Patents by Inventor Zachary D. Krapfl
Zachary D. Krapfl 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: 8062187Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. Some embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion. Other aspects of the present invention relate to a releasable connection mechanism that can be used to selectively and/or automatically limit or eliminate the variable stride feature of an exercise device.Type: GrantFiled: June 15, 2010Date of Patent: November 22, 2011Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Keith M. Weier, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Patent number: 7922635Abstract: An exercise unit that is a bench-based, has an easily adjustable load exercise system using a resistance engine that can provide a constant load level through the entire range of motion to approximate the use of free-weights, is portable, and reconfigures easily to several different shapes for different exercises. The exercise unit is compact, has a minimal vertical height, and weighs much less than the maximum resistance load that it can create. The bench unit can be stood on its end for compact storage.Type: GrantFiled: March 8, 2001Date of Patent: April 12, 2011Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, William A. Baker, Patrick A. Warner, Michael H. Harding, Richard W. Trevino
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Publication number: 20100285928Abstract: The variable stride exercise device utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary the user's stride path during exercise. The exercise device allows for a foot engagement member travel path that adapts to the change in stride length rather than forcing the user into a fixed size path. A user's exertion level may have several components impacting the stride length provided by the machine, such as leg power, torso power, and (in versions of the exercise apparatus with arm supports or exercise components) arm power. The exercise device may include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion.Type: ApplicationFiled: July 19, 2010Publication date: November 11, 2010Applicant: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Publication number: 20100255958Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. Some embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion. Other aspects of the present invention relate to a releasable connection mechanism that can be used to selectively and/or automatically limit or eliminate the variable stride feature of an exercise device.Type: ApplicationFiled: June 15, 2010Publication date: October 7, 2010Applicant: Nautilus, Inc.Inventors: Andrew P. Lull, Keith M. Weier, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Patent number: 7785235Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. A user's exertion level may have several components impacting the stride length provided by the machine, such as leg power, torso power, and (in embodiments with arm supports or exercise components) arm power. Other embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion.Type: GrantFiled: March 21, 2005Date of Patent: August 31, 2010Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Patent number: 7758473Abstract: The variable stride exercise device utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary the user's stride path during exercise. The exercise device allows for a foot engagement member travel path that adapts to the change in stride length rather than forcing the user into a fixed size path. A user's exertion level may have several components impacting the stride length provided by the machine, such as leg power, torso power, and (in versions of the exercise apparatus with arm supports or exercise components) arm power. The exercise device may include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion.Type: GrantFiled: August 20, 2008Date of Patent: July 20, 2010Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Patent number: 7736278Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. Some embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion. Other aspects of the present invention relate to a releasable connection mechanism that can be used to selectively and/or automatically limit or eliminate the variable stride feature of an exercise device.Type: GrantFiled: June 21, 2005Date of Patent: June 15, 2010Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Keith M. Weier, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Publication number: 20080312045Abstract: The variable stride exercise device utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary the user's stride path during exercise. The exercise device allows for a foot engagement member travel path that adapts to the change in stride length rather than forcing the user into a fixed size path. A user's exertion level may have several components impacting the stride length provided by the machine, such as leg power, torso power, and (in versions of the exercise apparatus with arm supports or exercise components) arm power. The exercise device may include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion.Type: ApplicationFiled: August 20, 2008Publication date: December 18, 2008Applicant: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Patent number: 7462134Abstract: The present invention provides for a variable stride exercise device having a variable size close curved striding path during use. The exercise device described and depicted herein utilizes various configurations of linkage assemblies, cam members, and other components, connected with a frame to allow a user to dynamically vary his stride path during exercise. An exercise device conforming to aspects of the present invention provides a foot path that adapts to the change in stride length rather than forcing the user into a fixed size path. A user's exertion level may have several components impacting the stride length provided by the machine, such as leg power, torso power, and (in embodiments with arm supports or exercise components) arm power. Other embodiments of the exercise device include a lockout device that selectively eliminates the variable stride features of the exercise device and allows the user to exercise in a stepping motion.Type: GrantFiled: June 22, 2004Date of Patent: December 9, 2008Assignee: Nautilus, Inc.Inventors: Andrew P. Lull, Zachary D. Krapfl, Chester F. Kowalewski, Jonathan B. Watt
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Publication number: 20030171191Abstract: The invention involves a base handle bar configuration having a stem and a base gripping portion connected with the stem. A variety of combinations of stub grips, spanning bars, arcuate bars, cross bars, prong grips, and the like are connected with the base gripping portion. The handle bar may be connected with any type of exercise device and is particularly suited for connection with an exercise bicycle. The various handlebar configurations provide a user with numerous gripping alternatives during use of the exercise device.Type: ApplicationFiled: March 5, 2003Publication date: September 11, 2003Applicant: Nautilus, Inc.Inventors: Douglas A. Crawford, Zachary D. Krapfl
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Publication number: 20020077230Abstract: An exercise unit that is a bench-based, has an easily adjustable load exercise system using a resistance engine that can provide a constant load level through the entire range of motion to approximate the use of free-weights, is portable, and reconfigures easily to several different shapes for different exercises. The exercise unit is compact, has a minimal vertical height, and weighs much less than the maximum resistance load that it can create. The bench unit can be stood on its end for compact storage.Type: ApplicationFiled: March 8, 2001Publication date: June 20, 2002Inventors: Andrew P. Lull, Zachary D. Krapfl, William A. Baker, Patrick A. Warner, Michael H. Harding, Richard W. Trevino