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| Number | Title | Issue Date |
| 6378151 | Baby crib sleep aid A device for elevating the head of a baby in a crib comprising a wedge divided into a plurality of parallel spaced apart sections adapted to fit between the vertical bars of a crib and under the crib mattress to raise one end of the mattress an amount sub... | 04/30/2002 |
| 4775027 | Seismic sound source The volumetric capacity of the firing chamber of an air gun is discretely quantized by mounting unit-volume inserts interiorly of the firing chamber.... | 10/04/1988 |
| 4715469 | Borehole seismic receiver A seismic receiver is provided for measuring seismic signals transmitted through the earth and received in a well borehole. A reversible electrical motor drives a harmonic drive reducer which amplifies the torque provided to drive a ball screw. The ball s... | 12/29/1987 |
| 4685326 | Resonant determination of saturation changes in rock samples Mass, or changes in mass, of a rock specimen are measured to determine the changes in saturation of a rock specimen. Measurements can be obtained in test environments of high temperature or high pressure or both. The mass is rigidly attached beneath a sti... | 08/11/1987 |
| 4686654 | Method for generating orthogonal sweep signals A first sweep signal consists of a plurality of waveforms having non-invariant fundamental periods exhibiting a monotonic frequency progression of at least one octave over the duration of the sweep. Each waveform may consist of an ordered set of asymmetri... | 08/11/1987 |
| 4676337 | Seismic vibrator baseplate A baseplate for a seismic vibrator is formed from two identical cast plate members having stiffening ribs and alternating plug and socket cones along the ribs. The cast plate members are arranged together to align opposed plug and socket cones of the plat... | 06/30/1987 |
| 4671379 | Method and apparatus for generating seismic waves A method and apparatus for generating a seismic wave in a borehole in the earth is disclosed. A portion of the borehole, which may be the bottom of the hole or any other point along its length, is selected as the site for seismic wave generation. A device... | 06/09/1987 |
| 4654660 | Optical telemetric transceiver An optical telemetric system for use in seismic exploration consists generally of a recorder, a plurality of transceivers, and a like number of cable sections interconnecting each transceiver in parallel with others and the recording unit. A fiber optic t... | 03/31/1987 |
| 4649530 | Combination seismic cable I provide a combination land/bay cable capable for simultaneous use on land and in water-covered areas. When the cable section is placed in a water-covered area suitable for hydrophone use, a polarized plug containing an impedance matching transformer is ... | 03/10/1987 |
| 4647767 | Optical goniometer containing immiscible fluids having different refractive indices An optical encoding goniometer includes a rotatable chamber containing unequal volumes of two immiscible fluids having different indices of refraction and different densities. A plurality of optical fibers are bent to a critical radius and mounted in the ... | 03/03/1987 |
| 4648082 | Marine acoustic gradient sensor A pressure gradient sensor is disclosed for optically sensing the direction and magnitude of an acoustic wave propagating through a fluid. Each sensor consists generally of at least three fiber-optic displacement sensors disposed within a circular array o... | 03/03/1987 |
| 4638662 | Tank leakage detector A method and apparatus for detecting a change in the liquid level in a liquid storage tank, such as an underground hydrocarbon storage tank. A gas line is inserted just below the level of the liquid in the tank, and a second interconnected gas line is pla... | 01/27/1987 |
| 4639729 | Telemetric system In a two-stage, time-division multiplexing method and apparatus, a plurality of sensors are disposed at equal intervals along a plurality of transmission channels. An interrogation signal is transmitted from a recording station to all of the sensors along... | 01/27/1987 |
| 4431893 | Front programmable timer for a microwave oven A front programmable timer provides for the programming, selecting, and operating according to desired operating times in a set of input switches for a microwave oven controller. Retention of the times programmed is provided for in the event of loss of po... | 02/14/1984 |
| 4416022 | Prism light-line system A cylindrical lens-prism light-line generating apparatus utilizing a slit-type aperture provides for origination, collimation and projection of a light-line which cooperates with a light localizer beam in aid of aligning an X-ray beam path preparatory to ... | 11/15/1983 |
| 4292488 | Microwave oven door having a conformable screen A microwave oven having a door configured to minimize the leakage of microwave energy is disclosed. The door includes a flat sheet of glass and a flexible metal screen substantially overlying the glass sheet. The glass and the metal screen are held in sub... | 09/29/1981 |
| 4210795 | System and method for regulating power output in a microwave oven A method and control system for regulating the output power of a magnetron in a microwave oven having a food heating cavity, a magnetron, and a waveguide coupling the magnetron to the heating cavity. The reflection coefficient within the waveguide is meas... | 07/01/1980 |
| 4181744 | Method of browning foods in a microwave oven A method for effectively browning foods in a microwave oven by controlling the humidity of the cooking environment. Humidity and temperature sensors are provided to measure the relative humidity of the environment surrounding a foodstuff to be browned as ... | 01/01/1980 |
| 4171382 | Method of cooking meats in a microwave oven A method of cooking meat in a microwave oven by determining the mean internal temperature of the meat which is indicative of the internal doneness of meat as a function of sensed and sampled time dependent humidity and temperature of the microwave oven he... | 10/16/1979 |
| 4166137 | Method of determining the optimum time to turn meats in a microwave oven A method for indicating the optimum time at which to turn meat over in a microwave oven. The method detects the point where the absolute humidity remains constant and no longer increases indicating that the temperature of the meat has reached an equilibri... | 08/28/1979 |
| 4162381 | Microwave oven sensing system A microwave oven sensing system having a humidity sensor and a temperature sensor at an exit ventilation port of a microwave oven heating cavity to sense the exiting humidity and the air temperature of the microwave oven heating cavity. The humidity senso... | 07/24/1979 |
| 4154855 | Method of cooking foods in a microwave oven A method of cooking foods containing a substantial liquid component by sensing "in-situ" humidity and temperature environmental conditions of a microwave oven heating cavity. The method monitors the rate of change of the slope of the "characteristic humid... | 05/15/1979 |
| 4148535 | Modular display cases A system for constructing modular display and storage cases is disclosed in which the cases are built up from standard shelving. The shelving includes a vertical slot near the front face for engaging a selected mounting element, which in turn provide supp... | 04/10/1979 |
| 4146769 | Microwave oven door A microwave oven door includes a rigid door panel having a frame and hinge effectively bonded to the panel, the frame being supported by the panel. The frame and hinge may be effectively bonded to the panel through attachment to an intermediate structural... | 03/27/1979 |
| 4144437 | Microwave oven energy stirrer An energy stirrer for a microwave oven is disclosed wherein the stirrer is rotatably mounted in a manner to minimize frictional losses. The stirrer is caused to rotate by the passage of cooling and ventilating air across the blades, the air flow pattern b... | 03/13/1979 |
| 4140888 | Dual-feed microwave oven A microwave oven including a window portion in each of two opposing side walls through which microwave energy is fed into the oven cavity. The window portions are covered by a microwave transparent panel which is configured to support a shelf within the o... | 02/20/1979 |
| 4133995 | Method of fire detection in a microwave oven A method for detecting a fire in a microwave oven heating cavity by sensing the time dependent "in-situ" humidity and the temperature environmental conditions of a microwave oven heating cavity in a microwave oven. The humidity sensor and the temperature ... | 01/09/1979 |
| 4133997 | Dual feed, horizontally polarized microwave oven A microwave oven providing for the introduction of microwave energy to a cooking cavity through each of two opposite side walls is disclosed. Each of two side walls includes a window portion and an energy feed box is mounted to each side wall adjacent the... | 01/09/1979 |
| 4105886 | Microwave energy feed system for combination cooking apparatus A domestic cooking appliance which is adapted to provide both conventional thermal cooking and microwave cooking in a single cavity is disclosed. The appliance includes a microwave energy feed system having a housing located outside of the cooking cavity,... | 08/08/1978 |
| 4096370 | Microwave oven door interlock switch system The invention relates to a power supply for microwave ovens and features a fail-safe door interlock switch system. Door interlock switch systems for microwave ovens are designed to stop or interrupt the flow of electrical energy to the magnetron tube upon... | 06/20/1978 |
| 4092513 | Stirrer hub assembly The field stirrer herein has an upwardly concave pan shape and is formed as a sheet metal stamping. It has a central planar section and a surrounding section comprising a plurality of circumferentially arranged segments with planar surfaces, the segments ... | 05/30/1978 |
| 4088354 | Door locking mechanism for self-cleaning oven A door locking arrangement is disclosed for a domestic cooking range having a pyrolytic self-cleaning mode of operation. The locking mechanism includes a rotatable cam assembly having a cam follower and a detent portion. Closing the oven door causes the c... | 05/09/1978 |
| 4088024 | Combination microwave-thermal oven thermostat A thermostat adapted for use in a combination microwave/thermal oven is disclosed wherein at least the outer surface of the thermostat bulb is an electrically conductive metal of the type that is either oxidation resistant or which forms a metal oxide whi... | 05/09/1978 |
| 4082078 | Pyrolytic lock assembly A lock assembly for a domestic cooking appliance for use during a pyrolytic self-cleaning operation. The assembly includes a pair of cams mounted on a common shaft which provide the dual functions of energizing and de-energizing certain switches in the op... | 04/04/1978 |
| 4082077 | Oven door latch A door latch mechanism for a domestic cooking appliance of the type wherein conventional thermal energy cooking and microwave energy cooking can be carried out in a single oven cavity, the mechanism including a rotatable oven door handle having a latch ca... | 04/04/1978 |
| 4081645 | Temperature controlled microwave oven The power supplied to the cooking cavity of a microwave oven is controlled in response to a preselected temperature of food placed therein. A temperature responsive probe is embedded in the food to be cooked, the probe including means for changing its sta... | 03/28/1978 |
| 4059742 | Microwave seal for combination cooking apparatus An oven adapted to cook foods by the use of either conventional thermal heating or by microwave heating, or both simultaneously, is disclosed which includes a microwave seal for preventing the emission of microwave energy beyond the cooking cavity. The mi... | 11/22/1977 |
| 4053730 | Microwave oven shaft seal A microwave oven having an energy stirrer including a drive shaft extending through a wall of the oven is disclosed. A microwave energy seal in the form of a metallic disc is provided to prevent energy leakage at the drive shaft aperture.... | 10/11/1977 |
| 4039918 | Control for rotatable storage unit A storage unit divided into a plurality of stations, is rotatable about a vertical axis to allow any given station to be turned to a position where the articles at that station can be retrieved. A control circuit is provided to allow an operator to select... | 08/02/1977 |
| 4026508 | Hanger bracket A hanger bracket adapted to secure wire merchandise hangers to perforated board is disclosed. The bracket has a plurality of communicating vertical and horizontal channels which enable it to accommodate hangers of various diameters.... | 05/31/1977 |
