Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 4279383 | Apparatus for coating by detonation waves The disclosed apparatus includes a detonation chamber constructed in the form of a barrel, a spark plug mounted in the barrel and powder feeding and gaseous mixture delivering systems communicating with the detonation chamber. The powder feeding system in... | 07/21/1981 |
| 4276998 | Meter-controlled braking system for a fluid-delivering vehicle A system is provided for preventing movement of a fluid-delivering vehicle during transfer of fluid such as fuel oil from said vehicle. The system utilizes a modified conventional recording meter assembly to alter the flow of electrical current in an elec... | 07/07/1981 |
| 4275822 | Apparatus for metering at least two reaction components into a mixing chamber The instant invention relates to an apparatus for metering at least two flowable reaction components, such as polyurethane-forming components, in a predetermined ratio into a mixing chamber. The apparatus broadly comprises a metering unit for each compone... | 06/30/1981 |
| 4245758 | Method and apparatus for measuring molten metal stream flow A plurality of arcuately spaced transceivers for emitting and receiving radiation waves are positioned in a plane transverse to a molten metal stream. Each transceiver emits a radiation wave which is directed toward and reflected from the stream and the r... | 01/20/1981 |
| 4244403 | Apparatus for transferring liquid between a reservoir and a mobile tank truck Liquid is transferred between a reservoir and a truck tank by means of a pump which pumps the liquid through a conduit leading to the tank and separably couples to the reservoir. An air opened, normally mechanically closed valve connecting the tank with t... | 01/13/1981 |
| 4228923 | Ice maker dispenser structure An ice maker dispenser structure wherein a removable chute is provided as a portion of a discharge duct leading from a discharge opening in a collecting bin for storing a plurality of discrete ice bodies to be dispensed. An agitator is disposed within the... | 10/21/1980 |
| 4224281 | Dosaging device for liquid media A multiple liquid metering device of the type used in liquid analysis assemblies includes a valve block having an intermediate liquids storage vessel and a moving piston measurement burette. The valve block is provided with a plurality of inlet and outlet... | 09/23/1980 |
| 4222506 | Molten steel outflow automatically controlling device A molten steel outflow automatically controlling device comprising an infrared ray camera for detecting infrared rays emitted by a molten steel stream and slag flowing down out of a molten steel vessel such as a ladle or converter, a color monitor for con... | 09/16/1980 |
| 4175677 | Self-contained actuation and detection device A double ended piston assembly is maintained in a cocked position in a stepped piston chamber under the influence of pressurized sensor gas. Loss of pressure results in the pistons being driven to an actuating position wherein a puncture element carried t... | 11/27/1979 |
| 4144986 | Hot melt adhesive pumping apparatus having pressure-sensitive feedback control A high-capacity pumping apparatus for handling thermoplastic materials such as hot melt adhesives is provided which is capable of safely and efficiently pumping materials heretofore thought to be impractical because of the high flow and melting points the... | 03/20/1979 |
| 4131216 | Leak detection system and method for fluid delivery piping A system and method for detecting leaks in an underground piping network supplying liquid petroleum products pumped from an underground storage tank to an aboveground dispenser outlet. A highly sensitive flow detector situated in a parallel looped bypass ... | 12/26/1978 |
| 4121646 | Method and apparatus for making molds A program controlled customized method for making molds comprises the steps of dispensing a layer of molding material including a mixture of sand and binder over a mold forming pattern by means of relative movement between a dispensing device and the patt... | 10/24/1978 |
| 4094318 | Electronic control means for a plurality of intravenous infusion sets Electronic control apparatus for controlling the administration of a plurality of separate fluids independently and consecutively, includes electrical circuitry connected with a plurality of valve operators to operate valves in a plurality of sets to cont... | 06/13/1978 |
| 4090640 | Hot melt adhesive pumping apparatus having pressure-sensitive feedback control A high-capacity pumping apparatus for handling thermoplastic materials such as hot melt adhesives is provided which is capable of safely and efficiently pumping materials heretofore thought to be impractical because of the high flow and melting points the... | 05/23/1978 |
| 4076146 | Dishwashers and detergent dispensers A sensing and dispensing system for dispensing a first liquid to a reservoir, the dispenser comprising a pumping device having an inlet adapted to receive said liquid and an outlet adapted to be placed in communication with the reservoir and a control mec... | 02/28/1978 |
| 4075301 | Method and apparatus for depositing material into a moving receptacle A method and apparatus of depositing material into a moving receptacle is disclosed. A traveling discharge device moves across a receptacle while discharging material into the receptacle. The discharge device uses the receptacle itself as its frame of ref... | 02/21/1978 |
| 4068781 | Hot and cold beverage vendor A vendor for hot and cold beverages having a hot water tank for supplying hot water for hot beverages (e.g., coffee, tea, soup, chocolate), an electrical heater for heating water in the tank, a carbonator for supplying carbonated water for cold carbonated... | 01/17/1978 |
| 4063663 | Powdered detergent dispenser A non-hazardous dispenser apparatus for converting powdered detergent, including those containing active chlorine, into a concentrated detergent solution for use by a washing machine. A curved screen member retainably supports a mass of powdered detergent... | 12/20/1977 |
| 4056470 | Automatic chlorinator An automatic chlorinator for a swimming pool having a water circulating system. The chlorinator automatically draws a sample of pool water at regular intervals and compares the level of the residual chlorine in the sample with a predetermined desired leve... | 11/01/1977 |
| 4041995 | Gas pressure-activated drop dispenser Apparatus and a process for drop-by-drop metering of fluids, especially biological fluids such as blood serum, wherein a removable container having a drop-forming platform is pressurized by apparatus not requiring apparatus contact with the fluid other th... | 08/16/1977 |
| 4038982 | Electrically controlled intravenous infusion set An electronically controlled intravenous infusion set of the gravity feed type having a flow path including a drip chamber and an internal valve for regulating flow through the set. Electromagnetic valve operating structure, positioned outside the IV set,... | 08/02/1977 |
| 4019653 | Automatic proportioning paint spray system Apparatus is disclosed for spraying paints wherein the paint comprises a predetermined ratio mixture of at least two components, and wherein the ratio of these components is controlled automatically as they are delivered to a spray gun and prior to mixing... | 04/26/1977 |
| 3999687 | Toner concentration detector A toner concentration detecting and toner replenishing system for use in an electrostatic copier having a magnetic brush which carries dry developer comprising a mixture of ferromagnetic carrier particles and toner particles into contact with the surface ... | 12/28/1976 |
| 3997081 | Apparatus for controlling the operation of a package filling device An apparatus for controlling the operation of a package filling device, comprises a cylinder which has inlet and outlet means for the intake and discharge of a filling material into a package to be filled. A clamp piece is secured to a piston rod which is... | 12/14/1976 |
| 3978987 | Cutting of a stream of tobacco into measured weight portions Method and apparatus for dispensing particulate material in portions of predetermined weight by providing a flow of material measurable by a radiation detector, measuring the flow rate per unit time of the material and removing successive determined porti... | 09/07/1976 |
| 3974940 | Method and apparatus for controlling the discharge of contaminants from ships A system is provided for monitoring fluid discharged from ships and for determining the amount of contaminants, such as oil, in the fluid. The discharge from the ship is continuously monitored by a meter which will indicate the oil content of the discharg... | 08/17/1976 |
| 3941280 | Apparatus for controlling developer efficiency Apparatus for controlling developer efficiency in an electrostatic copying machine. A thin film of semi-insulating material is positioned for advancement through a development zone indicative of the quality of a developer system. Positioned in the path of... | 03/02/1976 |
| 3940020 | Leak detection system and method A leak detection system and method of detecting leaks are disclosed for detecting leaks in a dispensing system having a pump, dispenser, conduit connecting the pump and dispenser and a valve to isolate the pump from the dispenser when a fluid is not being... | 02/24/1976 |
