Patents by Inventor Gerhard Schwarz
Gerhard Schwarz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5486398Abstract: There is described a low flammability carpet floor covering comprising a backing material, a tied-in pile yarn, and a back finish, wherein the pile yarn comprises low flammability synthetic fibers, the backing material comprises normal or low flammability synthetic fibers, and the back finish comprises a polyurethane composed of the radicals of the formulae I to VII:--CO--A1--CO-- (I)--CO--A2--CO-- (II)(--O--).sub.n --A3--(COOH).sub.m (III)--O--B1--O-- (IV)--O--B2--(O--).sub.Type: GrantFiled: September 28, 1993Date of Patent: January 23, 1996Assignee: Hoechst AktiengesellschaftInventors: Manfred Weber, Gerhard Schwarz
-
Patent number: 5472763Abstract: There is described a recyclable carpet floor covering comprising a backing, a tied-in pile yarn and a back finish with or without a secondary backing adhered to the (primary) backing, wherein the pile yarn, the (primary) backing and a secondary backing comprise polyester fibers and the back finish for the (primary) backing and for adhering a secondary backing comprises a consolidating and adhering composition comprising a combination of 10-70% by weight of a water-soluble or -dispersible first polyester A, and 90-30% by weight of a water-insoluble second polyester B, There are further described a process for producing the recyclable carpet floor covering and also an aqueous preparation of the consolidating and adhering composition comprising the polyesters A and B and the use thereof for consolidating the carpet floor coverings and optionally adhering them to secondary backings.Type: GrantFiled: November 1, 1993Date of Patent: December 5, 1995Assignee: Hoechst AktiengesellschaftInventors: Gerhard Schwarz, Manfred Weber
-
Patent number: 5406469Abstract: An electronic switching power supply for supplying power to a load from an input voltage source, including a flyback converter with a transformer having its primary coil connected in series with the collector-emitter circuit of a first transistor in parallel arrangement with the input voltage source, while its secondary coil is connected in series with the load and a first diode, with the emitter of the first transistor being connected to chassis or reference potential through a first resistor while the base of the first transistor is connected to a control circuit (St), with a capacitor in parallel arrangement with the load, with the voltage across the junction (B) of the capacitor at the side remote from reference potential being of the same polarity as the voltage across the junction (A) of the first resistor and the first transistor.Type: GrantFiled: June 30, 1994Date of Patent: April 11, 1995Assignee: Braun AktiengesellschaftInventor: Gerhard Schwarz
-
Patent number: 5318903Abstract: A process for the production of dry, free-flowing, enzyme preparations by spraying aqueous enzyme dispersions, which may contain additives, in a spraying apparatus, which comprises the enzyme dispersion being sprayed in the presence of from 5 to 60% by weight, based on the content of enzyme in the dispersion, of a spray auxiliary composed of hydrophobic silica and/or a metal salt of a higher fatty acid at from 0.degree. to 50.degree. C., and drying the resulting particles loaded with spray auxiliary.Type: GrantFiled: June 4, 1992Date of Patent: June 7, 1994Assignee: BASF AktiengesellschaftInventors: Wolfgang Bewert, Gerhard Schwarz
-
Patent number: 5313828Abstract: A multi-component measuring disc wheel for vehicles is provided in which an annular measuring disc is held on an auxiliary flange of the specially designed rim by means of a plurality of stud bolts parallel to the axis. The stud bolts act as measuring cross-sections and are equipped with strain gauges. The measuring disc is held at a distance from the auxiliary flange and has spoke-type measuring webs which are also equipped with strain gauges. The inner edge of the measuring disc is bolted to a pot-shaped wheel adaptor which compensates for the axial distance between the measuring disc and the normal axial position of the bolt-on flange of the wheel disc of a conventional vehicle wheel and matches in the bolt-on region the bolt-on flange of a conventional vehicle wheel disc. A signal transmission device is rotatably mounted in or on the wheel adaptor and the stationary part of the signal transmission device is fixed by means of a movable linkage which is, however, fixed in the peripheral direction.Type: GrantFiled: October 9, 1992Date of Patent: May 24, 1994Assignee: Mercedes-Benz AGInventors: Horst Kotzle, Bernd Oelmann, Ulrich Schafer, Gerhard Schwarz
-
Patent number: 5308136Abstract: A visor shell is formed of two parts with a thin plastic sheet covering each part and another plastic sheet at the interface of the two parts.Type: GrantFiled: October 19, 1992Date of Patent: May 3, 1994Assignee: Eugen Zipperle GmbH & Co., KGInventors: Gerhard Schwarz, Hans-Georg Goletz, Lothar Stoczek
-
Patent number: 5290567Abstract: Pulverulent products composed of a water-insoluble core substance and of a protective covering, are obtainable bydispersing the core substance in an aqueous solution of amylose or a starch with an amylose content of more than 40% by weight as film-forming polymer for the protective covering,spraying this dispersion using hydrophobic silica as auxiliary andsubsequently drying the sprayed particles.Type: GrantFiled: June 4, 1992Date of Patent: March 1, 1994Assignee: BASF AktiengesellschaftInventors: Joachim U. Schneider, Gerhard Schwarz, Paul Grafen, Wolfgang Bewert, Horst Schumacher
-
Primary switched-mode DC-DC converter with summed input current and input voltage responsive control
Patent number: 4763061Abstract: The invention is directed to a switching power supply with a primary switched-mode direct-current converter, in which the conductivity of a transistor (2) driving the base of a switching transistor (1) is operated on by the sum of two control signals. The sum of these control signals is generated by two low-resistance voltage sources in series arrangement, the sources being proportional to the emitter current and the input voltage, respectively.Type: GrantFiled: April 15, 1987Date of Patent: August 9, 1988Assignee: Braun AktiengesellschaftInventor: Gerhard Schwarz -
Patent number: 4726392Abstract: A drainage canal assembly includes a canal housing for receiving electrical components, a drainage canal in the form of a syphon formed in the canal housing, and a check valve disposed in the drainage canal permitting liquid to leave the canal housing but preventing liquid and dust from entering.Type: GrantFiled: April 16, 1986Date of Patent: February 23, 1988Assignee: Brown, Boveri & Cie AGInventors: Gerhard Schwarz, Herbert Eckhard
-
Patent number: 4706009Abstract: The invention is directed to an electronic switching power supply for the controlled charging of a storage battery (61) with a boost- or trickle-charge current in dependence upon the charge condition of the battery, including a primary-pulsed blocking oscillator type converter in which the primary coil (51) of a transformer (5) is connected in series with a switching transistor (1) while its secondary coil (52) is connected in series with the storage battery (61) and a diode (31). Provided in parallel with the series connection comprising the storage battery (61) and the diode (31) are a capacitor (12) and a further diode (32) connected in series, with a switching arrangement (71) provided in parallel with the capacitor (12) being connected via a decoupling arrangement to the base of a second transistor (2) determining the turn-on period of the first transistor (1).Type: GrantFiled: December 15, 1986Date of Patent: November 10, 1987Assignee: Braun AktiengesellschaftInventor: Gerhard Schwarz
-
Explosion-proof or flame-proof plug having a transformer disposed in a compression-resistant chamber
Patent number: 4677411Abstract: An explosion-proof plug includes a first casing part having two ends and an outer wall having an edge and defining a compression-resistant annular chamber being open toward one of the ends, an annular transformer disposed in the annular chamber, a cover secured to the first casing part covering the annular chamber and the transformer, a second substantially bowl-shaped casing part adjacent the edge of the outer wall, the second casing part and the cover together defining a first connection space with increased security as compared to other portions of the plug for receiving connecting cables to be connected to the transformer, a third casing part securely connected to the first casing part defining a second space of increased security, and plug pins being held in the third casing part and connected to the transformer.Type: GrantFiled: April 12, 1985Date of Patent: June 30, 1987Assignee: Brown, Boveri & Cie AGInventors: Heinz Hofmann, Gerhard Schwarz -
Patent number: 4647141Abstract: An intrinsically safe safety barrier for attachment to a standard profiled supporting bar, includes a housing having a narrow shell-shaped housing part with narrow sides and wide sides, one of the wide sides being open, a circuit board disposed in the housing part, terminals disposed in the housing part and connected to the circuit board, a potential-compensating bar disposed in the housing part and connected to the circuit board, casting resin filling the housing part after the circuit board, terminals and potential-compensating bar have been inserted therein, and a cover attached to the housing part closing the open side thereof before the casting resin hardens, one of the narrow sides of the housing part having resilient formed-out portions thereon for snapping the housing part to the standard profiled supporting bar, and a method of producing the same.Type: GrantFiled: April 2, 1984Date of Patent: March 3, 1987Assignee: Brown, Boveri & Cie, AG.Inventors: Albert Muench, Gerhard Schwarz
-
Patent number: 4546304Abstract: A constant voltage or constant current output circuit is disclosed which can be operated with input voltages which fluctuate sharply at nearly any frequency. A pulse width modulated (PWM) switching transistor is used with a choke inverter. The PWM switching transistor is input and output level responsive. A second transistor is connected to the switching transistor and is used to block operation of the switching transistor. The electronic device according to the invention supplies a constant output voltage even at input voltages between 70 and 264 volts and stimulates oscillation absolutely reliably even under maximum load. In addition, the device is suitable for DC and AC voltages of any frequency and merely requires a simply designed voltage regulating circuit that uses only ordinary components.Type: GrantFiled: March 23, 1984Date of Patent: October 8, 1985Assignee: Braun AktiengesellschaftInventor: Gerhard Schwarz
-
Patent number: 4523139Abstract: An electronic switching power supply for supplying power to an electrical load from a variable voltage level AC or DC voltage source having first and second terminals, the power supply including a transformer having a primary coil and a secondary coil, a first terminal of the secondary coil being connected to the electrical load, a first transistor connected in series with the primary coil, a first diode connected in series with the secondary coil and the electrical load, a first capacitor connected between the base of the first transistor and a second terminal of the secondary coil, a second transistor, the collector-emitter line of which is connected across the voltage source, a first resistor connected between the first terminal of the secondary coil and the collector of the second transistor, a second resistor connected between the first terminal of the secondary coil and the emitter of the first transistor, and a discharge circuit connected between the first capacitor and the electrical load, whereby theType: GrantFiled: May 11, 1983Date of Patent: June 11, 1985Assignee: Braun AktiengesellschaftInventors: Gerhard Schwarz, Gunther Bergk
-
Patent number: 4376263Abstract: A battery charging circuit having an electromagnetic transformer with primary and secondary coils, a rectifier connected between the secondary coil and the battery, a first transistor connected in series with the primary coil and a resistor to form a circuit in parallel with a power source, the base of the first transistor being connected to the secondary coil, and a second transistor electrically connected to the base of the first transistor. The first transistor has a high switching frequency, and the battery is charged with a constant reverse current during its blocking phase, regardless of the power source voltage. The first transistor is protected from reverse kick-back voltage pulses induced during its blocking phase by the provision of a diode and Zener diode connected in series across the primary coil and a capacitor interposed between the secondary coil and the base of the first transistor.Type: GrantFiled: January 27, 1981Date of Patent: March 8, 1983Assignee: Braun AktiengesellschaftInventors: Kurt Pittroff, Gerhard Lang, Gerhard Schwarz
-
Patent number: 4202557Abstract: A drilling device with an arrangement for the detachable connection of a drill, especially a rock drill, percussion drill, hammer drill, and the like, to a receiving device, e.g. a drive head, which has a longitudinal bore for receiving the shank of the drill, and also has a driving part which is drivingly connectable to a drilling machine and is coaxial with the longitudinal bore. The drilling device furthermore comprises a drive transmitting member movable in the driving part transverse in the longitudinal bore of the receiving device. The drive transmitting or follower member is arranged to engage a bottom face of a recess in the shank of the drill. This recess has a segment-shaped cross section and has a bottom extending continuously over the entire corresponding width of the drill shank.Type: GrantFiled: November 13, 1978Date of Patent: May 13, 1980Assignee: Hawera Probst GmbH & Co.Inventors: August Haussmann, Siegfried Klaissle, Hermann Hugger, Bernhard Moser, Walter Muller, Wolfgang Peetz, Anton Scheuch, Gerhard Schwarz
-
Patent number: 4199247Abstract: A photographic diaphragm of the iris type, having two sets or series of diaphragm leaves instead of the usual single set. Each leaf is relatively narrow in a direction radially with respect to the optical axis, thereby reducing the radial dimensions of the annual space necessary to receive the leaves when the diaphragm is fully open. During a closing down movement to a smaller aperture, both sets or series of diaphragm leaves swing inwardly simultaneously during the first part of a closing movement; then one set of leaves remains stationary while the other set continues to swing inwardly to close the aperture down to as small a size as desired. The two series of leaves are in separate planes slightly spaced from each other in the direction of the optical axis. The diaphragm is preferably of the spring back type, which will spring back automatically to a predetermined aperture after it has been opened wide for focusing purposes.Type: GrantFiled: June 12, 1978Date of Patent: April 22, 1980Assignee: Carl Zeiss StiftungInventor: Gerhard Schwarz
-
Patent number: 4193538Abstract: An account is given of a centrifuge apparatus with a plate-like rotor whose outer edge is used as stops for radially placed sample tubes. For keeping them in position against the stops the radially inner ends of the tube are pressed downwards in the middle of the rotor plate for changing the slope of the tubes to go through a dead center position. A hub in the middle of the rotor is joined with a driving shaft by a coupling. A nosepiece for use with a locking part is arranged on a part, fixedly joined to the driving shaft, of the coupling.Type: GrantFiled: May 4, 1978Date of Patent: March 18, 1980Assignee: Compur-Electronic Gesellschaft mit beschrankter HaftungInventor: Gerhard Schwarz
-
Patent number: 4130358Abstract: A photographic camera has an interchangeable lens movable from a first or fully seated position on the camera body to a second disengaged position whereupon it may be removed from the camera body. An electric warning signal device has a circuit containing a switch responsive to the position of the interchangeable lens in such a way that the switch is closed to activate the warning signal as soon as the interchangeable lens begins to move away from its fully seated position. In a further development of the invention there is also a second switch in series with the first switch, and this second switch is kept closed so long as the interchangeable lens is in its first position or is in an intermediate position between its first and second positions, and this second switch is opened when the interchangeable lens reaches its second position disengaged from the camera body and ready to be removed therefrom.Type: GrantFiled: November 8, 1976Date of Patent: December 19, 1978Assignee: Carl Zeiss StiftungInventors: Rudolf Lang, Gerhard Schwarz
-
Patent number: D269416Type: GrantFiled: May 7, 1981Date of Patent: June 21, 1983Assignee: Compur-Electronic GmbHInventors: Erich Retzer, Gerhard Schwarz