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| Number | Title | Issue Date |
| 5337590 | Method and apparatus for bending tubes using split bend die Method and apparatus for bending serpentine heat exchanger tubes using a split bend die having a relatively short upper die section with a straight back end. After the tube is bent in conventional manner using a clamp die and a pressure die, the bend die ... | 08/16/1994 |
| 5339078 | Digital to analog converter switch circuit A digital-to-analog converter switch provides substantially equal propagation delays for both high-to-low and low-to-high transitions of the binary input signal. A ground path transistor and an output transistor are connected to a common node and operated... | 08/16/1994 |
| 5331558 | Autopilot having an adaptive deadband feature A marine autopilot having a deadband feature to reduce ineffectual rudder movement and unnecessary wear on the rudder and associated drive apparatus. In a first deadband operation, four deadband values are computed based on various parameters in order to ... | 07/19/1994 |
| 5327398 | Fishfinder with readout of bottom coverage A fishfinder having a real time or A-scope display with a numerical readout indicating the diameter of the transducer beam on the bottom of the water body. Further, an indicia indicating the position of the boat and downwardly diverging lines correspondin... | 07/05/1994 |
| 5321405 | Radio frequency energy jamming system A transmitter/receiver system is provided wherein a transmitter of such system produces a transmitted signal frequency modulated in accordance with the level of a modulating signal and a receiving antenna has an output thereof coupled to a receiver throug... | 06/14/1994 |
| 5317281 | Slew rate booster circuit A circuit for increasing the slew rate of linear amplifier circuits. The circuit comprises two NPN and PNP transistor pairs arranged so that when the voltage level difference between the amplifier output and input voltage exceeds the base to emitter volta... | 05/31/1994 |
| 5315170 | Track and hold circuit A track and hold circuit for producing an output voltage having a level related to the voltage level of an input voltage fed to the circuit during a track mode and for maintaining the level of the output voltage constant during a hold mode. The circuit in... | 05/24/1994 |
| 5301653 | Gas range having down draft with automatic shutoff during ignition A gas surface range having a downdraft ventilation system with automatic shut off during ignition. A relay is activated by current flowing to the spark coil of the electrical igniter, and has contacts connected in series with the blower motor of the downd... | 04/12/1994 |
| 5284041 | Method for bending tubes using split die Method and apparatus for bending metal tubes such as for furnace heat exchangers. After the bend die is rotated 180° to make a bend, an upper section of the bend die is split from a lower section, and the upper section is then rotated approximately 90°.... | 02/08/1994 |
| 5280218 | Electrodes with primary and secondary emitters for use in cross-field tubes A cathode of a crossed field device includes a first electrode and a second electrode disposed about and dielectrically spaced from the first electrode. In a preferred embodiment the electrode comprises a pair of electrodes, a first one of the pair being ... | 01/18/1994 |
| 5277703 | Method and apparatus for removing radon decay products from air Method and apparatus for removing radon decay products wherein a fan directs air through a conductive cylinder that is grounded. Positioned axially within the cylinder is one or more cylindrical brushes, each having a shaft and radially extending conducti... | 01/11/1994 |
| 5274339 | Gain compensation circuit A circuit for compensating for GaAs FET amplifier gain variations over a frequency band as a function of temperature. The circuit includes a passive equalizer circuit having a fixed gain over the frequency band and an active equalizer circuit having a gai... | 12/28/1993 |
| 5272302 | Microwave oven with improved cooking uniformity A microwave oven having microwave absorbing material disposed in a top portion of the microwave oven cooking cavity above a grease shield. By absorbing reflected microwave radiation, this feature reduces the tendency of overcooked edges, particularly in l... | 12/21/1993 |
| 5268701 | Radio frequency antenna An improved dual polarized antenna element for use in planar array antennas. The antenna element includes a conductive sheet having a forwardly positioned notch and a pair of spaced rearwardly extending slot portions formed therein. The notch is adapted f... | 12/07/1993 |
| 5257516 | Washing machine A washing machine having the cabinet decoupled from the suspension system in order to eliminate undesirable resonance mode walking conditions. The cabinet is frictionally attached to the washer supporting feet. With this arrangement, the effect of the cab... | 11/02/1993 |
| 5257448 | Clothes dryer with unitary bulkhead A bulkhead for a tumbler clothes dryer wherein the bulkhead panel is stamped as a unitary part from a single metal blank on a progressive die. The bulkhead panel includes a cylindrical plug portion which fits inside the tumbler drum, and four mounting bra... | 11/02/1993 |
| 5249440 | Washing machine A washing machine having improved resistance toward frictional walking. The washer comprises a cabinet, a tub assembly disposed in the cabinet for processing a wash load and a suspension including a truss-like pedestal for supporting the tub assembly and ... | 10/05/1993 |
| 5224007 | Current window detection circuit A ground fault interrupt circuit with an improved current window detector. The current window detector works by first rectifying the input current in a pair of current mirrors connected in back to back fashion in the feedback path of the input amplifier. ... | 06/29/1993 |
| 5222552 | Tubular heat exchanger and method for bending tubes The method of bending relatively thin wall tubing to form a tubular heat exchanger that has relatively tight bends with controlled wrinkles. For example, 1.75-inch outer diameter stainless steel tube may have a wall thickness of 0.035 inches and be bent u... | 06/29/1993 |
| 5220168 | Method and apparatus for determining moisture content of materials Method and apparatus for determining moisture content of materials by irradiating a sample of unknown moisture content with a narrow frequency band of light at a first wavelength during a first time period and a narrow frequency band of light of a second ... | 06/15/1993 |
| 5215367 | Refrigerator door hinge A refrigerator door hinge including a bracket connected to and extending forwardly from the face of the cabinet on the side to which the door opens. The bracket includes an upper horizontal plate supporting the door, and a lower horizontal plate with a th... | 06/01/1993 |
| 5214498 | MMIC package and connector A package for electronic components, especially MMIC components, is disclosed. The package is constructed from layers of ceramic cofired to form an annular piece. Metal pieces are brazed onto the top and bottom of the annular piece to hermetically seal th... | 05/25/1993 |
| 5211037 | Controller for washing machine with alternately reversing drive motor A controller for a washing machine with an alternately reversing drive motor wherein an electromechanical timer interfaces in conventional manner to electrical devices, and also switches line voltage to predetermined ones of a plurality of control lines t... | 05/18/1993 |
| 5203315 | Gas convection oven with dual function burner A gas convection oven having a radiant burner and fuel feeding apparatus which enables the single burner to be operated in either a broil mode or a bake mode. In the broil mode, the radiant burner is operated in conventional manner with the flame being he... | 04/20/1993 |
| 5201604 | Field configurable sonic grade control A sonic grade control device for maintaining a leveling instrument of a paver at a constant distance from a datum. The device transmits and receives a sonic signal to provide first and second time periods corresponding to the round trip travel time of a s... | 04/13/1993 |
| 5200590 | Apparatus and method for making microwave popcorn Apparatus and method for popping high yield popcorn using a bag having a substantially rectangular cross section as manufactured using a conventional bag machine. A base supports the bag on edge with at least one joining panel being inclined such as, for ... | 04/06/1993 |
| 5195647 | Clothes dryer door assembly and method for reversing mounting side A clothes dryer door assembly adapted for mounting in alternate positions so that the door assembly can be made to open from either side. The door assembly includes an outer panel to which a handle, latching mechanism, and hinges are mounted, and inner li... | 03/23/1993 |
| 5142895 | Method for bending tubes The method of bending relatively thin wall tubing to form a tubular heat exchanger that has relatively tight bends with controlled wrinkles. For example, 1.75-inch outer diameter stainless steel tube may have a wall thickness of 0.035 inches and be bent u... | 09/01/1992 |
| 5138658 | Subscriber line interface circuit providing regulated current A subscriber line interface circuit that provides regulated current to telephone subscribers in an improved manner reducing the amount of power required to operate while maintaining a constant current source. The current to the telephone subscribers flows... | 08/11/1992 |
| 5119645 | Washing machine having improved suspension and manufacturability A washing machine includes a mid-level pivot and traverse suspension arrangement and a modular assembly. A support having a central aperture is spaced from the washing machine base by a plurality of upstanding legs. The modular assembly, including a drain... | 06/09/1992 |
| 5119379 | Method and apparatus for fault reporting A method and apparatus for reporting faults on a control line running through a plurality of processors to a control processor. Each processor having a failure provides a unique address onto the control line. The addresses are then sequentially shifted th... | 06/02/1992 |
| 5117658 | Washing machine having improved out-of-balance performance A washing machine having a mid-level pivot and traverse suspension system. The washing machine includes a tub assembly disposed over a support, with the assembly having a center of mass disposed at approximately the same axial position as the typical out-... | 06/02/1992 |
| 5113562 | Method for reversing mounting side of clothes dryer door assembly A clothes dryer door assembly adapted for mounting in alternate positions so that the door assembly can be made to open from either side. The door assembly includes an outer panel to which a handle, latching mechanism, and hinges are mounted, and inner li... | 05/19/1992 |
| 5115375 | Snap-in retainer sleeve A retainer sleeve having a cylindrically curved wall of resilient material spaced radially from its longitudinal centerline for defining a tapered leading end portion, a midportion and an opposing trailing end portion of the sleeve. The defining wall has ... | 05/19/1992 |
| 5101645 | Suspension system for automatic washing machine A suspension system for an automatic washing machine wherein multiple independent modes of motion are provided, and the springs biasing the respective modes are selected so that the critical frequencies (i.e. maximum excursions) of the modes do not occur ... | 04/07/1992 |
| 5100213 | Vertical sliding chiller compartment door A vertical sliding door for a compartment within the main door of a refrigerator. A frame is positioned adjacent the front of the door liner and has opposing vertical U-shaped channels. The sliding door includes a cover portion having laterally extending ... | 03/31/1992 |
| 5097802 | Condensing furnace with submerged combustion A high efficiency furnace having a substantially continuous wet heat exchanger wherein such continuous wet operation is provided by raising the dew point of the combustion products by submerged combustion before introduction into said head exchanger. That... | 03/24/1992 |
| 5098317 | Slip resistant connective device An interlock device having a slip resistant feature. A strip conductor is disposed in a dielectric housing and is electrically connected to a tip terminal plug. The strip conductor has an angled end distal from the tip terminal plug. A spring clamp is dis... | 03/24/1992 |
| 5097675 | Air flow control for multi-port refrigerator duct An air flow control for a multi-port refrigerator duct that conveys cold air from the evaporator chamber to a plurality of storage chambers within the fresh food compartment. The duct has a baffle providing individual branches for each storage chamber suc... | 03/24/1992 |
| 5097268 | Radar apparatus and method for enhancing the display of moving targets A radar system that enhances the display of moving targets by using negative scan-to-scan correlation to determine which pixels will be displayed at the brightest level. More specifically, a bit image stores a multi-bit scan-to-scan correlated history for... | 03/17/1992 |
