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| Number | Title | Issue Date |
| 7851949 | DC converter A DC converter is connected to a DC source on its input side. On the output side, the DC delivers a converted DC voltage to at least one electric consumer via a cable connection. To improve such a DC converter in that it has a comparatively simple structural design ... | 12/14/2010 |
| 7433770 | Hydraulic fluid change indicating device for automatic transmission A hydraulic fluid change indicating device for an automatic transmission includes a first deterioration rate calculating unit; a deterioration acceleration coefficient calculating unit; and a thermal hydraulic fluid deterioration calculating unit for calculating a t... | 10/07/2008 |
| 6940414 | Pressure switch with electrical correction signal for adjusting threshold values In a pressure switch, which emits an electrical switching signal as a function of the magnitude of a pressure which is supplied to it, which electrical switching signal assumes a first value when the pressure is less than the threshold value and which assumes a seco... | 09/06/2005 |
| 6222284 | Multiphase power supply with series connected power cells with failed cell bypass A high output level is maintained in power supplies having multiple cells in each leg. Failed cells in any leg are bypassed to provide a current path through the respective leg. All of the unfailed cells are utilized while maintaining equal magnitude betw... | 04/24/2001 |
| 5982047 | Pressure switching device The invention relates to a pressure switching device of the type used in motor vehicles and includes a pressure sensor 21 arranged in a housing 3, which generates an electrical signal U according to the pressure p of a pressure medium or monitored fluid t... | 11/09/1999 |
| 5415263 | Safety switch assembly The safety switch assembly is designed to provide a switch assembly to a tool, such as a meat slicer, in order to prevent the operation of the tool without manually holding the secondary switch and the depression of a button. The assembly contains a contr... | 05/16/1995 |
| 5266839 | Adapter for asynchronous devices A synchronizing circuit includes two switches for synchronizing the feeding of documents of a document feeder to the insert path of an insertion machine which is operative in accordance with a predetermined machine cycle to establish a given level of vacu... | 11/30/1993 |
| 5070427 | Thermal switch for battery protection Lithium batteries are protected from a runaway condition marked by over-current and high temperature by a temperature sensor having a thermally conductive housing in thermal contact with all the cells of the battery and containing a fusible column which m... | 12/03/1991 |
| 4926063 | Square root digital-to-analog converter A twenty four bit digital-to-analog converter comprising three eight bit digital-to-analog converters. The outputs of the two least significant converters are proportioned and summed together into one amplifier to form a sixteen bit converter. The most si... | 05/15/1990 |
| 4591765 | Lamp control This invention is an electronic lamp control circuit for connection between a lamp bulb and a wall receptacle controlled by a wall switch. The lamp control circuit includes switching circuitry which permits complete control of the lamp from either the wal... | 05/27/1986 |
| 4510425 | Control device for pump apparatus for vehicular use A control device for a vacuum pump apparatus in which a hunting effect is substantially eliminated. A pressure-sensitive switch senses a negative pressure produced by a vacuum pump, the latter being driven by a d.c. motor. The switch has at least three co... | 04/09/1985 |
| 4474175 | Safety means for administration of anesthetic gas A control device in an anesthetic administering system which senses the dangerous condition of nitrous oxide flowing to the patient's breathing mask in the absence of oxygen flow to the mask and provides a warning signal so the condition is known and, thu... | 10/02/1984 |
| 4303836 | Audio silencer for radio and T-V sets A silencer adapted to suppress the audio output of a radio or television set during commercial breaks in a program. The silencer which requires no wiring changes in the set includes a probe insertable in the existing earphone jack. The probe is constitute... | 12/01/1981 |
| 4250434 | Pressure-responsive electric switch A pressure-responsive electric switch assembly provided with an elongated pneumatic tube of elastomeric foam material impermeable to air, one end of the tube being plugged and the other having a sleeve therein whose inner end is covered by a membrane to t... | 02/10/1981 |
| 4239979 | Membrane contactor Contactor comprising at least two fixed studs, at least one movable stud capable of making or breaking an electric contact between the two fixed studs, and at least one membrane which can deform under the action of a fluid. The movable stud is fastened to... | 12/16/1980 |
| 4112823 | Methods and apparatus for controlling an hydraulic cylinder Automated control apparatus for an intermittently extended hydraulic cylinder is disclosed which governs cylinder elongation such that the rate of elongation is essentially constant with respect to time. The control apparatus includes a preset continuousl... | 09/12/1978 |
| 4104540 | Lamp switch circuit A circuit and circuit elements are disclosed to operate a lamp independently from either a two-position wall-mounted switch or a two-position lamp-mounted switch.... | 08/01/1978 |
| 4082988 | Electric power plant for motor driven vehicles A battery operated electric power plant for motor driven vehicles powered by rechargeable electric storage batteries and one or more dynamoelectric devices capable of operation both as a motor for driving the vehicle and as a generator for recharging the ... | 04/04/1978 |
