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| Number | Title | Issue Date |
| 4232671 | Safety eyewash package and container therefor A safety eyewash has an eyewash liquid in a container that has two flexible plastic sheets that are sealed around the bottom and end margins and are sealed at the top margin after the liquid is placed in the container. One of the sheets has two sets of ho... | 11/11/1980 |
| 4216554 | Automatic freeze-proof drain system A system to protect piping and containers from damage by freezing of contained aqueous liquid includes a temperature-actuated SPDT switch connected at its movable contact to a rechargable battery. The fixed contacts of the switch are connected to two inpu... | 08/12/1980 |
| 4180051 | Furnace The furnace for burning wood or coal has a cabinet with a front wall and interconnected spaces between the inner and outer walls at the sides, top, bottom and rear. One of two outer walls have an inlet and outlet for flow of air to be heated. There are al... | 12/25/1979 |
| 4134464 | In-motion car weighing system A system for bidirectional in-motion weighing of freight cars of a train includes a weighbridge, first and second sets of load cells, three wheel sensing devices, a control device, a device initiated by the control device for weighing operations, and a pr... | 01/16/1979 |
| 4126040 | Liquid level gauge A liquid level gauge for a tank, especially a pressurized railway tank car, has a housing with a bottom opening mounted at a top opening of the tank. A horizontal shaft is rotatably mounted in the housing between opposed walls having parallel flat vertica... | 11/21/1978 |
| 4089225 | System for residual tire life prediction by ultrasound A system, preferably a pulse echo reflection system, for residual tire life prediction by ultrasound includes: a transmitter transducer; means to provide pulses of electrical energy to the transmitter transducer, that converts the electrical pulses into p... | 05/16/1978 |
| 4089226 | System for residual tire life prediction by ultrasound A residual tire life prediction system uses a clock to trigger a bang generator that provides pulses of electrical energy to a pulse-echo transducer. The transducer converts pulses of electrical energy to pulses of ultrasonic vibration. The transducer is ... | 05/16/1978 |
| 4040510 | Stamp vending machine A stamp vending machine has a number of stamp dispensing mechanisms. Each mechanism is capable of dispensing one or more stamps of the same denomination. The machine can dispense from one mechanism different numbers of stamps and from a number of differen... | 08/09/1977 |
| 4033494 | Stamp dispensing mechanism A stamp dispensing mechanism has a cylindrical feed wheel, with axially-parallel rows of projections, rotatably mounted on a front portion of a vertical support plate that is constructed to rotatably support a roll of stamps on its rear portion. A Geneva ... | 07/05/1977 |
| 4024522 | Acoustic emission system for welding flaw detection A system for flaw detection during a continuous welding process uses a transducer to provide a signal burst for each acoustic burst from an article being welded. The signal burst is amplified and filtered to pass frequencies between about 100 and about 55... | 05/17/1977 |
| 4012322 | Macerator-sterilizer sewage treatment system The macerator-sterilizer sewage treatment system, that is useful in an overall toilet system to collect, treat and discharge toilet wastes, comprises: macerator/transfer pump means to receive flushed human waste from toilets and urinals; a collection tank... | 03/15/1977 |
| 3974075 | Toilet system The toilet system includes an evaporator tank having an inlet and an outlet that is at the top portion of the tank, a first electrical heater mounted on the tank, macerator/transfer pump means connected to the inlet of the tank to transfer flushed waste f... | 08/10/1976 |
| 3959636 | Batching system A batching system for operating each cycle of a batching process includes a communications bus to which are connected a basic processor, a control console, an analog/digital converter module, and an interface unit. The basic processor includes RAM memory ... | 05/25/1976 |
| 3931768 | Hopper vehicle A novel hopper vehicle, illustratively a freight hopper car, has a floor with two longitudinal hoppers and a pair of side-opening doors on opposite sides of the center line of the vehicle. Each door provides a part of one of the hoppers and is pivotally m... | 01/13/1976 |
| 3931860 | Low-profile platform scale A low-profile platform scale has a horizontal base, a lower primary U-shaped lever, an upper secondary U-shaped lever, a horizontal platform, and load cell means mounted on the base. The base has a unitary structure including a front pair and a rear pair ... | 01/13/1976 |
