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 |
| 4654077 | Method for the pyrometallurgical treatment of finely divided materials Process and apparatus for pyrometallurgically treating finely divided ores, concentrates, residues, slags and like materials. The process utilizes a reactor having two co-axially extending, vertical reaction chambers. The process comprises forming within ... | 03/31/1987 |
| 4641551 | Apparatus for translating rotational motion and torque The present invention provides apparatus which can be incorporated into a powered instrument that rotates a tool at varying rotational speeds and torques. The invention includes at least two drive plates, each of which rotates at a different speed and whi... | 02/10/1987 |
| 4634976 | Barkhausen noise method for stress and defect detecting in hard steel A sensor for a system that detects stresses and defects in a metal piece by employing the Barkhausen phenomenon enables static or dynamic testing of such metal pieces as hard steel in which only low levels of Barkhausen noise can be generated or which are... | 01/06/1987 |
| 4616501 | System for determining gas concentration A system employs ultrasound to determine the concentration of gases present within a chamber. The system causes ultrasound to propagate through the chamber at each of at least two operating frequencies. The amplitude of the ultrasound at a predetermined p... | 10/14/1986 |
| 4589476 | Air ventilation and filtration apparatus Apparatus for exchanging air within an enclosure with outside air while subjecting air within the enclosure to gas filtration and/or electronic air cleaning. The apparatus includes a two-position valve to provide an intake cycle and an exhaust cycle; duri... | 05/20/1986 |
| 4578763 | Sampled data servo control system with deadband compensation The present invention provides a high response inexpensive microprocessor based control system. The system uses only one detector that detects only one motion characteristic of the object controlled by the system. In the preferred embodiment, the system c... | 03/25/1986 |
| 4577271 | Sampled data servo control system The present invention provides a high response inexpensive microprocessor based control system. The system uses only one detector that detects only one motion characteristic of the object controlled by the system. In the preferred embodiment, the system c... | 03/18/1986 |
| 4562047 | Indicator seal and sterilizer container A sterilizer container includes a seal member so positioned on the container that movement of the outer cover of the container to a contaminating position requires fracturing the seal, thereby destroying the utility of the seal member and thus providing a... | 12/31/1985 |
| 4552720 | Debris compressing autoclave An autoclave for sterilizing used medical equipment and compacting same for disposal comprising a sealable receptacle lined with a thermoplastic liner wherein the liner forms an interior region for receiving used medical equipment. The sealable receptacle... | 11/12/1985 |
| 4551311 | Sterilizer container A sterilizer container comprising a lower base portion, cover, and an intermediate cover which is installed in a sealing manner on the inwardly drawn edge of the lower base portion. The cover includes an overlapping flange. A flow passage, leading to a to... | 11/05/1985 |
| 4539929 | Temperature sensitive reclosure indicator A device for indicating whether a container has been both exposed to a critical temperature and not subsequently opened which includes a housing, a temperature-sensitive member which assumes a first position and a second position within the housing, and a... | 09/10/1985 |
| 4516655 | Remote drive with powershift transmission A remote driving system (40) for use on a material handling vehicle (10) having a rotatable upper structure (12) including means for driving said material handling vehicle (10) through powershift transmission. A hydraulic power supply (50) is provided on ... | 05/14/1985 |
| 4512951 | Hydrogen peroxide liquid film sterilization method A method is provided of hydrogen peroxide sterilization of medical articles whereby there are obtained the advantages of both vapor penetration, especially for such articles as surgical packs, and direct liquid-sterilant article contact, in which a vapor ... | 04/23/1985 |
| 4487523 | Accessory clamp for abductor bar The present invention provides a clamp which can be used to secure an accessory member to an abductor bar of an orthopedic-surgical table. The clamp includes a clamp block pivotally mounted on the clamp and oriented with respect to the clamp to clamp an o... | 12/11/1984 |
| 4474486 | Apparatus for stamping characters on a workpiece in multiple rows A machine for stamping characters in multiple rows on a workpiece is disclosed. The machine includes an impact head assembly mounted on a transversely slidable carriage, the impact head assembly being adapted for reciprocating movement perpendicular to th... | 10/02/1984 |
| 4460242 | Optical slip ring An optical slip ring comprises a rotatable output member and a second rotatable member located intermediate the output member and a stationary input member, the input member having a plurality of equispaced light inputs and the output member having a corr... | 07/17/1984 |
| 4441724 | Fluid-tight seal A fluid-tight seal formed by a dual, surface mounted sealing gasket is disclosed. The gasket has a web joining the spaced sealing members. The web engages post members mounted along one of the surfaces to be sealed. The post members serve as spacing means... | 04/10/1984 |
| 4432713 | Machine for the continuous molding of polystyrene An improved machine for the continuous molding of polystyrene is described in which granules of polystyrene containing a heat-activated expansion agent are converted into a coherent agglutinated body. The machine includes an open ended molding chamber hav... | 02/21/1984 |
| 4421275 | Apparatus for applying refractory material to refractory lined vessels Apparatus for applying refractory material to the interior surfaces of vessels adapted to contain molten metal. A pair of concentric conduits separately convey refractory material and water; the inner conduit is stationary and carries the refractory; the ... | 12/20/1983 |
| 4413707 | Suspended chain scaffolding employing adjustable posts with chain threaded therethrough A chain supported scaffolding arrangement for use inside of a building or vessel or in working under a bridge. Chain gripping plates engage the chain and support hollow tubular vertical posts which have a plurality of receptacles connected thereto. The ch... | 11/08/1983 |
| 4407960 | Visual chemical indicating composition for monitoring sterilization An indicator system and device for visually monitoring ethylene oxide sterilization by color changes of the indicating composition of the system upon sufficient and properly conditioned exposure of the composition to ethylene oxide provides a controlled m... | 10/04/1983 |
| 4382824 | Method for disinfecting and cleaning contact lenses A process is described for cleaning and disinfecting a soiled contact lens in a single unit operation. The soiled contact lens is immersed in a cavitation-supporting saline solution which is at ambient temperature. The lens is then subjected to ultrasonic... | 05/10/1983 |
| 4379257 | Dynamo electric machines A single phase or multiphase dynamo electric machine including a stator having at least one winding arranged to be energized to provide an alternating flux, and a further member, e.g. a rotor, movable with respect to the stator and having at least one sho... | 04/05/1983 |
| 4357568 | Variable speed AC dynamo electric machine A single phase or multiphase dynamo electric machine including a stator member having at least one winding arranged to be energized to provide an alternating flux, and a further member, e.g. a rotor, movable with respect to the stator and having at least ... | 11/02/1982 |
| 4354514 | Apparatus for cleaning and drying anesthesia and respiratory equipment An apparatus for cleaning and drying articles of anesthesia and respiratory equipment, particularly corrugated tubing and breathing bags. The corrugated tubes are threaded onto vertically arranged, perforated pipes which have restricted flow passages at t... | 10/19/1982 |
| 4337956 | Double lip seal with pressure compensation A sealing device for application between two confronting, generally parallel surfaces. One of the surfaces has a longitudinally extending groove for receiving the sealing device. The sealing device includes a base member having bottom surface contours to ... | 07/06/1982 |
| 4335071 | Pressure-vacuum purge cycle A pressure-vacuum purge cycle that is employed in the sterilization of dry goods and especially of wrapped fabric packs employs a positive pressure steam pulse followed by a positive pressure steam displacement of continuously vented air in novel combinat... | 06/15/1982 |
| 4328031 | Method of mixed blowing for refining metals in a converter The present invention concerns a method of introducing refining gas and stirring gas into metal refining converters, and more particularly into converters in steelworks. To achieve this, the subject of the present invention is a method of blowing oxidizin... | 05/04/1982 |
| 4316726 | Method and apparatus for processing fluids The application discloses a method and apparatus for processing liquid-containing fluids present in a work chamber at elevated temperature; the method and apparatus are particularly useful in connection with a steam/hot water washing machine. A housing is... | 02/23/1982 |
| 4309286 | Lower sealing means for chromatographic column An improved lower sealing means for a chromatographic column including a disc of phase separation paper transversely disposed within the column at its bottom portion and a flanged retaining ring in contact with the paper disc at its periphery and sealingl... | 01/05/1982 |
| 4304869 | Apparatus for rupturing a sealed, frangible container Apparatus for rupturing a sealed, frangible container is disclosed. A substantially rigid tubular member, closable at both ends if desired, is provided with a zone of reduced interior cross section. The tubular member is adapted to receive the frangible c... | 12/08/1981 |
| 4293310 | Photoelectrochemical immunoassay A method and apparatus for the determination of trace amounts of chemicals in a system, as for example the immunoassay determination of hormones, peptides and drugs in biological fluids, applies photoelectrochemistry to the field of immunoassay. The appar... | 10/06/1981 |
| 4292693 | Locking bail stapedial prosthesis An improvement in bail-and-bucket, piston-type stapedial prostheses in which the bail is pivotally mounted to rotate about the open end of the bucket. Means are provided on the bucket for permitting overcenter pivotal movement of the bail in one direction... | 10/06/1981 |
| 4291122 | Biological indicator for sterilization processes A biochemical test system is disclosed for use in a biological fermentation sterilization indicator. The carbohydrate component of a nutrient broth media is removed from the media. The carbohydrate component may be disposed in the cavity of an encapsulate... | 09/22/1981 |
| 4288066 | Container for medical device The present invention provides a container, package, or case and at the same time an article of surgical equipment for the storage, transportation, asepsis and surgical preparation of a medical device. The container is especially adapted for small, delica... | 09/08/1981 |
| 4282179 | Disinfection with isopropanol vapor A low temperature method for the cleaning and disinfection of heat- and liquid-sensitive articles that are brought into physical contact with patients during diagnostic evaluation, surgery or therapy. These articles, such as endoscopes, bronchoscopes and ... | 08/04/1981 |
| 4281419 | Middle ear ossicular replacement prosthesis having a movable joint An improvement in an otic prosthesis of the type used in ossicular reconstruction of the sound-conducting mechanism of the middle ear is provided. The improvement comprises a movable joint which connects a head portion and a shaft portion whereby there is... | 08/04/1981 |
| 4279563 | Unmanned material handling system for servicing a multi-level structure An unmanned material handling system for servicing a plurality of vertically spaced levels of a structure is provided. This system includes an unmanned, selfpropelled vehicle driven by an electromechanical device such as an electric motor. The vehicle inc... | 07/21/1981 |
| 4272682 | Specimen elevator for an ion milling machine An ion milling machine specimen elevator comprising a vertically oriented piston which supports a specimen holder at its top and is movable between a lowered operating position and a raised viewing position. When the piston is in the lowered operating pos... | 06/09/1981 |
| 4267671 | Positioning of an abrasive belt on a grinding machine A belt grinding machine wherein the belt is maintained at a selected position on the drive and idler pulleys and the drive and idler pulleys are supported from a column which is oscillated relative to the work piece holder. The drive pulley or contact whe... | 05/19/1981 |
