Gries
Aaron Gries, Perrysburg, OH US
Patent application number | Description | Published |
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20160033037 | PARKING LOCK MECHANISM FOR A TRANSMISSION - A parking lock mechanism having a motor, an actuation shaft, an engagement cam, a release cam, a cam biasing member, a pawl member and a lock gear. The engagement cam has a first side, a second side and a perforation there through. An outer edge of the engagement cam has a contact portion and an engagement portion. The release cam has a first side, a second side and a perforation there through. An outer edge of the release cam has a release member and an engagement portion. The cam biasing member has a first end, a coil portion and a second end. The pawl member has a pivot perforation, an engagement end, a locking protuberance and a sensor protuberance. The pawl member is disposed adjacent the engagement cam and the release cam. The lock gear has a plurality of inner splines and outer teeth. | 02-04-2016 |
David A. Gries, Indianapolis, IN US
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20150183975 | LOW TEMPERATURE VIBRATION DAMPING PRESSURE SENSITIVE ADHESIVES AND CONSTRUCTIONS - This disclosure relates to viscoelastic damping materials and constructions which may demonstrate low temperature performance and adhesion and which may be used in making vibration damping composites. Viscoelastic damping materials and constructions may include polymers or copolymers of monomers according to formula (I): CH | 07-02-2015 |
Gerhard Gries, Coquitlam CA
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20110099886 | Controlling Bedbugs With Synthetic Pheromones And/Or Infrared Radiation - Disclosed are methods for attracting and thereby controlling bedbugs. One volatizes a synthetic pheromone and generates infrared radiation adjacent the location and exposes bedbugs thereto. The pheromone volatizer and/or radiation generator are | 05-05-2011 |
Gerhard G. Gries, Coquitlam CA
Patent application number | Description | Published |
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20090069407 | COMPOUNDS, COMPOSITIONS AND METHODS FOR REPELLING BLOOD-FEEDING ARTHROPODS AND DETERRING THEIR LANDING AND FEEDING - This invention relates to compositions of one or more compounds that incorporate one or more allyl sulfide, allyl disulfide or allyl polysulfide moieties, or one or more allyl sulfide, allyl disulfide or allyl polysulfide moieties and one or more hydroxyl groups, used in effective amount in formulations, including emulsions, to repel blood-feeding ectoparasitic arthropods, including mosquitoes, and to deter them from landing and feeding when applied to the skin, clothing or environment of animals, including humans. Said compounds can include, but are not limited to, 8-allyl-sulfanyloctan-1-ol. This invention also relates to compositions comprising one or more of said compounds in further combination with other arthropod repellent and deterrent compounds, including vanillin. These compounds may be formulated with inert ingredients to form a liquid, gel, paste, soap, spray, aerosol or powder. | 03-12-2009 |
20110251270 | COMPOUNDS AND METHODS FOR REPELLING BLOOD-FEEDING ARTHROPODS AND DETERRING THEIR LANDING AND FEEDING - This invention relates to a group of compounds for repelling blood-feeding ectoparasitic arthropods, and a method of deterring their landing and feeding on animals including humans, by applying in one or more formulations compounds that incorporate one or more sulfide and one or more hydroxyl groups to the skin, clothing or environment of animals, including humans. A method of repelling and deterring landing and feeding by blood-feeding arthropods on an animal by applying in effective amount one or more compounds that incorporate alkyl sulfide and alcohol moieties, or alkyl sulfide and amide moieties, or alkyl sulfide and amide moieties to the skin, clothing or environment of an animal. | 10-13-2011 |
20150128479 | METHODS AND APPARATUS FOR ATTRACTING RATS - An acoustic signal for attracting rats comprising a playback recording or synthetic generation of vocalizations of rats or mice is provided. The vocalizations may be of rat pups, and may be characterized by sonic frequency components in the range of 1.8-7.5 kHz and/or ultrasonic frequency components in the ranges of 21-24 kHz, 40-50 kHz and/or 60-96 kHz. The vocalizations may be of adult male rats, including courting adult male rats, characterized by sonic frequency components in the range of 15-20 kHz and/or ultrasonic frequency components in the range of 20-100 kHz. The vocalizations may be of adult female mice, including nursing adult female mice, characterized by sonic frequency components in the range of 8-12 kHz and/or ultrasonic frequency components in the range of 25-100 kHz. | 05-14-2015 |
Gerhard J. Gries US
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20160100575 | NEW COMPOSITIONS AND METHODS FOR ATTRACTING AND STIMULATING FEEDING BY MICE AND RATS - This invention describes novel food bait compositions that can be used alone or in combination with blends of attractive compounds to induce attraction and feeding by mice and rats. Said compositions and blends can be used to induce mice and rats to be captured in traps or to approach and remain in a location where they will be exposed to a rodenticide. | 04-14-2016 |
Jason R. Gries, Southbend, IN US
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20140174489 | HOUSEHOLD APPLIANCE HAVING ANTENNAS - A household appliance for treating an item according to at least one automatic cycle of operation includes multiple antennas for transmitting and receiving data with an external network. The multiple antennas can be coupled with a radio also located within the appliance. | 06-26-2014 |
Jean-Philippe Gries, Colmar FR
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20150108111 | ELECTRIC HEATER - An electric heater for an automobile vehicle, with an electronic controller and a heat transmitting net, whereby the heat transmitting net contains a multitude of PTC-heating elements, a multitude of contact sheets, a multitude of heat dissipating fins and a multitude of distance elements. At least one PTC-heating element and at least one distance element is arranged between two adjacent contact sheets, whereby the PTC-heating elements and the distance elements between the adjacent contact sheets and the adjacent contact sheets themselves form a heating element, whereby the heating elements are connected to the electronic controller through connectors, which are arranged at the electronic controller and are connected to a power supply, whereby the heat transmitting net is divided in a first area, which contains only distance elements, and a second area, which contains PTC-heating elements and/or distance elements. | 04-23-2015 |
20150108112 | ELECTRIC HEATER - An electric heater for an automobile vehicle, with an electronic controller and a heat transmitting net, whereby the heat transmitting net contains a multitude of PTC-heating elements, a multitude of contact sheets and heat dissipating fins, whereby the PTC-heating elements are respectively arranged between two adjacent contact sheets and form a heating element with the contact sheets whereby some of the contact sheets are connected to connectors, which are arranged at the electronic controller and are connected to either a positive pole of a power supply or a negative pole of a power supply and are arranged in an alternating order, whereby the quantity of connectors that are connected to a positive pole of a power supply and the quantity of connectors that are connected to a negative pole of a power supply differs by one. | 04-23-2015 |
20150108117 | HEATER - A heater, particularly for a motor vehicle, having at least one heating element for heating air and a control unit, which has a control circuit, arranged on a printed circuit board, for controlling the at least one heating element, whereby the at least one heating element has ribs and a contact strip, whereby a contact strip section is arranged on the circuit board of the control circuit and forms a connection between the at least one heating element and the control circuit. | 04-23-2015 |
20150156820 | ELECTRIC HEATER - An electric heater for an automobile vehicle, having at least one heating element and at least one circuit board, with the circuit board being connected to a control unit and/or to a power supply and having at least one contact area through which an electrical connection between a heating element and a control unit and/or a power supply can be realized, the heating element possessing at least one PTC-heating element, with the heating element being connected to the circuit board with at least one connecting element, whereby the first connecting element features at least one protruding element and the contact area offering at least one through hole, with the at least one protruding element being insertable into the at least one through hole of the contact area. | 06-04-2015 |
20150156822 | ELECTRIC HEATER - An electric heater for an automobile vehicle, with at least one heating element and with at least one circuit board, whereby the circuit board has at least one contact area through which an electrical connection between a heating element and a power supply can be realized. The heating element has at least one PTC-heating element, whereby the heating element can be clipped to the circuit board via a connector clip, and whereby the connector clip has two flexible extensions, which are arranged opposed to each other. | 06-04-2015 |
20150296566 | ELECTRICAL HEATING DEVICE - An electrical heating device for a motor vehicle, which includes at least one heating element and which includes at least one printed circuit board, the printed circuit board having at least one contacting area for establishing an electrical connection between the heating element and an energy source, the heating element having a plurality of PTC heating elements, which are electrically conductively connected to each other by a contact element, the contact element of the heating element being disposed at a distance from the contacting area, an electrically conductive connection between the contact element and the contacting area being established with the aid of a plurality of conductor strands. | 10-15-2015 |
Jeffrey J. Gries, Munroe Falls, OH US
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20120325165 | DUAL PATH PARALLEL SUPERHEATER - A dual-path parallel superheater includes a drum for delivering steam, a steam receiving apparatus opposite the drum for receiving steam, a first surface and a second which receive steam from the drum to provide first and second paths for superheating the steam before delivering it to the steam receiving apparatus. There are also spray attemperators along the first and second paths. | 12-27-2012 |
20130192542 | SPLIT PASS ECONOMIZER BANK WITH INTEGRATED WATER COIL AIR HEATING AND FEEDWATER BIASING - An apparatus for using a water coil air heater with a single bank economizer. A boiler economizer arrangement includes an economizer bank which has separate hot pass bank and cold pass bank economizer portions in a parallel arrangement, each facing the same flow of hot flue gas. Feedwater enters the cold pass bank economizer where it is heated by the hot flue gas, and then flows to a water coil air heater away from the hot flue gas. The feedwater dissipates heat energy in the water coil air heater which may be used to heat air bound for combustion. The feedwater continues into the hot pass bank economizer portion of the economizer arrangement where it absorbs additional heat from the flue gas. The heated feedwater flows out of the economizer arrangement and may be subject to additional heating by a boiler or other heat exchanger. | 08-01-2013 |
Mark Gries, Milwaukee, WI US
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20140361613 | System and Method for Reducing Reactive Current on a Common DC Bus with Multiple Inverters - A system configured to reduce the amplitude of reactive current present on a DC bus shared by multiple inverters is disclosed. The start of the switching period for the modulation routines of each inverter is synchronized, and a carrier phase angle is determined for a carrier signal within each of the inverters. The modulation routine of each inverter generates a reactive current on the shared DC bus. By controlling the carrier phase angle for each inverter, the reactive current of a first inverter may be generated at a phase angle that is offset from the phase angle of the reactive current generated by a second inverter. As a result, the reactive current from the first inverter cancels at least a portion of the reactive current from the second inverter, reducing the total reactive current present on the DC bus. | 12-11-2014 |
Mark A. Gries, Milwaukee, WI US
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20130119901 | System for Managing DC Link Switching Harmonics - A distributed motor drive system includes a power management module and multiple inverter modules integrated with the motors and located on a machine or process remote from the power management module. The power management module distributes DC voltage and command signals to each of the inverters. The DC voltage is distributed between modules via a DC link cable. The integrated inverters execute switching routines to convert the DC voltage to an AC voltage suitable for controlling the motor. Each of the power management module and the inverters includes a portion of the DC bus capacitance. The distributed motor drive system also includes a link inductance between the power management module and the inverters to limit the amount of reactive current generated by the inverters. | 05-16-2013 |
20130119902 | System and Method for Managing DC Link Switching Harmonics - A distributed motor drive system includes a power management module and multiple inverter modules integrated with the motors and located on a machine or process remote from the power management module. The power management module distributes DC voltage and command signals to each of the inverters, where the DC voltage is distributed between modules via a DC link cable. The integrated inverters execute switching routines to convert the DC voltage to an AC voltage suitable for controlling the motor. Each of the power management module and the inverters includes a portion of the DC bus. The current on the DC link cable is monitored and general bus utilization as well as overload conditions are reported. | 05-16-2013 |
20140285120 | System and Method for Managing DC Link Switching Harmonics - A distributed motor drive system includes a power management module and multiple inverter modules integrated with the motors and located on a machine or process remote from the power management module. The power management module distributes DC voltage and command signals to each of the inverters, where the DC voltage is distributed between modules via a DC link cable. The integrated inverters execute switching routines to convert the DC voltage to an AC voltage suitable for controlling the motor. Each of the power management module and the inverters includes a portion of the DC bus. The current on the DC link cable is monitored and general bus utilization as well as overload conditions are reported. | 09-25-2014 |
Mark Alan Gries, Wauwatosa, WI US
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20130119913 | INTEGRATED DRIVE MOTOR POWER INTERFACE - An integrated drive motor (IDM) power distribution architecture utilizes an IDM power interface module (IPIM) to create a control voltage that is distributed to all the IDMs in a network. This power distribution may be accomplished along a hybrid cable, for example, that includes both signal conductors and power conductors. The IPIM is capable of detecting short circuits and/or overload conditions and disabling the power supply to the IDMs. Additionally, a second power supply may be utilized in the IPIM such that when the power supply to the IDMs is deactivated, the IPIM may remain functional, for example, to report one or more fault conditions to the user. Additionally, this reporting of fault status may be accomplished via a user display integrated with or coupled to the IPIM. | 05-16-2013 |
20150042162 | INTEGRATED DRIVE MOTOR POWER INTERFACE - An integrated drive motor (IDM) power distribution architecture utilizes an IDM power interface module (IPIM) to create a control voltage that is distributed to all the IDMs in a network. This power distribution may be accomplished along a hybrid cable, for example, that includes both signal conductors and power conductors. The IPIM is capable of detecting short circuits and/or overload conditions and disabling the power supply to the IDMs. Additionally, a second power supply may be utilized in the IPIM such that when the power supply to the IDMs is deactivated, the IPIM may remain functional, for example, to report one or more fault conditions to the user. Additionally, this reporting of fault status may be accomplished via a user display integrated with or coupled to the IPIM. | 02-12-2015 |
Matthew Gries, Houston, TX US
Patent application number | Description | Published |
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20100294192 | BUOYANCY SYSTEM FOR AN UNDERWATER DEVICE AND ASSOCIATED METHODS FOR OPERATING THE SAME - A buoyancy system includes a chamber having a volume associated therewith, and bladders within the volume of the chamber. Each bladder contains a clathrate mixture in a liquid state. The chamber includes an opening to allow surrounding water to circulate within the volume and contact the bladders. As the chamber is submerged in the surrounding water, the bladders expand based on the clathrate mixture changing from the liquid state to a solid state. This changes buoyancy by allowing less water to circulate within the volume of the chamber. | 11-25-2010 |
20120015567 | OCEAN THERMAL BUOYANCY AND PROPULSION SYSTEM - A water navigable vessel or glider can transport cargo across oceans and other bodies of water without the use of fossil or nuclear fuels. The vessel includes a housing, a cargo or payload area within the housing, one or more control fins attached to the housing, a ballast within the housing, an expandable and contractible container configured to receive a clathrate and maintain a minimum amount of pressure on the clathrate within the housing in proximity to the ballast, and an intake valve coupled to the ballast. The clathrate changes state, thereby changing the buoyancy of the glider, and causing the glider to move through the body of water. | 01-19-2012 |
Patrick J. Gries, Lakewood, IL US
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20140278392 | Method and Apparatus for Pre-Processing Audio Signals - The disclosure is directed to pre-processing audio signals. In one implementation, an electronic device receives an audio signal that has audio information, obtains auxiliary information (such as location, velocity, direction, light, proximity of objects, and temperature), and determines, based on the audio information and the auxiliary information, a type of audio environment in which the electronic device is operating. The device selects an audio pre-processing procedure based on the determined audio environment type and pre-processes the audio signal according to the selected pre-processing procedure. The device may then perform speech recognition on the pre-processed audio signal. | 09-18-2014 |
Regine Gries US
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20130014428 | METHODS OF MONITORING AND CONTROLLING THE WALNUT TWIG BEETLE, PITYOPHTHORUS JUGLANDIS - Disclosed are methods which include exposing a beetle of the species | 01-17-2013 |
Regine Gries, Coquitlam CA
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20090281190 | NOVEL ATTRACT AND KILL COMPOSITION FOR CONTROL OF PEST INSECTS - The invention relates to a composition and procedure to attract and kill insect pests. An insecticidal attract-and-kill composition comprising: an organic biodegradable matrix component from natural sources; an organic biodegradable ultraviolet light absorbent matrix component from natural sources; a biodegradable insecticidal or acaricidal compound; and a pheromonal or kairomonal attractant. | 11-12-2009 |
20100190865 | METHODS AND COMPOSITIONS FOR CONTROL OF GYPSY MOTHS, Lymanria dispar - The invention provides in part dialkoxybenzene and eugenol compounds for controlling infestation by a | 07-29-2010 |
20100297059 | METHODS AND COMPOSITIONS FOR CONTROL OF GYPSY MOTHS, LYMANRIA DISPAR - The invention provides in part dialkoxybenzene and eugenol compounds for controlling infestation by a | 11-25-2010 |
20110099886 | Controlling Bedbugs With Synthetic Pheromones And/Or Infrared Radiation - Disclosed are methods for attracting and thereby controlling bedbugs. One volatizes a synthetic pheromone and generates infrared radiation adjacent the location and exposes bedbugs thereto. The pheromone volatizer and/or radiation generator are | 05-05-2011 |
20130045178 | METHODS AND COMPOSITIONS FOR CONTROL OF GYPSY MOTH, Lymantria dispar - The invention provides in part dialkoxybenzene and eugenol compounds for controlling infestation by a | 02-21-2013 |
Regine M. Gries, Coquitlam CA
Patent application number | Description | Published |
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20090069407 | COMPOUNDS, COMPOSITIONS AND METHODS FOR REPELLING BLOOD-FEEDING ARTHROPODS AND DETERRING THEIR LANDING AND FEEDING - This invention relates to compositions of one or more compounds that incorporate one or more allyl sulfide, allyl disulfide or allyl polysulfide moieties, or one or more allyl sulfide, allyl disulfide or allyl polysulfide moieties and one or more hydroxyl groups, used in effective amount in formulations, including emulsions, to repel blood-feeding ectoparasitic arthropods, including mosquitoes, and to deter them from landing and feeding when applied to the skin, clothing or environment of animals, including humans. Said compounds can include, but are not limited to, 8-allyl-sulfanyloctan-1-ol. This invention also relates to compositions comprising one or more of said compounds in further combination with other arthropod repellent and deterrent compounds, including vanillin. These compounds may be formulated with inert ingredients to form a liquid, gel, paste, soap, spray, aerosol or powder. | 03-12-2009 |
20110251270 | COMPOUNDS AND METHODS FOR REPELLING BLOOD-FEEDING ARTHROPODS AND DETERRING THEIR LANDING AND FEEDING - This invention relates to a group of compounds for repelling blood-feeding ectoparasitic arthropods, and a method of deterring their landing and feeding on animals including humans, by applying in one or more formulations compounds that incorporate one or more sulfide and one or more hydroxyl groups to the skin, clothing or environment of animals, including humans. A method of repelling and deterring landing and feeding by blood-feeding arthropods on an animal by applying in effective amount one or more compounds that incorporate alkyl sulfide and alcohol moieties, or alkyl sulfide and amide moieties, or alkyl sulfide and amide moieties to the skin, clothing or environment of an animal. | 10-13-2011 |
20150128479 | METHODS AND APPARATUS FOR ATTRACTING RATS - An acoustic signal for attracting rats comprising a playback recording or synthetic generation of vocalizations of rats or mice is provided. The vocalizations may be of rat pups, and may be characterized by sonic frequency components in the range of 1.8-7.5 kHz and/or ultrasonic frequency components in the ranges of 21-24 kHz, 40-50 kHz and/or 60-96 kHz. The vocalizations may be of adult male rats, including courting adult male rats, characterized by sonic frequency components in the range of 15-20 kHz and/or ultrasonic frequency components in the range of 20-100 kHz. The vocalizations may be of adult female mice, including nursing adult female mice, characterized by sonic frequency components in the range of 8-12 kHz and/or ultrasonic frequency components in the range of 25-100 kHz. | 05-14-2015 |
Regine M. Gries US
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20160100575 | NEW COMPOSITIONS AND METHODS FOR ATTRACTING AND STIMULATING FEEDING BY MICE AND RATS - This invention describes novel food bait compositions that can be used alone or in combination with blends of attractive compounds to induce attraction and feeding by mice and rats. Said compositions and blends can be used to induce mice and rats to be captured in traps or to approach and remain in a location where they will be exposed to a rodenticide. | 04-14-2016 |
Robert Gries, Wooddtock, CT US
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20120017135 | Combined Single Error Correction/Device Kill Detection Code - In one embodiment, an apparatus includes a check/correct circuit coupled to a control circuit. The check/correct circuit is coupled to receive a block of data and corresponding check bits. The block of data is received as N transmissions, each transmission including M data bits and L check bits. The check/correct circuit is configured to detect one or more errors in each of a plurality of non-overlapping windows of K bits in the M data bits, responsive to the M data bits and the L check bits. The control circuit is configured to record which of the plurality of windows have had errors detected and, if a given window of the plurality of windows has had errors detected in each of the N transmissions of the block, the control circuit is configured to signal a device failure. Each of K, L, M, and N are integers greater than one. | 01-19-2012 |
Robert Gries, Woodstock, CT US
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20080307286 | Combined Single Error Correction/Device Kill Detection Code - In one embodiment, an apparatus comprises a check/correct circuit coupled to a control circuit. The check/correct circuit is coupled to receive a block of data and corresponding check bits. The block of data is received as N transmissions, each transmission comprising M data bits and L check bits. The check/correct circuit is configured to detect one or more errors in each of a plurality of non-overlapping windows of K bits in the M data bits, responsive to the M data bits and the L check bits. The control circuit is configured to record which of the plurality of windows have had errors detected and, if a given window of the plurality of windows has had errors detected in each of the N transmissions of the block, the control circuit is configured to signal a device failure. Each of K, L, M, and N are integers greater than one. | 12-11-2008 |
Sara Jane Gries, Plymouth, MN US
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20120271403 | TUBULAR STRUCTURE AND METHOD FOR MAKING THE SAME - A tubular structure and method for making a tubular structure are provided, where the tubular structure includes at least one layer of braided strands. In general, at least one portion of the braided strands exhibits a braid pattern of crests and troughs (e.g., a wave pattern, which may include sinusoidal, square, and/or sawtooth waves) along a length of the tubular structure. The wave pattern can be created by rotating the mandrel onto which the tubular structure is braided during the braiding process, such as by angularly oscillating the mandrel about its longitudinal axis or about its transverse axis. As a result, the tubular structures may have increased radial strength, collapse resistance, torque transmission, column strength, and kink resistance. The tubular structures may be used in medical devices, such as stent-grafts, as well as in other medical and non-medical devices, such as in hoses, tubing, filters, and other devices. | 10-25-2012 |
20130304232 | TUBULAR STRUCTURE AND METHOD FOR MAKING THE SAME - A tubular structure and method for making a tubular structure are provided, where the tubular structure includes at least one layer of braided strands. In general, at least one portion of the braided strands exhibits a braid pattern of crests and troughs (e.g., a wave pattern, which may include sinusoidal, square, and/or sawtooth waves) along a length of the tubular structure. The wave pattern can be created by rotating the mandrel onto which the tubular structure is braided during the braiding process, such as by angularly oscillating the mandrel about its longitudinal axis or about its transverse axis. As a result, the tubular structures may have increased radial strength, collapse resistance, torque transmission, column strength, and kink resistance. The tubular structures may be used in medical devices, such as stent-grafts, as well as in other medical and non-medical devices, such as in hoses, tubing, filters, and other devices. | 11-14-2013 |
20140249567 | EMBOLIC PROTECTION DEVICE - Embolic protection devices and systems capture and/or deflect emboli from entering one or more arterial branches of the aorta. An embolic protection device may include an anchor section that is positionable within an arterial branch of the aorta and a shield section that is operatively coupled to the anchor section. The shield section is positionable relative to one or more ostia of the aortic branches and is held in that position by the anchor section. | 09-04-2014 |
Sara Jane Gries, Osseo, MN US
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20150250590 | TRANSAPICAL MITRAL CHORDAE REPLACEMENT - A chordae replacement device includes a first anchor for coupling to a native valve leaflet, a second anchor for coupling to heart tissue and a filament adapted for connection between the first anchor and the second anchor so as to limit the movement of the native valve leaflet away from the second anchor. | 09-10-2015 |
Thomas A. Gries, Solon, OH US
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20090039619 | TOW HITCH - A tow hitch comprises an elongated tubular shank of rectangular cross-section having four side walls; and at least one tow ball mounted to an adjacent side wall of the shank with a mounting shank extending from a base of the tow ball through a first hole in the adjacent side wall and a second hole in a side wall opposite the adjacent side wall. | 02-12-2009 |
20110181022 | TOW HITCH - A tow hitch comprises an elongated tubular shank of rectangular cross-section having four side walls; and at least one tow ball mounted to an adjacent side wall of the shank with a mounting shank extending from a base of the tow ball through a first hole in the adjacent side wall and a second hole in a side wall opposite the adjacent side wall. | 07-28-2011 |
Ulysses E. Gries, Milwaukee, WI US
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20100230979 | Doorway Having a Recessed Magnetic Lock - A doorway having a recessed magnetic lock is disclosed. The doorway that comprises a jamb that defines an interior jamb space. The jamb includes a stop surface that defines a jamb opening between the interior jamb space and an exterior space. The doorway further comprises an electromagnet housed within the interior jamb space that is operable to provide an attractive magnetic force. The doorway further comprises a door pivotally connected to the jamb to open and close the doorway. The door defines an interior door space and includes a front surface. The front surface defines a door opening between the interior door space and the exterior space. The doorway further comprise a magnetically attractive armature housed within the interior door space. The armature is abuttingly engagable with the electromagnet when the doorway is closed. | 09-16-2010 |