Patents by Inventor David Sandahl
David Sandahl 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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Publication number: 20240139567Abstract: A fire suppression nozzle includes a first support plate, a conduit including an inlet and an outlet, and a baffle made of a porous material extending from the first support plate and at least partially surrounding the outlet to form an interior in fluid communication with the outlet and an end opening. The conduit is configured to receive an inert gas at the inlet and provide the inert gas to the interior of the baffle via the outlet such that the inert gas exits the outlet and passes at least partially through the baffle. The nozzle includes a sound absorbing member extending across the end opening to at least partially enclose the interior, and also includes a sound absorbing insert composed of a sound absorbing material and a second support plate arranged against an outer face of the sound absorbing insert and coupled to the first support plate.Type: ApplicationFiled: December 14, 2023Publication date: May 2, 2024Applicant: Tyco Fire Products LPInventors: Arash Agan, Melissa Ann Figueiredo Loureiro, Michael David Mulzer, Derek M. Sandahl
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Publication number: 20240041621Abstract: Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.Type: ApplicationFiled: August 22, 2023Publication date: February 8, 2024Inventors: Aron Kristbjorn Albertsson, Maria Gudrun Sveinbjornsdottir, Rowan Patrick Robinson Cain, Jeroen Nijman, David Sandahl, Larus Gunnsteinsson
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Publication number: 20240000595Abstract: A polycentric hinge for an orthopedic device includes first and second hinge arms, and two cover plates, rather than numerous individual parts and fasteners. The first and second cover plates define a plurality of bearings and a plurality of recesses for receiving the bearings, whereby the hinge arms are mounted about the bearings and are pivotable relative to one another while encased by the first and second cover plates. Additional bearing surfaces are provided for securing snap-fitted rotation stops without a tool or fasteners. The components of the hinge are formed from injection molded materials such as plastics.Type: ApplicationFiled: June 28, 2023Publication date: January 4, 2024Inventors: Halldor ALBERTSSON, David SANDAHL, Valgeir PETURSSON
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Patent number: 11771572Abstract: Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.Type: GrantFiled: September 28, 2020Date of Patent: October 3, 2023Assignee: Össur Iceland ehfInventors: Aron Kristbjorn Albertsson, Maria Gudrun Sveinbjornsdottir, Rowan Patrick Robinson Cain, Jeroen Nijman, David Sandahl, Larus Gunnsteinsson
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Patent number: 11696842Abstract: A vacuum assisted suspension system includes a prosthetic foot and a pump mechanism connected to the foot and fluidly couplable to a prosthetic socket. The pump mechanism includes an elongate pivoting member rotatable relative to the prosthetic foot about a joint and including a distal recess. A piston is connected to the foot and is movably received in the recess. A fluid chamber is defined between the piston and the interior of the recess. When no weight is placed on the foot a volume of the fluid chamber is zero or near-zero and when weight of a user is placed on the prosthetic foot the pivoting member rotates away from the piston and expands the volume of the fluid chamber to draw fluid into the fluid chamber from the prosthetic socket.Type: GrantFiled: April 13, 2020Date of Patent: July 11, 2023Assignee: OSSUR HFInventors: Grimur Jonsson, Bjarni Gunnarsson, Olafur Freyr Halldorsson, David Sandahl
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Publication number: 20230087706Abstract: A prosthetic system includes a prosthetic foot defining an upper surface and having a flexible configuration and a pump system attached to the prosthetic foot. The pump system includes a pump mechanism defining a fluid chamber having variable configuration and an actuating part. The actuating part is arranged to selectively engage with and separate a distance from the upper surface of the foot plate to move the pump mechanism between a first position in which a volume of the fluid chamber is zero or near-zero and a second position in which the volume of the fluid chamber is expanded relative to the first position. The volume of the fluid chamber increases when the actuating part moves away from the upper surface of the foot plate.Type: ApplicationFiled: November 23, 2022Publication date: March 23, 2023Inventors: Olafur Freyr HALLDORSSON, David SANDAHL, Bjarni GUNNARSSON, Egill Sveinbjorn EGILSSON
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Publication number: 20230064710Abstract: A prosthetic foot can include an attachment member, at least one first brace, at least one first flexible member, an unpowered actuator, at least one second brace, and at least one second flexible member. The attachment member can include a connector configured to connect the attachment member to a user or another prosthetic device. The at least one first brace can mount to the attachment member and the at least one first flexible member can connect to the attachment member by the at least one first brace such that a force between the ground and the attachment member can be supported by the at least one first flexible member. The unpowered actuator can mount to the attachment member and the at least one second brace can mounted to the actuator. The at least one second flexible member can connect to the attachment member by the at least one second brace such that a force between the ground and the attachment member can be supported by the at least one second flexible member.Type: ApplicationFiled: August 11, 2022Publication date: March 2, 2023Inventors: Arinbjorn Viggo Clausen, Bjarni Andresson, Ragnar Orn Gunnarsson, Christophe Guy Lecomte, Maria Gudrun Sveinbjornsdottir, David Sandahl, Atli Orn Sverrisson, David Langlois
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Publication number: 20220304833Abstract: A prosthetic system includes first and second parts rotatable relative to one another about a joint. The first and second parts are adapted to form at least part of a weight bearing connection between a prosthetic foot and a socket. A pump system includes a pump mechanism operatively connected to the first and second parts. Rotation of the first part and/or the second part about the joint moves the pump mechanism between an original configuration in which the volume of a fluid chamber defined by the pump mechanism is zero or near-zero, and an expanded configuration in which the volume of the fluid chamber is increased.Type: ApplicationFiled: June 15, 2022Publication date: September 29, 2022Inventors: David SANDAHL, Dana Stewart MARLIN, Hafsteinn JONASSON
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Patent number: 11446166Abstract: A prosthetic foot can include an attachment member, at least one first brace, at least one first flexible member, an unpowered actuator, at least one second brace, and at least one second flexible member. The attachment member can include a connector configured to connect the attachment member to a user or another prosthetic device. The at least one first brace can mount to the attachment member and the at least one first flexible member can connect to the attachment member by the at least one first brace such that a force between the ground and the attachment member can be supported by the at least one first flexible member. The unpowered actuator can mount to the attachment member and the at least one second brace can mounted to the actuator. The at least one second flexible member can connect to the attachment member by the at least one second brace such that a force between the ground and the attachment member can be supported by the at least one second flexible member.Type: GrantFiled: July 9, 2019Date of Patent: September 20, 2022Assignee: Össur Iceland ehfInventors: Arinbjorn Viggo Clausen, Bjarni Andresson, Ragnar Orn Gunnarsson, Christophe Guy Lecomte, Maria Gudrun Sveinbjornsdottir, David Sandahl, Atli Orn Sverrisson, David Langlois
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Publication number: 20220273467Abstract: A prosthetic system includes a prosthetic foot having an upper foot element with a concave-forward facing portion and foot portion extending forwardly therefrom. An intermediate foot element is disposed below the upper foot element and has a front portion coupled to the foot portion of the upper foot element. A lower foot element is disposed below the intermediate foot element. A pump system is coupled to the prosthetic foot and comprises a pump mechanism including a housing defining a cavity, and a membrane situated in the cavity. The pump mechanism is movable between an original configuration and an expanded configuration. An arm member is connected to the pump mechanism and operatively coupled to the intermediate foot element. The arm member is arranged to move the pump mechanism toward at least the expanded configuration upon movement of the intermediate foot element relative to the upper foot element.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Inventors: Hafsteinn JONASSON, Dadi GRANZ, Marco STEINBERG, David SANDAHL
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Patent number: 11413167Abstract: A prosthetic joint can include a first attachment member and a second attachment member coupled to the first attachment member. The second attachment member can include a cylindrical chamber. The prosthetic joint can include a fixation system disposed within the cylindrical chamber comprising at least one cam. The prosthetic joint can have an unlocked configuration, wherein in the unlocked configuration the first attachment member and the second attachment member can rotate relative to each other. The prosthetic joint can have a locked configuration, wherein in the locked configuration the first attachment member is substantially prevented from rotating relative to the second attachment member.Type: GrantFiled: July 30, 2019Date of Patent: August 16, 2022Assignee: Össur Iceland EhfInventors: Dana Stewart Marlin, David Sandahl
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Publication number: 20220212333Abstract: An adapter is arranged to secure to a rotary device. The adapter includes a handle rotatable about an axis, and a coupler extending from and coaxial with the handle. The coupler is adapted to engage the rotary device via traction elements for simultaneously rotating the rotary device and the handle.Type: ApplicationFiled: March 24, 2022Publication date: July 7, 2022Inventors: Valgeir PETURSSON, Stefan Orn STEFANSSON, David SANDAHL
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Patent number: 11376139Abstract: A prosthetic system includes first and second parts rotatable relative to one another about a joint. The first and second parts are adapted to form at least part of a weight bearing connection between a prosthetic foot and a socket. A pump system includes a pump mechanism operatively connected to the first and second parts. Rotation of the first part and/or the second part about the joint moves the pump mechanism between an original configuration in which the volume of a fluid chamber defined by the pump mechanism is zero or near-zero, and an expanded configuration in which the volume of the fluid chamber is increased.Type: GrantFiled: November 18, 2019Date of Patent: July 5, 2022Assignee: OSSUR ICELAND EHFInventors: David Sandahl, Dana Stewart Marlin, Hafsteinn Jonasson
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Publication number: 20220192912Abstract: An exoskeleton system includes a body interface and connects to a power supply. The body interface and the power supply include a quick lock connection mechanism arranged to adjust to the height and width of a user. The body interface includes a connection frame that defines at least two anchoring slots at different heights for connecting to corresponding anchors extending from the power supply. The power supply includes a removable locking element for securing the anchors to the anchoring slots at a selected height position. The power supply may have transmission arms driven by a drive system, and an assistive system for connection to a user. The transmission arms may be slidably connected to the drive system and have a locking part to secure the power supply in a plurality of predetermined width positions.Type: ApplicationFiled: April 23, 2020Publication date: June 23, 2022Inventors: Kristin Asa THORISDOTTIR, David SANDAHL
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Patent number: 11357647Abstract: A prosthetic system includes a prosthetic foot having an upper foot element with a concave-forward facing portion and foot portion extending forwardly therefrom. An intermediate foot element is disposed below the upper foot element and has a front portion coupled to the foot portion of the upper foot element. A lower foot element is disposed below the intermediate foot element. A pump system is coupled to the prosthetic foot and comprises a pump mechanism including a housing defining a cavity, and a membrane situated in the cavity. The pump mechanism is movable between an original configuration and an expanded configuration. An arm member is connected to the pump mechanism and operatively coupled to the intermediate foot element. The arm member is arranged to move the pump mechanism toward at least the expanded configuration upon movement of the intermediate foot element relative to the upper foot element.Type: GrantFiled: August 19, 2019Date of Patent: June 14, 2022Assignee: OSSUR ICELAND EHFInventors: Hafsteinn Jonasson, Dadi Granz, Marco Steinberg, David Sandahl
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Patent number: 11311997Abstract: An adapter is arranged to secure to a rotary device. The adapter includes a handle rotatable about an axis, and a coupler extending from and coaxial with the handle. The coupler is adapted to engage the rotary device via traction elements for simultaneously rotating the rotary device and the handle.Type: GrantFiled: March 6, 2020Date of Patent: April 26, 2022Assignee: OSSUR ICELAND EHFInventors: Valgeir Petursson, Stefan Orn Stefansson, David Sandahl
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Patent number: 11141294Abstract: A prosthetic system includes a prosthetic foot defining an upper surface and having a flexible configuration and a pump system attached to the prosthetic foot. The pump system includes a pump mechanism defining a fluid chamber having variable configuration and an actuating part. The actuating part is arranged to selectively engage with and separate a distance from the upper surface of the foot plate to move the pump mechanism between a first position in which a volume of the fluid chamber is zero or near-zero and a second position in which the volume of the fluid chamber is expanded relative to the first position. The volume of the fluid chamber increases when the actuating part moves away from the upper surface of the foot plate.Type: GrantFiled: September 17, 2018Date of Patent: October 12, 2021Assignee: OSSUR HFInventors: Olafur Freyr Halldorsson, David Sandahl, Bjarni Gunnarsson, Egill Sveinbjorn Egilsson
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Patent number: 11058561Abstract: A prosthetic system includes a prosthetic valve having a valve body with a shaft defining a flow channel fluidly connectable to an interior of a socket. One or more ports in the valve body are in fluid communication with the flow channel and a membrane is positioned in the valve body. A release button associated with the membrane controls allow air flow into the socket via the one or more ports while air can flow out of the socket via the one or more ports independent of operation of the release button. A one-way valve is connected to the valve assembly that selectively permit air flow out of the socket. A valve insert is mountable on the socket and arranged to couple the valve body to the socket. The valve insert defines an opening configured to allow the shaft to extend through the valve insert and into the socket.Type: GrantFiled: April 10, 2018Date of Patent: July 13, 2021Assignee: OSSUR HFInventors: Olafur Freyr Halldorsson, David Sandahl, Bjarni Gunnarsson, Egill Sveinbjorn Egilsson
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Publication number: 20210077281Abstract: Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.Type: ApplicationFiled: September 28, 2020Publication date: March 18, 2021Inventors: Aron Kristbjorn Albertsson, Maria Gudrun Sveinbjornsdottir, Rowan Patrick Robinson Cain, Jeroen Nijman, David Sandahl, Larus Gunnsteinsson
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Patent number: 10821007Abstract: Prosthetic feet that allow for heel height adjustment and/or provide metatarsal joint functionality to more closely mimic natural human feet are provided. A prosthetic foot can include an ankle module having a locking mechanism configured to lock the heel at a particular height. The prosthetic foot can also include a toe region that adapts to varying heel heights. The ankle module and/or locking mechanism can be adjusted, controlled, and/or locked via a hydraulic mechanism. The toe region can curve upward relative to a portion of the foot proximal of the toe region.Type: GrantFiled: December 1, 2017Date of Patent: November 3, 2020Assignee: Össur Iceland ehfInventors: Aron Kristbjorn Albertsson, Maria Gudrun Sveinbjornsdottir, Rowan Patrick Robinson Cain, Jeroen Nijman, David Sandahl, Larus Gunnsteinsson