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 |
| 5458789 | Removal of organics from aqueous waste streams Apparatus and process for removing relatively low levels of components, particularly organic components found in an aqueous stream in one or more stripping zones located in a process unit. An eductor means extending into each stripping zone is used to pro... | 10/17/1995 |
| 5443294 | Single-line clamshell bucket A single-line clamshell bucket is provided comprising an upper sheave housing and an upper sheave assembly connected to the upper sheave housing. The bucket also comprises a lower sheave assembly vertically aligned beneath the upper sheave assembly in a m... | 08/22/1995 |
| 5433854 | Method for preventing erosion in waste water lift stations and treatment facilities A method of removing noxious odors and preventing erosion within waste water enclosures is provided comprising the step of administering a flow of ozonated air into a vapor space above the level of the waste water in the enclosure, wherein the volume of t... | 07/18/1995 |
| 5413713 | Method for increasing the rate of anaerobic bioremediation in a bioreactor A process is disclosed to increase the anaerobic bioremediation rate in a bioreactor by recirculating to the bioreactor that portion of a pollution stream that has flowed through a passageway containing material on whose surface anaerobic microorganisms c... | 05/09/1995 |
| 5402783 | Method of minimizing distortion to radiation isodose contours and of targeting the depth of maximum dose at an effective tissue depth during radiation therapy A method for minimizing the distortion of the isodose contours created by tissue surface irregularities and for targeting the depth of maximum dose at an effective tissue depth during radiation therapy to a treatment field from a source is described. The ... | 04/04/1995 |
| 5397480 | Purification of aqueous streams Aqueous streams are purified by use of ozone in one or more purification zones wherein the ozone is drawn from one purification zone to another by use of one or more eductors in each purification zone.... | 03/14/1995 |
| 5356082 | Incinerated waste material treatment Method for treating an incinerated waste material feedstock to obtain a "free-from-ash" ferrous metal product and/or a "metal-free" ash product are disclosed which provide for early separation of the initial feedstock into a predominately ash stream and p... | 10/18/1994 |
| 5253835 | Shelf bracket assembly A shelf bracket assembly is provided, comprising a plurality of vertical shelf bracket support strips attached to a wall, each said strip having a plurality of slots aligned vertically along the length of said support strips; a plurality of shelf brackets... | 10/19/1993 |
| 5248046 | Crayfish grading apparatus An apparatus for grading crayfish is provided, comprising a tank having a bottom and sides forming a cavity which will hold water; and a grate assembly having multiple, vertically separated tiers to form spaces between adjacent tiers of sufficient size to... | 09/28/1993 |
| 5184508 | Method for determining formation pressure A method for accurately determining the formation pressure of earth formans. Formation measurements are made with by use of a novel downhole tool which allows drilling mud to enter the tool in such a way that decompression of drilling mud is controlled s... | 02/09/1993 |
| 5181253 | Loudspeaker assembly In a loudspeaker having a yoke assembly including a top plate and a yoke fixedly attached to opposite sides of a magnet to form an air gap between the plate and the yoke into which a voice coil operatively extending from a diaphragm is positioned, the yok... | 01/19/1993 |
| 5174509 | Incinerated waste material treatment Apparatus and processes for treating an incinerated waste material feedstock to obtain a "free-from-ash" ferrous metal product are disclosed which provide for early separation of the initial feedstock into a predominately ash stream and predominately ferr... | 12/29/1992 |
| 5171587 | Amino acid modified food for ictalurid catfish and fish with similar feeding behavior The snapping and biting response of ictalurid catfish, and fish with similar feeding habits, are released by the use of the free amino acids: L-proline, L-alanine, and L-arginine, and mixtures thereof, at concentrations above those normally found around t... | 12/15/1992 |
| 5167126 | Refrigerant recovery and recycling assembly An apparatus for recovering and recycling used refrigerants from automotive air conditioning systems and similar air conditioning systems is disclosed having a unique cleaning assembly, a unique coolable storage means, and for recharging recycled refriger... | 12/01/1992 |
| 5148705 | Method and apparatus for determining the wettability of an earth formation A method and apparatus for determining the wettability of an earth formation wherein a fluid sample from the wall of a borehole penetrating said formation is extracted then reinjected into the wall of the formation. A pressure versus time curve is generat... | 09/22/1992 |
| 5148835 | Well casing pipe thread protector A device for protecting the threads of a well casing pipe which comprises a body constructed from flexible material and having resilient characteristics, wherein the body has a central opening sized to fit about the threads, a passageway extending through... | 09/22/1992 |
| 5147379 | Insertion instrument for vena cava filter An improved insertion instrument for a vena cava filter is provided and iudes a filter retainer attached to the catheter for preventing accidental ejection of the filter and for enabling retraction of the filter into the carrier body at any time prior to... | 09/15/1992 |
| 5122148 | Device for assisting childbirth A device to assist in removing a fetus from a woman's vagina during childbirth is provided comprising a pliable, elongated, hollow member sized to fit over the head of the fetus and a size adjustable collar attached at one end of the member to restrict th... | 06/16/1992 |
| 5119754 | Boat seat stabilizing apparatus A boat seat stabilizing apparatus is provided which includes a support column having a base fixedly attachable to the deck of a boat for supporting other connected parts of the device; a first support arm having a front portion pivotally attached to the s... | 06/09/1992 |
| 5120938 | Keyboard having convex curved surface A lap top keyboard is provided having an outwardly curved center for user mfort and efficiency. The lap support on an underside of the keyboard is recessed, allowing the keyboard to extend downward to an outside of the user's thighs.... | 06/09/1992 |
| 5114275 | Process and waste pit liner for improved hydrophobic waste storage A process for improved hydrophobic waste storage is described wherein a latex comprising a preformed, high molecular weight polymer having a high affinity for hydrophobic liquids, is sprayed on the waste prior to admixing an inorganic matrix material. Alt... | 05/19/1992 |
| 5106327 | On-line drawout case relay and meter test device A test plug for in-service circuit system and device testing of a power system protective relays and meters utilizing the General Electric type drawout case comprising a base assembly having (i) a series of separated normally closed make-before-break test... | 04/21/1992 |
| 5103178 | Method using a pluraliyt of electrode, including a reference electrode, for recording a spontaneous potential curve in a borehole while drilling An apparatus and method for obtaining a spontaneous potential curve, which pparatus is comprised of: (a) an elongated body: (b) a series of vertically spaced electrodes for measuring electrical potential, wherein one of the electrodes is a reference electr... | 04/07/1992 |
| 5083615 | Aluminum alkyls used to create multiple fractures In a gas-generating chemical reaction carried out in a borehole that is largely filled with water, substantial pressure increases can be generated. This pressure can be used to fracture rocks around the borehole and, hence, stimulate water, oil or gas wel... | 01/28/1992 |
| 5032054 | Aerial bundle puller An aerial tube bundle puller for extracting a tube bundle from a heat exchanger is provided, comprising a cradle supporting a carriage frame and a power source, a sled, attachable to a tube bundle, with a hydraulic powered screw drive to propel the sled o... | 07/16/1991 |
| 5027447 | Retractable guard for sewage pipes A retractable guard for use in combination with a sewage pipe leading from a flush toilet is provided having a plurality of prongs with hooked ends positioned within a cross section of the pipe. The prongs are connected to a piston which is slidable withi... | 07/02/1991 |
| 5029260 | Keyboard having convex curved surface A lap top keyboard is provided having an outwardly curved center for user comfort and efficiency. The lap support on an underside of the keyboard is recessed, allowing the keyboard to extend downward to an outside of the user's thighs.... | 07/02/1991 |
| 5026021 | Flush control assembly for pressure flush valves A flush control assembly for delaying the flush cycle of pressure flush valves for use on plumbing fixtures. The flush control assembly attaches to, and becomes an integral working part of the flush valve and contains a delaying means which is actuated by... | 06/25/1991 |
| 4996725 | Retractable guard for sewage pipes A retractable guard for use in combination with a sewage pipe leading from a flush toilet is provided having a plurality of prongs with hooked ends positioned within a cross section of the pipe. The prongs are connected to a piston which is slidable withi... | 03/05/1991 |
