Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4893722 | Compartmented waste receptacle A compartmented waste receptacle for segregating different types of waste, such as cans, paper, g=lass containers and the like. The receptacle has an upper compartment and a pair of lower compartments which are interconnected by two tubular chutes. The tu... | 01/16/1990 |
| 4868653 | Adaptive digital video compression system A full motion color digital video signal is compressed, formatted for transmission, recorded on compact disc media and decoded at conventional video frame rates. During compression, regions of a frame are individually analyzed to select optimum fill codin... | 09/19/1989 |
| 4850512 | Blade holder and automatic dispenser A holder and dispenser for knife blades which includes a sliding partition biased toward a discharge opening by rubber bands in a double loop configuration. The double looped configuration orients the rubber bands which loop around the back of the holder,... | 07/25/1989 |
| 4846453 | Knock-down type workbench A knock-down type workbench including a three piece support structure assembly which may be assembled in rigid form entirely without the use of nails, screws or other fastening means. The knock-down workbench includes a plurality of table tops which have ... | 07/11/1989 |
| 4826042 | Blade holder and automatic dispenser The present invention includes a holder for blades having a dispensing opening through which a single blade can be slideably ejected by either a sliding ejector or manual manipulation through a thumb slot. The blades within the holder are aligned by a fre... | 05/02/1989 |
| 4825813 | Multi-pipe once-through type boiler A multi-pipe once-through boiler having at least one row of a plurality of circumferentially arranged pipes on which a plurality of fins are arranged in such a manner that the fins are in contact with the flow of the combustion gas in a substantially para... | 05/02/1989 |
| 4817912 | Bi-metal operator for smoke, fire and air control damper A damper operator for use with a damper having a frame and a damper blade pivotally associated with the frame, which damper operator comprises a bi-metallic element provided with a heating pad which may be remotely activated to control the damper. The bi-... | 04/04/1989 |
| 4801137 | Variable weight hand held exercise apparatus A variable weight hand held exercise apparatus in the shape of a jump rope handle. The apparatus may be attached to a jump rope, providing variable weight handles or attached to hand straps providing variable weight hand held weights. The apparatus is hol... | 01/31/1989 |
| 4784380 | Automatic battery stacker Apparatus for automatically stacking battery plates and separators is disclosed. Battery plates and separators elements are alternately and automatically combined on a conveyor belt to form sandwiches wherein a plurality of such sandwiches are later assem... | 11/15/1988 |
| 4782617 | Water temperature measurement apparatus A water temperature measuring device includes a temperature sensor which is located adjacent one end of an elongated member such as a hiking/wading staff or a fishing rod. A temperature readout device is located in the vicinity of the other end of the elo... | 11/08/1988 |
| 4778735 | Storage battery gang vent cap A gang vent cap for commonly venting a plurality of cell apertures of a storage battery in which a vent cap having a cover and a base which define a selectively configured hollow enclosure. A venting path is defined within the hollow enclosure which inter... | 10/18/1988 |
| 4773431 | Intra-amniotic loop catheter An intra-amniotic loop catheter which allows direct access to a free floating segment of the umbilical cord for direct blood sampling. The loop catheter is formed of a flexible, resilient material with a distal, hook shaped end which may be straightened b... | 09/27/1988 |
| 4771923 | Tamper evidencing cap A tamper evidencing closure for a container, such as a bottle, in which a tamper indicator is completely separated from the closure upon removal of the closure. The tamper indicator is separated from the closure as the closure is removed from the containe... | 09/20/1988 |
| 4756415 | Shrink wrap battery package A storage battery shrink wrap enclosure which includes foam pads to protect battery terminals and vent covers, and an outer form fitting shrink wrap covering. The enclosure allows batteries to be stacked, reduces potential for user contact with acid, and ... | 07/12/1988 |
| 4743495 | Seat cushion fire blocking fabric A non woven fire blocking seat fabric particularly suited for aircraft applications is disclosed. The fabric is a nonwoven, multiplied flame resistant fabric comprised of at least two felted plies, each ply being further comprised of fibers selected from ... | 05/10/1988 |
| 4723727 | Fishing reel shift mechanism A fishing reel having shiftable concentrically-mounted gears engageable with each other via respective gear core members, with one core member of one gear having at least one perpendicular projection which is receivable by at least one well disposed in th... | 02/09/1988 |
| 4706828 | Tamper resistant cap A novel tamper-evident closure assembly for a container, such as a bottle, which can incorporate one or more tamper indicators that are severed from the closure assembly when the cap is removed. The tamper indicator can be shaped as a disk or any other di... | 11/17/1987 |
| 4702025 | Display frame A display frame for a sign, poster, or the like. The frame comprises a plurality of frame sections each comprising a rear structure, a front structure, and tensioned spring means. The rear structure has a cylindrically shaped portion and an opposing chann... | 10/27/1987 |
| 4685415 | Apparatus for enveloping a battery plate by a dip process An apparatus for enveloping a battery plate with a microporous battery separator material by a dip method. The method involves first removing air bubbles from the plate by dipping the plate in a liquid, then dipping the plate into a polymer-solvent-filler... | 08/11/1987 |
| 4684887 | High voltage test confirmation apparatus An apparatus, for use in conjunction with a high voltage tester, for confirming that the high voltage test has been successfully completed. The apparatus detects currents caused by the application of a high test voltage to an article under test. If the de... | 08/04/1987 |
| 4678681 | Process for preparation of water-proof sheets Disclosed is a process for preparing a water-proof sheet by forming a polymer coating on both the surfaces of a fibrous substrate fabric. At first, the fibrous substrate fabric is treated with a water repellant, and both the surfaces are subjected to the ... | 07/07/1987 |
| 4646921 | Packaging and display container A packaging and display container, adapted to removably mate with a wire display rack, comprises at least two adjacent pockets which are separated by a borderline. Each pocket has a bottom, side walls, a front wall and a rear wall. A horizontal flange ext... | 03/03/1987 |
| 4607817 | Collapsible podium A collapsible podium comprising a front panel, a rear panel, and a flat floor panel all in hinged relationship to each other essentially along respective adjacent edges. The floor panel has a rear portion and a front portion in hinged relationship to each... | 08/26/1986 |
| 4605455 | Method of manufacturing shoes A method of manufacturing a shoe which comprises forming a foamed outsole in a mold cavity and cementing an insole to the formed outsole during molding. The mold is made of a silicone rubber and has a deeper cavity for forming the outsole and a shallow ca... | 08/12/1986 |
| 4570105 | Electrical adapter for use in connection with fluorescent lamps An electrical adapter assembly for enabling use of a fluorescent lamp in connection with an incandescent lighting fixture comprises a hollow and cylindrical housing, an Edison-type base extending from one end of the housing and a cover enclosing the end o... | 02/11/1986 |
| 4569854 | Process for preparing negative plates for use in a dry charge battery Formed negative plates for use in dry charge storage batteries are treated with an aqueous solution of an oxidation inhibiting agent such as salicyclic acid or 2-naphthol, and then dried.... | 02/11/1986 |
| 4563973 | Heat detection apparatus A heat detection apparatus comprising a display face having a protruding member extending therefrom disposed in a fixed frame means and connected to a tension means in a tensioned mode, said protruding member and display face maintained in a first positio... | 01/14/1986 |
| 4560118 | Drive mechanism for fishing reel A drive mechanism for fishing reels is disclosed which includes a spool supported on bearings and a shaft, carried in spaced side plates of a reel frame. The reel includes a cam operated brake mechanism which includes a plurality of stops, with an axially... | 12/24/1985 |
| 4540554 | Removal of Sox, Nox, and particulate from combusted carbonaceous fuels The invention is a method for removing sulfur oxides, nitrogen oxides and particulate from the products of combusted carbonaceous fuels. Sulfur oxides, nitrogen oxides and particulate are currently discharged to the atmosphere as flue gas in quantities hi... | 09/10/1985 |
| 4418464 | Wrapping apparatus for industrial battery plates An apparatus for automatically wrapping a plate for use in a lead acid industrial storage battery, said wrapping comprising a combination of three acid resistant, flexible porous materials forming an envelope adapted to insulate said plate while allowing ... | 12/06/1983 |
