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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5823478 | Pressure feed for liquid propellant One of the propellants used in a bipropellant rocket engine has a vapor pressure sufficiently high under prevailing condition to generate vapor at a pressure sufficiently high to pressurize both the volatile component and the second rocket propellant and ... | 10/20/1998 |
| 5821139 | Method for manufacturing a DRAM with increased electrode surface area A method of forming a capacitor on a semiconductor substrate includes forming a first silicon oxide layer on the semiconductor substrate. A first photoresist is patterned on the first silicon oxide layer. An etching step is used to etch the first dielectr... | 10/13/1998 |
| 5499785 | Autojettison method and apparatus for dual-point suspension systems A method and apparatus for automatically jettisoning cargo carried by a dual-point suspension system when a suspension system failure is detected. Three conditions must be satisfied before a load is jettisoned. The average value of the load and an instant... | 03/19/1996 |
| 5487751 | Mechanical connector for securing compatible medical instruments together A mechanical connector (10) for securing together an electrocardiogram monitor (12) and a defibrillator (14). The connector includes a tongue (16) disposed on a side surface (18) of the ECG monitor and a set of angle flanges (22) disposed on the defibrill... | 01/30/1996 |
| 5473312 | Full container recognition system Disclosed is a full container recognition system (5) for determining when a container (16) having an upwardly facing opening is filled with articles (18) to a predetermined level. The system includes at least one deflectable feeler arm (10) mounted to a s... | 12/05/1995 |
| 5449755 | Human cyclin E Nucleic acid molecules capable of hybridizing under stringent conditions to the nucleotide sequence residing between positions 1 and 1185 of the human cyclin E cDNA sequence shown in FIG. 2 . Polypeptides encoded by such nucleic acid molecules, and immuno... | 09/12/1995 |
| 5427139 | Metering valve with adjustable floating piston and pin assembly An adjustable metering valve (10) includes an upper housing (12) and lower housing (16) that cooperatively define an internal valve chamber (30) having an inlet end (80) and an outlet end (42). An inlet port (20) opens into the inlet end of the valve cham... | 06/27/1995 |
| 5345076 | Optically trimmed sensor for reducing influence of differential node losses A technique is disclosed for optically trimming a sensor (10) to account for manufacturing variations in the losses of the sensor. As a result, the sensor can be used interchangeably, without requiring adjustment of the processing system (12) the sensor i... | 09/06/1994 |
| 5338564 | Fat substitute compositions including waxes for a reduced laxative effect A fat substitute composition includes an edible, substantially non-digestible fat substitute material having a melting point of about 37° C. or less in combination with a wax as an anti-laxative agent to reduce an undesirable laxative effect associated w... | 08/16/1994 |
| 5240857 | Temperature-gradient incubator for studying temperature-dependent phenomena The invention relates to a temperature-gradient incubator for studying temperature dependent phenomena, such as temperature ranges for the growth of microbes, comprising a temperature-gradient plate (10) serving as a reaction substrate and heat transfer e... | 08/31/1993 |
| 5161356 | Stalk chopper and crusher accessory A harvester thresher or combine has a picking slot through which grain stalks are pulled to separate the stalks from the grain heads. Two oppositely rotated, parallel shafts are located at opposite sides of the picking slot. Each shaft has at least one cu... | 11/10/1992 |
| 5137010 | Combustion grate for pellet fueled stove Stoves fueled by biomass pellets are provided with a grate assembly that supports the pellets for combustion and directs combustion gas into the fire. The grate assembly includes a passive grate and a moveable elongate blade spaced above the upper surface... | 08/11/1992 |
| 5100595 | Method for producing a cured-in-place test sample of concrete A method for providing a test sample of concrete from a large poured area of concrete includes using a mold suitable for placement within the concrete form, the mold including a continuous sidewall and a bottom wall connected to the sidewall. An insert wi... | 03/31/1992 |
| 5094819 | Fluorescence-based optical sensor and method for detection of lipid-soluble analytes A sensor, probe, system and method for detecting the presence of or concentration of lipid-soluble analytes such as anesthetics, which involve the use of fluorophore-containing lipid layers or similar amphiphilic structures as the sensor. The lipid layer ... | 03/10/1992 |
| 5081005 | Method for reducing chemical interaction between copper features and photosensitive dielectric compositions The surface of metallic features are coated with a desensitizer composition comprising an amino-silane to reduce the likelihood of chemical interaction between the metallic feature and a photosensitive functional group that is included in a dielectric com... | 01/14/1992 |
| 5065608 | Hand-operated batten seamer tool A hand-operated batten seamer tool (30) for folding a pair of opposed standing seams (96) over to a pair of double seams. A pair of arms (38) pivotally mounted to a common pivot point (50) to rotate a pair of arms (38) pivotally mounted to a batten cap pl... | 11/19/1991 |
| 5056393 | Reversible film cutter assembly A film cutter assembly reversible between a right-to-left and a left-to-right film feed configuration. The film cutter assembly (10) includes a housing (16), an upper control panel (48), a lower control panel (60), and a reel assembly (14). The housing in... | 10/15/1991 |
| 5056743 | Arm support system A ergonomic arm support system for reducing the physical loading of an operator's upper extremities and neck during keying operations is disclosed. The support system includes a hand board and a pair of hand pads that are positioned on the hand board. The... | 10/15/1991 |
| 5055001 | Volumetric pump with spring-biased cracking valves A volumetric pump and method for displacing a predetermined quantity of fluid at a predefined cracking pressure, independent of supply and output pressures. The volumetric pump (30) includes an inlet cracking valve (46), an outlet cracking valve (52), and... | 10/08/1991 |
| 5048153 | Spa cover lift mechanism A lift mechanism (15) for the cover (13) of a portable spa or hot tub (11) comprising a pair of compressible struts (21) and upper and lower hinge mechanisms (24 and 23) is disclosed. The preferred lower hinge mechanism (23) includes a torque tube (25) ro... | 09/17/1991 |
| 5042214 | Self-locking ceiling panels A self-locking panel assembly for use as ceiling panels comprising a plurality of panel units. Each panel unit formed ou of on or more panel elements and a rail extending across the panel elements.The rail is formed out of a lower section and an upper sec... | 08/27/1991 |
| 5039991 | Perturbation modeling system for use in processing direction-finding antenna outputs A system is disclosed in which a direction-finding system (12) employed on an aircraft (20) receives RF transmissions from a remote signal source (16). Amplitude and phase data concerning the transmission are used for direction finding but are perturbed b... | 08/13/1991 |
| 5034896 | Method and apparatus for real time estimation of aircraft center of gravity Disclosed is a method of and an arrangement for real time estimation of the location of the center of gravity of an aircraft. The center of gravity estimate is utilized in an aircraft flight control system for effecting flight control laws in which the ce... | 07/23/1991 |
| 4973666 | Peptide fragments containing HP and LP cross-links A method for assaying bone resorption rates by quantitating the concentration of peptide fragments derived from bone collagen, found in a body fluid. The method includes immunometric assay, fluorometric assay and electrochemical titration. The structure o... | 11/27/1990 |
| 4943919 | Central maintenance computer system and fault data handling method The present invention is directed towards an onboard central maintenance computer system integrated into an aircraft system and a system for collecting and analyzing complete maintenance information. The central maintenance computer system (CMCS) collects... | 07/24/1990 |
| 4925802 | Method for stimulating biodegradation of halogenated aliphatic hydrocarbons A method of biodegrading halogenated alipahtic hydrocarbons is disclosed comprising incubating the hydrocarbons with microorganisms capable of degrading halogenated aliphatic hydrocarbons together with a nontoxic, nongaseous substance that induces the bio... | 05/15/1990 |
| 4867078 | Burner A burner including a cyclone shaped housing divided by a baffle plate into an upper cyclone chamber and lower chamber, the walls of the chambers are formed to resist heat and corrosion, the baffle plate extends across a major portion of the width of the c... | 09/19/1989 |
| 4772010 | Guide mechanism for paper sheets in an elevator type sorter A paper sheet guide mechanism is provided for use in a sorter of the elevator type. Paper sheets are conveyed from an input through the paper sorter along a conveyor belt and are successively deflected by an elevator for distribution on corresponding pape... | 09/20/1988 |
| 4730930 | Scanning apparatus and method A scanner and scanning method for scanning a sheet such as a chart. The scanner includes scanning means and detection means. The scanning means includes means for supporting and mounting the sheet, and illumination means for directing light onto an illumi... | 03/15/1988 |
| 4620415 | Method for initiating decomposition of hydrazine fuels A method for initiating the decomposition of hydrazine fuels by bringing the fuel into contact with an initiator selected from the group consisting of iodates and periodates of metals from groups IIIB, IVB, VIB, VIIB, VIII, IB, IIB and IVA of the periodic... | 11/04/1986 |
| 4560655 | Serum-free cell culture medium and process for making same A defined serum-free medium that is capable of growing a wide range of suspension and monolayer cells includes a serum substitute composed of fetuin, transferrin, phosphatidylcholine, e.g., 1-oleoyl-2-palmitoyl-phosphatidylcholine, linoleic acid and chole... | 12/24/1985 |
| 4558990 | Composite pumping system An article transfer pumping system combining the effects of a jet pump and an air lift pump to minimize article damage while increasing lift capability and overall system efficiency. Air lift pump placement adjacent the pump inlet aerates the rising colum... | 12/17/1985 |
| 4556889 | Aircraft trailing ball antenna An antenna, suitable for being deployed from an aircraft or other vehicle and characterized by broadband, omnidirectional radiation/reception is provided by a coaxial transmission feed line that is terminated by an electrically conductive ball that is ele... | 12/03/1985 |
| 4551718 | Method and apparatus for transmitting status information between remote locations A system for transmitting status information from a first location to a remote second location includes a monitoring device at the first location for monitoring the state of a plurality of relays or other devices that are capable of being in either an act... | 11/05/1985 |
| 4548962 | Rubberized asphaltic concrete composition A rubberized asphaltic concrete composition in which the particle sizes of the rubber granulate and the mineral aggregate are adjusted so that a relatively typical particle distribution is achieved in the total aggregate.... | 10/22/1985 |
| 4528486 | Controller for a brushless DC motor A controller for regulating the current applied to the windings of a brushless DC motor by pulse width modulating transistors arranged in a six-switch bridge. Current feedback signals are obtained from sense resistors provided in the lower legs of the bri... | 07/09/1985 |
| 4516287 | Angled roller mop A roller mop having a wringer assembly connected to a handle and a cleaning element mounted in the wringer assembly for reciprocation through a pair of rollers in a direction that is transverse to the longitudinal axis of the handle. The cleaning element ... | 05/14/1985 |
| 4487060 | Railway brake pressure monitor The railway brake pressure monitor includes a sensor/transmitter unit (STU) and a remote display unit (RDU). The sensor/transmitter unit is mounted on the last vehicle of a railway train and coupled with the brake pipe thereof and includes a pressure tran... | 12/11/1984 |
| 4473318 | Passive structures tubing connector terminal A fatigue-resistant terminal for tubing used in passive structures by which the tubing member of the structure may be bolted or otherwise fastened in face-to-face contact with another member of the structure. The connector terminal contact face on one sid... | 09/25/1984 |
