 | Material feed system for jet mills and flash dryers The expenditure of energy required to feed solid material into a jet mill or flash dryer is significantly reduced by the use of a novel feed system in which a blower, operating at a pressure slightly higher than the pressure within the jet mill or flash d... | 10/07/1980 |
| 4222585 | Folding cart A folding cart comprising a fabric body and a collapsible tubular frame comprises tubular members extending longitudinally underneath the bottom of the fabric body for supporting the load and preventing the formation of pockets which impede unloading. Whe... | 09/16/1980 |
| 4214375 | Flash dryer In a closed-loop flash dryer, hot gas is introduced through a horizontal or downwardly directed nozzle. This configuration is especially adapted for drying heat-sensitive materials. The use of a single nozzle eliminates damage to equipment which results f... | 07/29/1980 |
| 4206030 | Electrode assembly An improved electrode assembly for use in electrolytic flotation for wastewater treatment comprises a series of overlying layers of foraminous mesh arranged in substantially horizontal planes, wherein electrically conductive mesh layers constituting the a... | 06/03/1980 |
| 4204480 | Shelving system In a shelving system having both vertical and oblique supports for removable shelves, identical shelves are interchangeably usable on either support by virtue of special tabs which are engageable with support slots in two possible ways. The same shelf, th... | 05/27/1980 |
| 4201139 | Shelving system In a sheet metal shelving system, shelf clips for retaining shelves on support posts are provided with hooks for engaging openings in the support posts and also with projections which enter openings and prevent removal of the clips from the posts. The pro... | 05/06/1980 |
| 4198004 | Jet mill Significant improvement in the sharpness with which particles are classified by size in a recirculating jet mill is achieved by the provision of an elongated, flexible barrier strip located adjacent the outermost part of the wall of the classifier section... | 04/15/1980 |
| 4197816 | Multi-purpose human harness A harness of nylon webbing or similar material consists of a belt having a ring at one end and a snap hook at the other end, a short length of webbing is secured to the belt at an intermediate portion thereof offset toward the end having the ring. A secon... | 04/15/1980 |
| 4195430 | Display with movable indicia A support for use in conjunction with self-coiling indicia-carrying sheets in a movable indicia display utilizes two identical backing members, and two identical end members, a total of only four parts. Sheet metal is used, and roll retainers are integral... | 04/01/1980 |
| 4187862 | Treatment of cigarette paper Cigarette paper is treated by one or the other of two alternative processes. The first alternative process is characterized by the step of coating between 40 and 100% of the surface area of the paper with an aqueous alkali metal silicate solution, the SiO... | 02/12/1980 |
| 4159897 | Producing fluid fuel from coal In a coal liquefaction system, product B.T.U./hr. can be significantly increased by dividing the coal to be treated into two portions, liquefying one portion, and adding the other portion to the product of the liquefaction process to produce a suspension ... | 07/03/1979 |
| 4157876 | Lockable articulated joint This orthopedic appliance for correcting a wide variety of lower extremity deformities comprises: a bar which is scored so that it can be broken to provide a bar of a desired length; lockable articulated joints at both ends of the bar; releasable clips fo... | 06/12/1979 |
| 4149688 | Lifting body aircraft for V/STOL service An unexpectedly high augmentation of aerodynamic lift for a given amount of power in STOL operation of a V/STOL aircraft is achieved by combining the unique features of a lifting body with those of a "jet flap", i.e. an aerodynamic mechanism in which a sl... | 04/17/1979 |
| 4146264 | Load control for wind-driven electric generators In a wind-driven generator system, the generator load curve is matched to the wind-driven rotor characteristic by an electronic field current control which is responsive to the rotor speed. A tachometer circuit produces pulses the repetition rate of which... | 03/27/1979 |
| 4142320 | Animal trap and trapping method A disposable mousetrap comprises an elongated plastic housing having an air-tight swinging door biased toward its closed condition by a rubber band. An articulated arm extends from the door to the floor of the housing and then to a detent located near the... | 03/06/1979 |
| 4136770 | Safety matchbook and matches A match which is difficult for young children to ignite utilizes a protective coating on the tip of a match head which prevents ignition of the sulfur and potassium chlorate-containing mixture when an attempt is made to strike the match in the usual manne... | 01/30/1979 |
| 4134638 | Low obscuration spider for supporting optical element In a reflecting telescope, a diagonal mirror is supported by a spider comprising four thin flexible metal vanes secured to a mirror carrier by axially slotted pins which are rotatable for adjusting vane tension. These vanes provide an extremely stable mir... | 01/16/1979 |
| 4129278 | Tripod A stable tripod for an optical telescope comprises a head having an inwardly facing circular side wall, three legs, each having a shoe located at its upper end adapted to engage and push outwardly against the circular wall and having a lower end for engag... | 12/12/1978 |
| 4126725 | High pressure laminates Dimensional stability of melamine decorative laminates is improved by a pair of spaced, foraminous steel foil layers, which resist shrinkage of the melamine layer. Steel foil layers are also used to prevent splitting of low-strength wallboard cores as a r... | 11/21/1978 |
| 4125190 | Child-resistant blister package A foil-backed blister sheet is sandwiched between upper and lower sheets formed by folding a single die-cut card having a heat-sealable adhesive coating on one side. Blisters project through holes in the upper sheet, and the blister contents are removed b... | 11/14/1978 |
| 4110980 | Apparatus for producing mechanical kinetic energy from falling water Agitation of the surface of a body of water by a falling stream of water results in the entrainment of air bubbles which are carried underneath the surface. These air bubbles are collected in a tank having a submerged open bottom. Air pressure is produced... | 09/05/1978 |
| 4046686 | Reverse osmosis treatment of battery waste Reverse osmosis is made usable for removal of heavy metals from acid battery waste by a process in which dissolved calcium sulphate, produced by neutralization with lime, is sequestered by sodium hexametaphosphate before introduction into the permeator. T... | 09/06/1977 |
| 4039443 | Condensate purification process A method of treatment of condensate water by a mixed bed of ion exchange resins, the method being characterized by the following procedure; in regenerating the charged resins, after passing the condensate water through the mixed bed of ion exchange resins... | 08/02/1977 |
