Patents by Inventor David Christenson
David Christenson 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).
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Patent number: 12172444Abstract: An apparatus and method for depositing an aerosol that has an ultrafast pneumatic, shutter. The flow of aerosol through the entire deposition flow path is surrounded by at least one sheath gas, thereby greatly increasing reliability. The distance between the aerosol switching chamber and a reverse gas flow chamber input is minimized to reduce switching time. The distance from the switching chamber to the nozzle exit is also minimized to reduce switching time. The gas flows in the system are configured to maintain a substantially constant pressure in the system, and consequently substantially constant flow rates through the deposition nozzle and exhaust nozzle, to minimize on/off switching times. This enables the system to have a switching time of less than 10 ms.Type: GrantFiled: April 29, 2022Date of Patent: December 24, 2024Assignee: Optomec, Inc.Inventors: John S. Wright, Chad Michael Conroy, Kurt K. Christenson, John David Hamre
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Publication number: 20240358531Abstract: Technology is described which can provide a quick disconnect and overload protection mechanism for a prosthetic limb that is used with an osseointegrated percutaneous post. The technology can provide a way to easily don and doff a prosthetic limb. This quick disconnect may also provide a resettable torsional overload protection mechanism and/or a fusible link that may act to protect the osseointegrated percutaneous post from both axial and bending over-loads.Type: ApplicationFiled: July 8, 2024Publication date: October 31, 2024Applicant: Motion Control, Inc.Inventors: Jeffery David Christenson, Edwin Kay Iversen, Kent Nelson Bachus, Heath Byron Henninger, Alex Drew
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Patent number: 12029664Abstract: Technology is described which can provide a quick disconnect and overload protection mechanism for a prosthetic limb that is used with an osseointegrated percutaneous post. The technology can provide a way to easily don and doff a prosthetic limb. This quick disconnect may also provide a resettable torsional overload protection mechanism and/or a fusible link that may act to protect the osseointegrated percutaneous post from both axial and bending over-loads.Type: GrantFiled: May 9, 2022Date of Patent: July 9, 2024Assignee: Motion Control, Inc.Inventors: Jeffery David Christenson, Edwin Kay Iversen, Kent Nelson Bachus, Heath Byron Henninger, Alex Drew
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Publication number: 20230126674Abstract: Technology is described to provide a foot and ankle prosthesis for individuals with lower limb loss. This technology is able to store and release energy and individuals or patients who are using the foot/ankle prosthesis may be able to expend less energy when walking. The system includes a hydraulic damper attached to dynamic energy storing spring elements. The axis of rotation of the system can be near to that of an intact human ankle, providing biomimetic function. The system can utilize spring elements based on the vertical displacement of the center of pressure of an intact normal foot. A hydraulic system can provide user adjustable heel height and adaptation to inclines. The dorsiflexion and plantar flexion resistances can be independently adjusted manually or electrically. In addition, the system can be automatically locked in dorsiflexion when loaded and unlock when unloaded.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Inventors: Andrew Howard Hansen, Edwin Kay Iversen, Eric Alexander Nickel, Gregory O. Voss, Gregory James Jacobs, Carter J. Greene, Jeffery David Christenson
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Publication number: 20230125274Abstract: Technology is described to provide a foot/ankle prosthesis for individuals with transfemoral limb loss. This technology is able to store and release energy and thus individuals or patients who are using the foot/ankle prosthesis are able to expend less energy when walking or running. The device or system can include a prosthetic foot/ankle system with a linear or rotary hydraulic damper such that the hydraulic damper is attached to dynamic energy storing spring elements. The axis of rotation of the system can be near to that of an intact human ankle. The system can utilize spring elements based on the vertical displacement of the center of pressure of an intact normal foot. The system can also provide user adjustable heel height.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Inventors: Edwin Kay Iversen, Gregory James Jacobs, Jeffery David Christenson, Carter J. Greene
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Publication number: 20230131100Abstract: Technology is described to provide a locking device to control movement of a prosthetic limb. The technology may include a hydraulic damper having a movable damper wall in a hydraulic housing of the hydraulic damper, and the movable damper wall may form a first chamber and second chamber in the hydraulic damper. A first fluid channel may be coupled to the first chamber. In addition, a latch may be in fluid communication with the first fluid channel. A poppet valve can be configured to set the latch in an open position when pressure is reduced in the first chamber and to stop fluid movement when pressure is increased in the first chamber. A second fluid channel between the second chamber and the latch may enable fluid to flow between the second chamber and the latch.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Inventors: Gregory James Jacobs, Edwin Kay Iversen, Carter J. Greene, Jeffery David Christenson
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Patent number: 11520847Abstract: A mechanism is provided in a data processing system to implement a medical concept searching engine for improving searches of medical concepts based on an index model. The mechanism generates a concept index model data structure that records medical concepts and corresponding numbers of instances of the medical concepts in the corpus of documents. Responsive to receiving a search request from a user, the medical concept searching engine identifies at least one medical concept in the search request and one or more related medical concepts that are related to the at least one medical concept based on an ontology data structure. The medical concept searching engine generates a bubble graph user interface comprising a plurality of bubbles corresponding to the at least one medical concept and the one or more related medical concepts.Type: GrantFiled: January 8, 2020Date of Patent: December 6, 2022Assignee: International Business Machines CorporationInventors: Daniel Weber, David A. Christenson, Nathaniel E. Rykal
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Publication number: 20220354671Abstract: Technology is described which can provide a quick disconnect and overload protection mechanism for a prosthetic limb that is used with an osseointegrated percutaneous post. The technology can provide a way to easily don and doff a prosthetic limb. This quick disconnect may also provide a resettable torsional overload protection mechanism and/or a fusible link that may act to protect the osseointegrated percutaneous post from both axial and bending over-loads.Type: ApplicationFiled: May 9, 2022Publication date: November 10, 2022Inventors: Jeffery David Christenson, Edwin Kay Iversen, Kent Nelson Bachus, Heath Byron Henninger, Alex Drew
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Patent number: 11246722Abstract: Technology is described for easy and safe attachment of a prosthetic limb to a percutaneous post that has been osseointegrated into the remnant limb of an individual with limb loss. A quick-disconnect device for a prosthetic limb can comprise a percutaneous post support assembly comprising a post locking assembly attached to a percutaneous post. A roller support can be coupled to the percutaneous post support assembly and can support torsional breakaway rollers. A release housing assembly can be coupled to the percutaneous post support assembly, and can comprise a limb support housing supporting a limb attachment structure to support a prosthetic limb. The release housing assembly comprises a torsional breakaway spring. The plurality of torsional breakaway rollers are each biased to the torsional breakaway spring to generate a spring force to restrict or limit rotation of the percutaneous post support assembly. Other breakaway springs and rollers are provided for bending release and axial release.Type: GrantFiled: December 12, 2018Date of Patent: February 15, 2022Assignee: Motion Control, Inc.Inventors: Jeffery David Christenson, Edwin Kay Iversen, Kent Nelson Bachus, Heath Byron Henninger, Alex Drew
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Patent number: 11080335Abstract: An automated concept-based autosuggest mechanism is provided for automatically tailoring autosuggestions in a search engine to particular medical concepts being searched. The mechanism identifies a concept-based text pattern dictionary data structure associated with text being dynamically entered by a user based on a previously identified item. The mechanism dynamically matches a set of text patterns in the concept-based text pattern dictionary data structure with a portion of text being dynamically entered by the user into a field of the user interface. The mechanism generates a user selectable output in the user interface specifying the matching set of text patterns from the concept-based text pattern dictionary data structure. The mechanism automatically populates the field of the user interface with a selected text pattern from the set of matching text patterns in response to user selection of the selectable text patter in the user selectable output in the user interface.Type: GrantFiled: August 13, 2019Date of Patent: August 3, 2021Assignee: International Business Machines CorporationInventors: Daniel Weber, Nathaniel E. Rykal, David A. Christenson, William C. Rapp
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Publication number: 20210209186Abstract: A mechanism is provided in a data processing system to implement a medical concept searching engine for improving searches of medical concepts based on an index model. The mechanism generates a concept index model data structure that records medical concepts and corresponding numbers of instances of the medical concepts in the corpus of documents. Responsive to receiving a search request from a user, the medical concept searching engine identifies at least one medical concept in the search request and one or more related medical concepts that are related to the at least one medical concept based on an ontology data structure. The medical concept searching engine generates a bubble graph user interface comprising a plurality of bubbles corresponding to the at least one medical concept and the one or more related medical concepts.Type: ApplicationFiled: January 8, 2020Publication date: July 8, 2021Inventors: Daniel Weber, David A. Christenson, Nathaniel E. Rykal
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Patent number: 10984896Abstract: Systems and methods for providing targeted content to a patient who has received a prescription for medication. The systems and methods generally provide the content prior to the Point of Sale (POS) of the actual prescription allow patients to review the content and possibly act on it prior to actually obtaining the medication. Depending on embodiment, the content may be provided by a pharmacy at or around the time of dispensing or by a physician at or around the time of prescribing.Type: GrantFiled: June 4, 2014Date of Patent: April 20, 2021Assignee: LDM Group, LLCInventors: James Grady, David Christenson, Robert Uecker
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Publication number: 20210049212Abstract: An automated concept-based autosuggest mechanism is provided for automatically tailoring autosuggestions in a search engine to particular medical concepts being searched. The mechanism identifies a concept-based text pattern dictionary data structure associated with text being dynamically entered by a user based on a previously identified item. The mechanism dynamically matches a set of text patterns in the concept-based text pattern dictionary data structure with a portion of text being dynamically entered by the user into a field of the user interface. The mechanism generates a user selectable output in the user interface specifying the matching set of text patterns from the concept-based text pattern dictionary data structure. The mechanism automatically populates the field of the user interface with a selected text pattern from the set of matching text patterns in response to user selection of the selectable text patter in the user selectable output in the user interface.Type: ApplicationFiled: August 13, 2019Publication date: February 18, 2021Inventors: Daniel Weber, Nathaniel E. Rykal, David A. Christenson, William C. Rapp
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Publication number: 20190272909Abstract: Systems and methods for providing targeted content to a patient who has received a prescription for medication. The systems and methods generally provide the content prior to the Point of Sale (POS) of the actual prescription to allow patients to review the content and possibly act on it prior to actually obtaining the medication. Depending on embodiment, the content may be provided by a pharmacy at or around the time of dispensing or by a physician at or around the time of prescribing.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Inventors: James Grady, David Christenson, Robert Uecker
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Publication number: 20190175370Abstract: Technology is described for easy and safe attachment of a prosthetic limb to a percutaneous post that has been osseointegrated into the remnant limb of an individual with limb loss. A quick-disconnect device for a prosthetic limb can comprise a percutaneous post support assembly comprising a post locking assembly attached to a percutaneous post. A roller support can be coupled to the percutaneous post support assembly and can support torsional breakaway rollers. A release housing assembly can be coupled to the percutaneous post support assembly, and can comprise a limb support housing supporting a limb attachment structure to support a prosthetic limb. The release housing assembly comprises a torsional breakaway spring. The plurality of torsional breakaway rollers are each biased to the torsional breakaway spring to generate a spring force to restrict or limit rotation of the percutaneous post support assembly. Other breakaway springs and rollers are provided for bending release and axial release.Type: ApplicationFiled: December 12, 2018Publication date: June 13, 2019Inventors: Jeffry David Christenson, Edwin Kay Iversen, Kent Nelson Bachus, Heath Byron Henninger
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Patent number: 10311210Abstract: Systems and methods for providing targeted content to a patient who has received a prescription for medication. The systems and methods generally provide the content prior to the Point of Sale (POS) of the actual prescription to allow patients to review the content and possibly act on it prior to actually obtaining the medication. Depending on embodiment, the content may be provided by a pharmacy at or around the time of dispensing or by a physician at or around the time of prescribing.Type: GrantFiled: June 4, 2014Date of Patent: June 4, 2019Assignee: LDM Group, LLCInventors: James Grady, David Christenson, Robert Uecker
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Patent number: 10004611Abstract: A prosthetic hand system may include a plurality of prosthetic fingers and a prosthetic thumb. The prosthetic hand system may include a thumb drive mechanism that may be used to actuate the prosthetic thumb. In some examples, the thumb drive mechanism may be configured to enable the prosthetic thumb to perform a pinching or grasping motion and a release motion. The prosthetic hand system may also include a backlock that enables the prosthetic thumb to maintain pinching or gripping pressure after a motor has been disengaged. The prosthetic hand system may also include a gear lock that may be configured to lock a finger joint. The prosthetic hand system may also include an adaptive gripping joint that may be located on each prosthetic finger. In some examples, the adaptive gripping joint may be configured to passively adapt the plurality of prosthetic fingers to one or more differently shaped objects.Type: GrantFiled: April 21, 2016Date of Patent: June 26, 2018Assignee: Motion ControlInventors: Edwin Kay Iversen, Joseph Anthony Jacobs, Jeffry David Christenson, Peter Karl Strazdins, Steven Reese Kunz, Brent Taylor Jarvis, Jeff Robert Welch, Harold Hume Sears, Arthur David Dyck
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Patent number: 10004612Abstract: A prosthetic hand system may include a plurality of prosthetic fingers and a prosthetic thumb. The prosthetic hand system may include a thumb drive mechanism that may be used to actuate the prosthetic thumb. In some examples, the thumb drive mechanism may be configured to enable the prosthetic thumb to perform a pinching or grasping motion and a release motion. The prosthetic hand system may also include a backlock that enables the prosthetic thumb to maintain pinching or gripping pressure after a motor has been disengaged. The prosthetic hand system may also include a gear lock that may be configured to lock a finger joint. The prosthetic hand system may also include an adaptive gripping joint that may be located on each prosthetic finger. In some examples, the adaptive gripping joint may be configured to passively adapt the plurality of prosthetic fingers to one or more differently shaped objects.Type: GrantFiled: April 21, 2016Date of Patent: June 26, 2018Assignee: Motion ControlInventors: Edwin Kay Iversen, Joseph Anthony Jacobs, Jeffry David Christenson, Peter Karl Strazdins, Steven Reese Kunz, Brent Taylor Jarvis, Jeff Robert Welch, Harold Hume Sears, Arthur David Dyck
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Patent number: 9948600Abstract: Techniques are described for load balancing between DHCP servers at a DHCP client. Embodiments include receiving, at the DHCP client, a respective DHCPOFFER message from each of two or more DHCP servers, wherein each of the DHCPOFFER messages includes an IP address offer and load information describing a current workload of the respective DHCP server. One of DHCP servers is selected, at the DHCP client, to accept an offer for an IP address from, based on the received load information and a subnet on which the selected DHCP server is located. Embodiments transmit a DHCPREQUEST message, from the DHCP client, to the selected DHCP server, to accept the IP address offer from the selected DHCP server.Type: GrantFiled: December 16, 2015Date of Patent: April 17, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David A. Christenson, James Venuto
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Patent number: 9774487Abstract: Techniques are described for detecting duplicate IP addresses at a DHCP relay agent. Embodiments identify a list of DHCP clients that have valid IP address leases from one or more DHCP servers. Additionally, network traffic from a first node passing through the DHCP relay agent is monitored. Embodiments then determine whether the first node is using a duplicate IP address, based on the monitored network traffic and the identified list of DHCP clients.Type: GrantFiled: December 10, 2012Date of Patent: September 26, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David A. Christenson, James Venuto