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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 6903289 | Circuit breaker employing an illuminated operating handle A circuit breaker includes a housing having an opening, separable contacts within the housing, and an operating mechanism for opening and closing the separable contacts. The operating mechanism includes a generally transparent operating handle having a portion protr... | 06/07/2005 |
| 6768402 | Externally controllable circuit breaker An externally controllable circuit breaker includes a set of main contacts, an operating mechanism for opening and closing the main contacts; and a set of secondary contacts electrically connected in series with the main contacts. A control mechanism to open and clo... | 07/27/2004 |
| 6768404 | Circuit breaker and plunger assembly support structure including a positioning member A circuit breaker includes a housing, separable contacts disposed in the housing, a latchable operating mechanism structured to separate the separable contacts, and a magnetic trip mechanism coupled to the latchable operating mechanism. The magnetic trip mechanism i... | 07/27/2004 |
| 6765390 | Diagnostic wiring verification tester A tester for verifying the integrity of insulation in a branch circuit of a power distribution system. Two test circuits are included; the first providing an insulation test; and a second, a shared/grounded neutral test. In the insulation test, a 500-volt ac output ... | 07/20/2004 |
| 5359174 | Thermally conductive, insulating, arc-quenching coating compositions for current interrupters Effective arc-quenching is desired for current interrupters as defined to include circuit breakers, contactors, fuses and the like under conditions of operation where an electrical arc is produced that must be quenched to eliminate an undesirable current ... | 10/25/1994 |
| 5354953 | Cable holding device A cable holding device for holding a communication cable beside an electrical power outlet box. The cable holding device comprises a frame having a main portion and an integral base portion, extending at a right angle to the main portion of the frame, for... | 10/11/1994 |
| 5343174 | Electrical circuit interrupting device with means to break welded contacts The movable contact arm of a circuit breaker is mounted on a pivot pin by a slot which extends generally transverse to the longitudinal arm of the contact arm, so that when the contacts are welded, initial motion of the circuit breaker operating mechanism... | 08/30/1994 |
| 5341191 | Molded case current limiting circuit breaker A molded case circuit breaker having current limiting capabilities optimized for relatively smaller frame sizes. More specifically, one aspect of the invention relates to a two-piece carrier assembly for carrying the main and arcing contact arms which all... | 08/23/1994 |
| 5331501 | Electrical switching apparatus with digital trip unit and memory reset A microprocessor based switch such as a circuit breaker has a memory capacitor charged by the microprocessor to generate an analog equivalent of a digitally modelled heat state signal. A selected resistor discharges the capacitor at a rate which models a ... | 07/19/1994 |
| 5325315 | Process for auto calibration of a microprocessor based overcurrent protective device and apparatus Process and apparatus for calibrating an electrical device such as a circuit breaker, motor controller or monitor is taught. A precision power supply device is interconnected by way of appropriate input channels to the device to be calibrated for supplyin... | 06/28/1994 |
| 5323341 | Method of interchangeably using dip memory devices in a single socket A method of interchangeably using memory devices constructed from different memory technologies, and/or having different storage capacities, in a predetermined socket of an electrical circuit. The method includes the steps of determining which technology ... | 06/21/1994 |
| 5320167 | Air conditioning and refrigeration systems utilizing a cryogen and heat pipes A refrigeration system, which conditions the air of a conditioned space via heating and cooling cycles, includes a heat exchanger and, in a first embodiment, heat pipes. A cryogen is circulated through the heat exchanger during a cooling cycle. During a h... | 06/14/1994 |
| 5318409 | Rod pump flow rate determination from motor power A pump controller coupling the electric motor of a cyclically operating well pump to a power line is arranged to measure instantaneous power consumption of the motor, to integrate the power consumption over pump cycles, and to assess the performance of th... | 06/07/1994 |
| 5315840 | Air conditioning and refrigeration methods and apparatus utilizing a cryogen Methods and apparatus for controlling the air temperature of a conditioned space to a selected set point temperature, utilizing a supply of cryogen in liquid and vapor states. The two states are drawn from the supply and maintained in first and second sep... | 05/31/1994 |
| 5315229 | Minimum time delay filtering method for automatic voltage regulators An automatic voltage regulator senses and controls the terminal voltage of a separately excited generator by controlling the field current applied to the field winding. In order to improve the response time of the circuit, the circuitry relies on the phas... | 05/24/1994 |
| 5315471 | Coil current regulator with induced flux compensation in an electromagnetic contactor system The coil holding current of a contactor is regulated to the lesser of two measurements of coil current during each cycle of the full-wave rectified control voltage to compensate for induced flux in the coil generated by load current through the main conta... | 05/24/1994 |
| 5311927 | Air conditioning and refrigeration apparatus utilizing a cryogen A refrigeration system associated with a conditioned space to be controlled to a predetermined set point temperature via heating and cooling cycles. The refrigeration system includes a fluid flow path through which a predetermined liquid is circulated. Th... | 05/17/1994 |
| 5312142 | Connector for connecting a section of corrugated conduit to another component A method and apparatus for producing plastic parts with a resilient projection, such as connectors for corrugated tubing. The method comprises the steps of flowing plastic material on a core provided with a recess to mould the resilient projection, cammin... | 05/17/1994 |
| 5307230 | Circuit breaker with protection against sputtering arc faults A circuit breaker includes an electronic trip device which responds to sputtering arc-type faults. Level detectors compare the current in the protected circuit to a plurality of threshold levels and timers time the intervals that the current remains above... | 04/26/1994 |
| 5306643 | Method for detecting low levels of alkylbenzene or mineral oil in polyol ester lubricants in the compressors A method for detecting low level of alkylbenzene or mineral oil impurity in polyol ester lubricants for compressors. This method comprises mixing a mixture of alcohol and water with a sample of the lubricant and then observe the presence or absence of tur... | 04/26/1994 |
| 5305825 | Air conditioning and refrigeration apparatus utilizing a cryogen A refrigeration system associated with a conditioned space to be controlled to a predetermined set point temperature via heating and cooling cycles. The refrigeration system includes a fluid flow path through which a predetermined fluid is circulated. The... | 04/26/1994 |
| 5305234 | Thermal protection apparatus for a synchronous machine A synchronous machine is protected from closely spaced instances of excessive field current and an excessive volts/hertz ratio by a control system which models rotor and stator cooling to provide memory of recent periods of excessive heating. Maximum exci... | 04/19/1994 |
| 5304765 | Circuit breaker positive off interlock A molded case circuit breaker includes an interlock which prevents the operating handle from being moved from the on position after the main contacts have been welded together. By preventing the operating handle from being moved from the on position durin... | 04/19/1994 |
| 5303560 | Method and apparatus for monitoring and controlling the operation of a refrigeration unit Methods and apparatus for monitoring and controlling the operation of a refrigeration unit in a manner which eliminates the need for circuit breakers and fuses in control circuits which are instrumental in selecting and changing the operational mode of th... | 04/19/1994 |
| 5304755 | Retainer for mechanism operated cell switch in metal-clad switch gear An elongated retainer member pivotally mounted on the auxiliary contact operating mechanism of a drawout circuit breaker maintains a positive connection for the mechanism with the channel assembly of the motion transfer assembly which actuates auxiliary c... | 04/19/1994 |
| 5303160 | Load controller with digitally modeled overload protection and analog tracking of heat state during power off Microprocessor based apparatus for controlling an electrical load, such as a motor, includes an external capacitor for storing an analog equivalent of a digitally modeled heat state signal, such as the I2 t characteristic of the motor. The volt... | 04/12/1994 |
| 5300773 | Pulsed ionization ion mobility sensor An ion mobility sensor for obtaining measurements of concentrations of constituents of multicomponent gaseous samples. The sensor having an ionization region into which the sample is entered connected to a drift region, the regions being separated by a gr... | 04/05/1994 |
| 5296664 | Circuit breaker with positive off protection A positive off mechanism for a circuit breaker includes a pair of positive off levers slideable in slots in the side plates and extendable into the path of the operating handle to prevent movement of the handle to the off position when the contacts are we... | 03/22/1994 |
| 5295849 | Fuseholder with sequential power disconnect and fuse tension release mechanism The rotation of a power control arm on a fuse box is used to rotate a contact, sequentially disconnecting power to a fuse and spreading the tensioned jaws on a fuse clip to reduce the force needed to remove a flat fuse terminal from the clip.... | 03/22/1994 |
| 5295850 | Fuse holder with fuse release The tensioned jaws of a fuse clip are spread by a rotating a pin that rests in a slot in each of the jaws. The pin has opposed flat surfaces that define a position at which the jaws are not spread. The pin has a flange that rests in the slots, holding the... | 03/22/1994 |
| 5294794 | Automatic compensation for ion mobility sensor A system for compensating for changes in pressure and temperature in an ion mobility sensor has first and second electrodes positioned a selected distance apart, with a unidirectional electric drift field provided between the electrodes. An ionization sou... | 03/15/1994 |
| 5291745 | Method of improving temperature uniformity of a space conditioned by a refrigeration unit A method of operating a refrigeration unit to improve the uniformity of temperature distribution in a conditioned space, with the refrigeration unit including a refrigerant compressor and an evaporator fan driven at a selectable one of high and low operat... | 03/08/1994 |
| 5293142 | Ground fault circuit breaker with flat bus bars for sensing coils A ground fault circuit breaker has line and neutral bus bars extending through the center apertures of two laterally spaced toroidal coils to form the primaries of ground fault sensing transformers. The bus bars have flat center sections extending between... | 03/08/1994 |
| 5291603 | Microprocessor system with multiple interrupts masked for use in electronic control or monitoring of various solid-state products A microprocessor used in solid state products has multiple interrupts and a single read only memory (ROM) masked for two or more product programs. The logic state of an input pin is set to select the appropriate program. If there is an error in one progra... | 03/01/1994 |
| 5290982 | Circuit breaker with positive on/off interlock A pair of lock links straddling and pivoted on the same pin as the latchable cradle of a circuit breaker follow the toggle device of the breaker either by riding on the toggle knee pin or through a pin which bears against the edges of the toggle arms. The... | 03/01/1994 |
| 5291165 | Insulating barriers for circuit breaker bus bars and a ground fault circuit breaker incorporating same Insulating barriers for flat, confronting C-shaped bus bars with facing, depending end portions are integrally formed with a pair of confronting C-shaped insulating members conforming to the shape of the bus bars and joined by a pair of projections extend... | 03/01/1994 |
| 5289191 | Bipolar analog-to-digital conversion apparatus with unipolar current and voltage modes An integrated circuit incorporating an analog-to-digital (A/D) conversion subsystem having a current mode in which only negative analog currents are converted and a voltage mode in which only positive analog voltages are converted is adapted to produce bi... | 02/22/1994 |
| 5287705 | Air conditioning and refrigeration systems utilizing a cryogen A refrigeration system which controls the temperature of a conditioned space to a predetermined temperature range adjacent to a selected set point temperature SP via a cooling cycle which includes evaporation a cryogen, such as CO2 or N2 | 02/22/1994 |
| 5288643 | Quick method to distinguish alkylbenzene and naphthenic lubricants in compressors A method for the identification of whether a lubricant in a compressor is an alkylbenzene or a naphthenic oil. This method comprises adding 3,3-bis (p-hydroxyphenyl) phthalide and observing whether there is an absence or presence of turbidity.... | 02/22/1994 |
| 5285644 | Air conditioning and refrigeration apparatus utilizing a cryogen Methods and apparatus for controlling a conditioned space to a predetermined set point temperature, utilizing a supply of cryogen. Cryogen is drawn from the supply in a flow path to provide a cooling mode via a heat exchanger disposed in the flow path. A ... | 02/15/1994 |
