Patents by Inventor Douglas A. Crawford
Douglas A. Crawford 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: 20130114775Abstract: A process for producing isotopes by continuously flowing a liquid stream, carrying capsules of target nuclei (NP-237) in solution, through a nuclear reactor (a TRIGA style nuclear reactor). Upon removal from the core of the nuclear reactor and after allowing for the decay of Np-238 to Pu-238, the capsules are emptied and the mixture of elements and isotopes are chemically separated using solvent extraction or ion exchange.Type: ApplicationFiled: August 29, 2012Publication date: May 9, 2013Applicant: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Steven D. HOWE, Jorge NAVARRO, Douglas CRAWFORD, Terry RING
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Publication number: 20120190509Abstract: An exercise device includes a first treadle assembly supporting a first moving surface and a second treadle assembly supporting a second moving surface. The exercise device further includes an upper body exercise assembly operably associated with the exercise device. The first treadle assembly is pivotally coupled with the frame structure, and the second treadle assembly is pivotally coupled with the frame structure. In another form, an exercise device includes a frame structure, a first treadle assembly having a first endless belt in rotatable engagement with a first roller, a second treadle assembly having a second endless belt in rotatable engagement with a second roller, and a flywheel operably coupled with the first endless belt and the second endless belt.Type: ApplicationFiled: April 3, 2012Publication date: July 26, 2012Applicant: Nautilus, Inc.Inventors: Douglas A. Crawford, Gary D. Piaget, Patrick A. Warner, Brent Christopher
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Publication number: 20120142501Abstract: An exercise device employing side-by-side pivotally supported moving surfaces. In one particular example, an exercise device employs a first belt deployed about a front roller and a rear roller and an adjacent second belt deployed about a front roller and a rear roller. The rear of the belts in the area of the rear rollers are pivotally secured and the front of the belts in the area of the front roller are adapted to reciprocate in an up and down motion during use. In some implementations, the moving surfaces include an interconnection structure such that a generally downward movement of one surface is coordinated with a generally upward movement of the other surface. In other implementations, the moving surfaces are operably associated with one or more resistance elements that effect the amount of force required to pivot or actuate the moving surfaces.Type: ApplicationFiled: February 14, 2012Publication date: June 7, 2012Applicant: Nautilus, Inc.Inventors: Gary Piaget, Douglas A. Crawford, Edward L. Flick, Bradley J. Smith, Matt Rauwerdink, Patrick A. Warner
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Patent number: 8147385Abstract: An exercise device includes a first treadle assembly supporting a first moving surface and a second treadle assembly supporting a second moving surface. The exercise device further includes an upper body exercise assembly operably associated with the exercise device. The first treadle assembly is pivotally coupled with the frame structure, and the second treadle assembly is pivotally coupled with the frame structure. In another form, an exercise device includes a frame structure, a first treadle assembly having a first endless belt in rotatable engagement with a first roller, a second treadle assembly having a second endless belt in rotatable engagement with a second roller, and a flywheel operably coupled with the first endless belt and the second endless belt.Type: GrantFiled: October 12, 2010Date of Patent: April 3, 2012Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Gary D. Piaget, Patrick A. Warner, Brent Christopher
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Patent number: 8113994Abstract: An exercise device employing side-by-side pivotally supported moving surfaces. In one particular example, an exercise device employs a first belt deployed about a front roller and a rear roller and an adjacent second belt deployed about a front roller and a rear roller. The rear of the belts in the area of the rear rollers are pivotally secured and the front of the belts in the area of the front roller are adapted to reciprocate in an up and down motion during use. In some implementations, the moving surfaces include an interconnection structure such that a generally downward movement of one surface is coordinated with a generally upward movement of the other surface. In other implementations, the moving surfaces are operably associated with one or more resistance elements that effect the amount of force required to pivot or actuate the moving surfaces.Type: GrantFiled: June 30, 2009Date of Patent: February 14, 2012Assignee: Nautilus, Inc.Inventors: Gary Piaget, Douglas A. Crawford, Edward L. Flick, Bradley J. Smith, Matthew Rauwerdink, Patrick A. Warner
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Publication number: 20110312472Abstract: An exercise device employing side-by-side pivotally supported moving surfaces. In one particular example, an exercise device employs a first belt deployed about a front roller and a rear roller and an adjacent second belt deployed about a front roller and a rear roller. The rear of the belts in the area of the rear rollers are pivotally secured and the front of the belts in the area of the front roller are adapted to reciprocate in an up and down motion during use. In some implementations, the moving surfaces include an interconnection structure such that a generally downward movement of one surface is coordinated with a generally upward movement of the other surface. In other implementations, the moving surfaces are operably associated with one or more resistance elements that effect the amount of force required to pivot or actuate the moving surfaces.Type: ApplicationFiled: August 23, 2011Publication date: December 22, 2011Applicant: Nautilus, Inc.Inventors: Gary Piaget, Brent Christopher, Brian R. Cook, Douglas A. Crawford, Edward L. Flick, Eric D. Golesh, Ben Monette, Randal Potter, Todd Singh, Matt Rauwerdink, Patrick A. Warner, Bradley J. Smith
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Patent number: 8002674Abstract: An exercise device employing side-by-side pivotally supported moving surfaces. In one particular example, an exercise device employs a first belt deployed about a front roller and a rear roller and an adjacent second belt deployed about a front roller and a rear roller. The rear of the belts in the area of the rear rollers are pivotally secured and the front of the belts in the area of the front roller are adapted to reciprocate in an up and down motion during use. In some implementations, the moving surfaces include an interconnection structure such that a generally downward movement of one surface is coordinated with a generally upward movement of the other surface. In other implementations, the moving surfaces are operably associated with one or more resistance elements that effect the amount of force required to pivot or actuate the moving surfaces.Type: GrantFiled: November 24, 2009Date of Patent: August 23, 2011Assignee: Nautilus, Inc.Inventors: Gary Piaget, Brent Christopher, Brian R. Cook, Douglas A. Crawford, Edward L. Flick, Eric D. Golesh, Ben Monette, Randal Potter, Todd Singh, Matt Rauwerdink, Patrick A. Warner, Bradley J. Smith
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Patent number: 8002680Abstract: A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.Type: GrantFiled: September 14, 2010Date of Patent: August 23, 2011Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Patrick A. Warner, Eric D. Golesh, Edward L. Flick, Lopin Wang
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Patent number: 7967730Abstract: The various embodiments of the present invention generally provide a control system and a process for an exercise apparatus configurable into a combined treadmill and stepper mode. The apparatus may also be configured into stepper only and treadmill only modes. The apparatus generally includes a master control unit, a first sensor, in communication with the master control unit, which generates a first signal indicative of an effective tread speed for the apparatus, and a resistive element that includes at least one resistance level. Using the first signal, the resistance level, and empirical information, the amount of energy expended by a user of the apparatus may be calculated and the operation of the apparatus controlled. Various sensors, actuators and information, such as that obtained from various data structures, may be utilized in performing calculations and controlling the features, functions and operation of the apparatus.Type: GrantFiled: November 16, 2009Date of Patent: June 28, 2011Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Bradley J. Smith
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Patent number: 7914421Abstract: The present invention relates to a locking mechanism for use with exercise treadmills capable of being selectively configured in an operating configuration or a storage configuration. The locking mechanism may utilize various configurations of engagement devices and/or locking members to allow a user to selectively lock a treadmill frame in a fixed position relative to a base frame.Type: GrantFiled: June 15, 2010Date of Patent: March 29, 2011Assignee: Nautilus, Inc.Inventors: Keith M. Weier, Douglas A. Crawford, Kuo-Ti Huang
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Publication number: 20110034303Abstract: An exercise device includes a first treadle assembly supporting a first moving surface and a second treadle assembly supporting a second moving surface. The exercise device further includes an upper body exercise assembly operably associated with the exercise device. The first treadle assembly is pivotally coupled with the frame structure, and the second treadle assembly is pivotally coupled with the frame structure. In another form, an exercise device includes a frame structure, a first treadle assembly having a first endless belt in rotatable engagement with a first roller, a second treadle assembly having a second endless belt in rotatable engagement with a second roller, and a flywheel operably coupled with the first endless belt and the second endless belt.Type: ApplicationFiled: October 12, 2010Publication date: February 10, 2011Applicant: Nautilus, Inc.Inventors: Douglas A. Crawford, Gary D. Piaget, Partick A. Warner, Brent Christopher
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Publication number: 20110003668Abstract: A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.Type: ApplicationFiled: September 14, 2010Publication date: January 6, 2011Applicant: Nautilus, Inc.Inventors: Douglas A. Crawford, Patrick A. Warner, Eric D. Golesh, Edward L. Flick, Lopin Wang
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Patent number: 7815549Abstract: Controlling the operation of an exercise apparatus configurable to facilitate a combination of a substantially horizontal and a substantially vertical exercise motion. Such control functions provide for various exercise levels and/or programs and may utilize various mechanisms, sensors, and other control apparatus to control the operation of the exercise apparatus for various exercise routines.Type: GrantFiled: February 25, 2005Date of Patent: October 19, 2010Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Andrew P. Lull, John Danile
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Patent number: 7811209Abstract: An exercise device includes a first treadle assembly supporting a first moving surface and a second treadle assembly supporting a second moving surface. The exercise device further includes an upper body exercise assembly operably associated with the exercise device. The first treadle assembly is pivotally coupled with the frame structure, and the second treadle assembly is pivotally coupled with the frame structure. In another form, an exercise device includes a frame structure, a first treadle assembly having a first endless belt in rotatable engagement with a first roller, a second treadle assembly having a second endless belt in rotatable engagement with a second roller, and a flywheel operably coupled with the first endless belt and the second endless belt.Type: GrantFiled: March 16, 2009Date of Patent: October 12, 2010Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Gary D. Piaget, Patrick A. Warner, Brent Christopher
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Publication number: 20100248904Abstract: The present invention relates to a locking mechanism for use with exercise treadmills capable of being selectively configured in an operating configuration or a storage configuration. The locking mechanism may utilize various configurations of engagement devices and/or locking members to allow a user to selectively lock a treadmill frame in a fixed position relative to a base frame.Type: ApplicationFiled: June 15, 2010Publication date: September 30, 2010Applicant: Nautilus, Inc.Inventors: Keith M. Weier, Douglas A. Crawford, Kuo-Ti Huang
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Patent number: 7794373Abstract: A dumbbell is described including a handle having a grip and at least one end, an inner plate mounted on the handle adjacent the grip, in a fixed rotational orientation, a support plate rotationally mounted on the handle adjacent the inner plate, at least one collar rotationally mounted on the handle adjacent the support plate, and rotationally fixed with the support plate, a selector knob rotationally mounted on the handle adjacent the at least one collar, and rotationally fixed with the collar, a weight plate removably mounted on the handle adjacent the at least one collar, and a means for selectively securing the support plate to the inner plate to resist the rotation of the support plate, collar and selector knob with respect to the inner plate and handle.Type: GrantFiled: October 14, 2009Date of Patent: September 14, 2010Assignee: Nautilus, Inc.Inventors: Douglas A. Crawford, Patrick A. Warner, Eric D. Golesh, Edward L. Flick, Lopin Wang
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Patent number: 7736280Abstract: The present invention relates to a locking mechanism for use with exercise treadmills capable of being selectively configured in an operating configuration or a storage configuration. The locking mechanism may utilize various configurations of engagement devices and/or locking members to allow a user to selectively lock a treadmill frame in a fixed position relative to a base frame.Type: GrantFiled: August 16, 2005Date of Patent: June 15, 2010Assignee: Nautilus, Inc.Inventors: Keith M. Weier, Douglas A. Crawford, Kuo-Ti Huang
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Patent number: 7704191Abstract: The present invention provides an exercise device that generally includes two treadles pivotally connected with a frame so that the treadles may pivot up and down about an axis. Each treadle includes a tread belt that provides a moving surface like a treadmill. Each tread belt is supported by a front roller and a rear roller, which is common to both treadles. The treadles are interconnected to provide an alternating upward and downward movement relative to each other. Opposing end portions of the rear roller are rotatably supported at the rear end of the frame. Outer sides of rear end portions of the treadles are rotatably supported by the outer end portions of the rear roller, and inner sides of rear end portions of the treadles are coupled with the frame through an inner support structure that defines a virtual pivot.Type: GrantFiled: February 25, 2005Date of Patent: April 27, 2010Assignee: Nautilus, Inc.Inventors: Bradley J. Smith, Richard W. Trevino, Douglas A. Crawford
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Publication number: 20100075812Abstract: An exercise device employing side-by-side pivotally supported moving surfaces. In one particular example, an exercise device employs a first belt deployed about a front roller and a rear roller and an adjacent second belt deployed about a front roller and a rear roller. The rear of the belts in the area of the rear rollers are pivotally secured and the front of the belts in the area of the front roller are adapted to reciprocate in an up and down motion during use. In some implementations, the moving surfaces include an interconnection structure such that a generally downward movement of one surface is coordinated with a generally upward movement of the other surface. In other implementations, the moving surfaces are operably associated with one or more resistance elements that effect the amount of force required to pivot or actuate the moving surfaces.Type: ApplicationFiled: November 24, 2009Publication date: March 25, 2010Applicant: Nautilus, Inc.Inventors: Gary Piaget, Brent Christopher, Brain R. Cook, Douglas A. Crawford, Edward L. Flick, Eric D. Golesh, Ben Monette, Randal Potter, Todd Singh, Matt Rauwerdink, Patrick A. Warner, Bradley J. Smith
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Publication number: 20100062904Abstract: The various embodiments of the present invention generally provide a control system and a process for an exercise apparatus configurable into a combined treadmill and stepper mode. The apparatus may also be configured into stepper only and treadmill only modes. The apparatus generally includes a master control unit, a first sensor, in communication with the master control unit, which generates a first signal indicative of an effective tread speed for the apparatus, and a resistive element that includes at least one resistance level. Using the first signal, the resistance level, and empirical information, the amount of energy expended by a user of the apparatus may be calculated and the operation of the apparatus controlled. Various sensors, actuators and information, such as that obtained from various data structures, may be utilized in performing calculations and controlling the features, functions and operation of the apparatus.Type: ApplicationFiled: November 16, 2009Publication date: March 11, 2010Applicant: Nautilus, Inc.Inventors: Douglas A. Crawford, Bradley J. Smith