Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4922889 | Pelletized fuel burning heater A heater for burning combustible pelletized fuel. The pelletized fuel is delivered at a controllable rate to a double-walled burn pot in an enclosed combustion chamber. Combustion air is injected into the combustion chamber at a pressure higher than the a... | 05/08/1990 |
| 4865543 | Liquid fuel combustion with porous fiber burner Improved combustion of liquid fuel is achieved with a porous fiber burner by forming a mixture of the vaporized fuel and all of the desired combustion air sufficiently heated to prevent condensation of the vaporized fuel, and introducing the heated mixtur... | 09/12/1989 |
| 4850870 | Prosthodontic restoration components Abutment posts and copings for use with dental implants are disclosed. The abutment post has at one end means to affix it to the implant so as to extend supragingivally from the implant through the gum tissue. The post tapers down in cross-section from a ... | 07/25/1989 |
| 4850854 | Child resistant cigarette lighter A child-resistant cigarette lighter having a cigarette well with a flame chamber near its bottom. Fuel and air are supplied to the flame chamber producing a combustible mixture which is then ignited, thereby producing a flame which is entirely confined to... | 07/25/1989 |
| 4845038 | Cell culture vial An apparatus for maintaining a biological sample on a support is disclosed. The apparatus comprises a hollow chamber with internal and external surfaces and a first and second end. The first and is open and is adapted for attachment to the first closure m... | 07/04/1989 |
| 4842509 | Process for fuel combustion with low NOx soot and particulates emission The emission of NOx, soot and particulates is minimized by combusting fuel in two sequential steps, viz. a first combustion step wherein a number of fuel jets and a substoichiometric amount of combustion air in the form of an equal number of high-velocity... | 06/27/1989 |
| 4842046 | Slim-line van heater/air conditoner unit A vehicle heater/air conditioner which includes heating and cooling coils enclosed within a housing and in flow communication with a blower member which pushes air through the housing. The housing containing the heating and cooling coils is positioned gen... | 06/27/1989 |
| 4842051 | Rabble arm used in multiple hearth furnace A rabble arm adapted to be connected to a rotatable center shaft of a multiple hearth furnace includes an elongated tubular member having an open end portion and an opposite closed end portion. The tubular member has an outside surface of substantially ov... | 06/27/1989 |
| 4840223 | Power back scrubbing and flushing system for cooling systems Conventionally, cooling systems are drained and flushed out with a gravity flow of water added through the radiator cup. The present device permits power back scrubbing and flushing through the heater core, through the engine and then through the radiator... | 06/20/1989 |
| 4840346 | Apparatus for sealing a well blowout An apparatus T1 for sealing a well tubing 12 including a housing 20, 21, 22 which has a channel 68 communicating with the bore of tubing 12 and a chamber 43 connected with channel 68. A seal 62 is slidably mounted in the housing and is disposed... | 06/20/1989 |
| 4840226 | Corrosive resistant heat exchanger A corrosive and errosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot con... | 06/20/1989 |
| 4838519 | Electric vacuum actuator valve An electrical valve having three paths, of the type comprising a valve body which is in permanent communication with an apparatus, controlled by fluid, notably by pneumatic partial vacuum, and is in alternate communication with either a fluid source of en... | 06/13/1989 |
| 4838782 | Burner with regenerative bed A regenerative burner includes a chamber containing heat storage bodies which extract heat from hot products of combustion flowing through the burner during one part of a cycle of operation and yield up that heat to incoming air during a further part of t... | 06/13/1989 |
| 4839291 | Disposable biological indicator test pack for monitoring steam and ethylene oxide sterilization cycles A disposable test pack for monitoring the efficacy of steam or ethylene oxide sterilization cycles includes a fiber board housing for a bioligical indicator. The housing includes an outer tube and a shorter inner tube. The outer tube has upper and lower p... | 06/13/1989 |
| 4837156 | Tilting lauter tun A vessel has a central longitudinal axis, a pair of trunnions defining a tilting axis, and a fixed bottom and a false bottom. The false bottom comprises at least one screen. At least one of the screens is affixed to the vessel by a plurality of hinges so ... | 06/06/1989 |
| 4836179 | Portable barbecue grill with cover support A portable barbecue grill includes a bowl (12) and a cover (14) having a gripping handle (44) with a carrying handle (50) pivoted on the bowl to lock the cover to the bowl. A latch member (60) cooperates with the carrying handle to define a cradle for the... | 06/06/1989 |
| 4836182 | Gas burning heating device A forced air gas fired heating device may be utilized as a stove insert for a conventional open fireplace or in an alternative embodiment may be formed with a double walled construction for use as a free standing unit. In both embodiments a gas burner adj... | 06/06/1989 |
| 4834065 | Field cooker A portable field cooker is taught which enables a user to heat food in an inner vessel thereof while the user remains on the move. The cooker includes a tubular body having an outer housing, and an inner, food containing vessel. Insulation means are provi... | 05/30/1989 |
| 4834655 | Cutting tools A cutting tool include a shank having a head, a groove which is formed on the outer face portion of the head only in the dextrally spiral form, and hard abrasive grains-attached section formed on the outer face portion of the head except for the groove. T... | 05/30/1989 |
| 4832117 | Fin tube heat exchanger A fin tube heat exchanger is internally provided with a plurality of plate-shaped and regularly spaced fin members, a plurality of heat exchanger tubes inserted into through-holes defined in each fin member and a plurality of raised pieces formed in each ... | 05/23/1989 |
| 4832594 | Control system with timer redundancy A fail safe control circuit for supplying gas to a burner is disclosed and includes a plurality of timers, two of which set upper and lower bounds on a window or acceptable time interval during which a third timer must issue a control signal for that sign... | 05/23/1989 |
| 4832001 | Lightweight solar panel support A lightweight support for one or more solar panels is disclosed. A compression frame is mounted to the supporting surface, and tension members extend laterally from the frame in opposite directions to the supporting surface. The solar panels are attached ... | 05/23/1989 |
| 4832595 | Torch nozzle assembly A gas fuel torch assembly is provided for attachement to a portable pressurized gas fuel cylinder. The assembly includes a housing and a gas delivery system in the housing. The system delivers gas fuel from the cylinder within an adjustable operating pres... | 05/23/1989 |
| 4833577 | Light source in a subdivided arrangement A light source having a single glass bulb housing and a multiple of three electrically interconnected fluorescent tubes. The tubes are located outside of the focal point of a smooth curved mirror. The phases of the fluorescent bulbs are electrically overl... | 05/23/1989 |
| 4833081 | Bioreactor having cells in beads in a matrix A biochemical reactor including a vessel, a support material matrix in the vessel and particles containing cells entrapped within the matrix is disclosed. In this manner, biological cells that are ordinarily too small to incorporate into a support materia... | 05/23/1989 |
| 4833087 | Disposable container configured to produce uniform signal There is disclosed a container for storing a reagent and then for reacting the reagent to produce a signal representative of the presence of an analyte, or of the amount of that analyte. The container is disposable and comprises at least one compartment h... | 05/23/1989 |
| 4832597 | Gas burner A gas burner (20) disclosed has general utility but has particular utility when utilized in a closely spaced relationship to roller conveyed glass sheets to provide forced convection heating. The burner (20) includes a combustion member (38) in which gas ... | 05/23/1989 |
| 4830099 | Apparatus for extracting cleaning bodies from a liquid Apparatus for extracting cleaning bodies from a cooling liquid after flowing through the tubes of a heat exchanger as a pipe section casing with at least one layer of screens arranged in a V-shaped manner mounted to be pivoted for through-washing includes... | 05/16/1989 |
| 4830614 | Oral hygiene work station An oral hygiene work station includes a work table which includes a wash basin and a spray fitting and at least one cabinet which can receive additional components. A table top is pivotally mounted underneath and approximately in the center of the work ta... | 05/16/1989 |
| 4830606 | Gas lamp and control thereof An outdoor-type gas lamp is provided with a photovoltaic solar cell means, a rechargeable battery connected to the solar cell means, a normally-opened electromagnetic gas valve means, and an ignitor means connected to both the photovoltaic solar cell mean... | 05/16/1989 |
| 4830605 | Combustion apparatus and method of forcibly circulating a heating medium in a combustion apparatus According to the invention, a combustion apparatus includes an upright type combustion chamber having a bottom, conduit means extending below and along the bottom of the combustion chamber and having a nozzle which passes upwardly through the bottom and o... | 05/16/1989 |
| 4831504 | Holder with semiconductor lighting device An illuminated tool or key, in which a light source is detachably secured to a surface of the tool or key. Additionally, the emitted light can be modulated to perform an additional keying function when received by the lock. A three-color light emitter is ... | 05/16/1989 |
| 4830602 | Gas range with at least one burner covered by a glass ceramic plate Gas range with at least one burner covered by a glass ceramic plate, wherein the burner has a gas cock and a timed-ignition and monitoring device, such that the output of the burners is adjustable. A gas cock is used with plugs rotatable between a high an... | 05/16/1989 |
| 4829002 | System for metering nutrient media to cell culture containers and method A system for metering nutrient media to cell culture containers includes a media flow conduit which defines at one end means for substantially aseptic communication with the source of the media. In a preferred embodiment, sterile connectors may be used fo... | 05/09/1989 |
| 4828486 | Fluidized bed combustor and a method of operating same A fluidized bed combustor wherein a combustion chamber and a regeneration chamber are both contained in a single hollow body is provided. These two chambers are formed by vertically partitioning the body by a partition wall, which has an upper opening and... | 05/09/1989 |
| 4827903 | Barbecue cooker with smoke and collection system A table-mounted barbecue cooker is provided which has a grill, gas burner or coals, grease pan, smoke collection system and greaase collection system including a grease filter. The grill, burner or coal box, and grease pan are all easily removed for clean... | 05/09/1989 |
| 4828484 | Gas valve relay redundant safety A fail safe redundancy circuit for controlling a gas valve relay in a gas fired furnace or similar burner is disclosed. The status of the relay contacts is monitored and if those contacts are in the position for enabling the gas valve prior to an ignition... | 05/09/1989 |
| 4828068 | Hydraulically power assisted steering gear with pressure relief stop Rack and pinion steering gear with hydraulic power assist that is reduced as the vehicle wheels approach their positive wheel stops so that hydraulic loads on the steering gear and linkage are reduced and the power steering pump is not forced to excessive... | 05/09/1989 |
| 4827905 | Outer glass pipes for solar heat collector pipes An outer glass pipe for a solar heat collector pipe includes an outer glass pipe body formed of a straight glass pipe being open at both ends and a lid member provided therein with a small diameter opening. An exhaust pipe of a small diameter is attached ... | 05/09/1989 |
| 4828017 | Cooling device for off-road vehicle A cooling device is mounted on an off-road vehicle including a vehicle frame having a pair of main pipe members spaced from each other transversely of the vehicle and extending longitudinally of the vehicle, the main pipe members having rear portions join... | 05/09/1989 |
