Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 4962768 | Stirrup-lock ankle support A reusable ankle support for providing support to the ankle region comprises a socklike elastic sheath with a pair of crossed elongated elastic straps attached thereto. After the sheath is positioned on the foot of the wearer, the straps are wrapped aroun... | 10/16/1990 |
| 4962574 | Plural display casket A plural display burial casket utilizes two substantially equal top portions which are hingedly attached to opposed sides of a casket body. The top portions utilize quick release mechanisms which allow the top portion acting as the unselected foot end of ... | 10/16/1990 |
| 4959528 | Electrically heated vessel and base unit for use in a motor vehicle A portable, self heating, container assembly for use in a motor vehicle includes an electrically heated double-walled insulated vessel having a lower end portion telescopically, rotatably and removably received in a tubular socket of a separate base unit.... | 09/25/1990 |
| 4938867 | Configuration of aeration chamber for an activated-sludge sewage treatment system A configuration of an aeration chamber for an activated-sludge treatment plant includes an elongated, hydraulic plug-flow aeration chamber with a floor having a sloped portion and a level portion. The level portion, which acts as a collection area for the... | 07/03/1990 |
| 4928910 | Detection of overheated railroad wheel and axle components Overheated railroad journal bearings, wheels, and wheel components on a moving or stationary railroad train are detected by amplifying the current signal from an infrared radiation sensor comprising a pyroelectric cell. A reference temperature is sensed b... | 05/29/1990 |
| 4922771 | Brake adjusting tool A new method and an apparatus for manually rotating the adjusting screw mechanism or star wheel of a vehicle wheel brake is adapted to displace the pawl of the brake adjusting mechanism and disengage it from the star wheel, thereby allowing rotation of th... | 05/08/1990 |
| 4915829 | Activated-sludge aeration system An activated-sludge sewage treatment plant includes an aeration chamber having at least two aeration sections and an intermediate sludge scalper device. The sludge scalper device is positioned to receive the effluent of a primary aeration section the effl... | 04/10/1990 |
| 4908177 | Field marking of electrical wiring An apparatus for the marking of wires and the like comprises a preparation board consisting of a base portion and a neck portion, the neck portion having an extension piece thereon with a plurality of spaced, essentially flat tabs extending therefrom. Fle... | 03/13/1990 |
| 4881947 | High efficiency gasifier with recycle system A high efficiency gasifier employs a rotary kiln having an indirect fired gasifier and a recycle system. The rotary kiln provides an essentially oxygen-free gasifying chamber into which raw feed material is introduced. Radiant tubes within the chamber tra... | 11/21/1989 |
| 4873781 | Hidden hook artificial lure AN artificial fishing lure having hidden hooks recessed within the body thereof to prevent snagging on weeds, rocks or the like when the lure is moved through the water. A trigger is provided and is attached at one end to a fishing line, and at a second e... | 10/17/1989 |
