Patents by Inventor Mark A. Krull

Mark A. Krull 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).

  • Patent number: 7540832
    Abstract: An exercise device including one or more weight stacks moveably supported on a frame. Each weight stack includes one or more weight plates that may be selectively engaged by way of a dial arrangement operably coupled with the weight stack. The dial arrangement is connected with a selection member that extends through a selection aperture in the weight plates. Each selection aperture defines a unique contour with at least one engaging surface, such as a tab. The selection member has corresponding protrusions adapted to engage the engaging surface of the weight plate. Each dial arrangement may be configured so that the weight stack may only be actuated when the selection member is properly positioned so that the protrusions properly engage the engaging surfaces. By adjusting the dial setting, the selection member is rotated so that one or more of the various protrusions engage associated engaging surfaces in order to engage some combination of weight plates. Upon actuation (i.e.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: June 2, 2009
    Assignee: Nautilus, Inc.
    Inventor: Mark A. Krull
  • Patent number: 7537550
    Abstract: Weights are arranged in a vertical stack and movably mounted on a frame. On some embodiments, variable length members are provided to exert upward force against a weight supporting member associated with the stack when the weight supporting member is proximate its rest position relative to the frame. On other embodiments, the weights are rotated relative to the frame to selectively engage and disengage the weights for purposes of providing resistance to exercise motion.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: May 26, 2009
    Inventor: Mark A. Krull
  • Patent number: 7534199
    Abstract: An exercise dumbbell has at least one weight selector that is rotatable into engagement with various combination of weights at opposite ends of the handle. On a first embodiment, first and second weight selectors are rotatably mounted on opposite ends of a bar for independent rotation relative to the handle. On a second embodiment, first and second weight selectors are keyed to a common bar and rotated together therewith relative to the handle.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 19, 2009
    Assignee: Nautilus, Inc.
    Inventor: Mark A. Krull
  • Patent number: 7507189
    Abstract: An exercise device including one or more weight stacks moveably supported on a frame. Each weight stack includes one or more weight plates that may be selectively engaged by way of a dial arrangement operably coupled with the weight stack. The dial arrangement is connected with a selection member that extends through a selection aperture in the weight plates. Each selection aperture defines a unique contour with at least one engaging surface, such as a tab. The selection member has corresponding protrusions adapted to engage the engaging surface of the weight plate. Each dial arrangement may be configured so that the weight stack may only be actuated when the selection member is properly positioned so that the protrusions properly engage the engaging surfaces. By adjusting the dial setting, the selection member is rotated so that one or more of the various protrusions engage associated engaging surfaces in order to engage some combination of weight plates. Upon actuation (i.e.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: March 24, 2009
    Assignee: Nautilus, Inc.
    Inventor: Mark A. Krull
  • Patent number: 7507186
    Abstract: An exercise apparatus includes a frame configured to rest on a floor surface; left and right rocker links pivotally mounted on the frame; left and right reciprocating links having forward ends rotatably coupled to respective rocker links, and rearward ends constrained to move in reciprocal fashion relative to the frame; left and right cranks rotatably mounted on the frame; left and right drive links having forward ends rotatably coupled to respective cranks, and rearward ends rotatably coupled to intermediate portions of respective reciprocating members; and left and right foot links having forward ends rotatably coupled to respective rocker links, and rearward, foot supporting ends supported by respective drive links for both rotational and translational movement relative thereto. The resulting linkage assemblies constrain the foot supporting ends to move through elliptical paths, and the paths may be altered by adjusting various components of the linkage assemblies relative to one another and/or the frame.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: March 24, 2009
    Inventors: Kenneth W. Stearns, Joseph D. Maresh, Mark A. Krull
  • Patent number: 7497814
    Abstract: At least one set of weights is arranged into a stack for selective connection to a weight lifting member. On some embodiments, a vertical stack of weights is disposed beneath the weight lifting member, and at least one selector rod is rotatably mounted on the weight lifting member and selectively rotated into engagement with a desired number of the vertically stacked weights. On some embodiments, a horizontal stack of weights is disposed on opposite sides of the weight lifting member, and at least one selector rod is movably mounted on the weight lifting member and selectively moved into engagement with the desired number of horizontally stacked weights. The horizontal stack of weights may be used to supplement the vertical stack of weights, or on an independent exercise device, such as a dumbbell.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: March 3, 2009
    Inventor: Mark A. Krull
  • Patent number: 7497813
    Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Weight selectors are movable into and out of engagement with different combinations of the weight plates to secure a desired amount of mass to the handle. The weight selectors are preferably nested within respective ends of the handle member and accessible via upwardly opening slots in the weight plates.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: March 3, 2009
    Inventor: Mark A. Krull
  • Publication number: 20080254953
    Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Knobs on the handle member have contoured bearing surfaces that bear against respective selector members to alternatively hold the selector members in weight engaging positions and disengaged positions.
    Type: Application
    Filed: June 17, 2008
    Publication date: October 16, 2008
    Inventor: Mark A. Krull
  • Publication number: 20080227602
    Abstract: An exercise apparatus includes a frame configured to rest on a floor surface; left and right rocker links pivotally mounted on the frame; left and right reciprocating links having forward ends rotatably coupled to respective rocker links, and rearward ends constrained to move in reciprocal fashion relative to the frame; left and right cranks rotatably mounted on the frame; left and right drive links having forward ends rotatably coupled to respective cranks, and rearward ends rotatably coupled to intermediate portions of respective reciprocating members; and left and right foot links having forward ends rotatably coupled to respective rocker links, and rearward, foot supporting ends supported by respective drive links for both rotational and translational movement relative thereto. The resulting linkage assemblies constrain the foot supporting ends to move through elliptical paths, and the paths may be altered by adjusting various components of the linkage assemblies relative to one another and/or the frame.
    Type: Application
    Filed: October 23, 2007
    Publication date: September 18, 2008
    Inventors: Kenneth W. Stearns, Joseph D. Maresh, Mark A. Krull
  • Patent number: 7387597
    Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Knobs on the handle member have contoured bearing surfaces that bear against respective selector members to alternatively hold the selector members in weight engaging positions and disengaged positions.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: June 17, 2008
    Inventor: Mark A. Krull
  • Patent number: 7367927
    Abstract: Various exercise systems include first and second selectorized dumbbell assemblies; and a frame having first and second weight supports to support respective dumbbell assemblies. Generally speaking, the systems assume multiple configurations to facilitate both use and storage of the dumbbell assemblies. Many of the systems include at least one body supporting platform that is movable between a first position that is suitable for exercise, and a second position that is suitable for transportation and/or storage.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: May 6, 2008
    Inventor: Mark A. Krull
  • Patent number: 7361123
    Abstract: An exercise bench includes a back support and first and second legs pivotally connected to respective ends of the back support. The legs are pivotal between positions extending generally perpendicular to the back support, and positions extending generally parallel to the back support. In addition to facilitating typical bench-related exercises, the bench is available for use as an aerobic step when the legs extend generally parallel to the back support, and as a high-level step when the legs extend generally perpendicular to the back support. Different latching mechanisms may be used to lock the legs in place, and/or the bench may be arranged in an inclined orientation by moving the legs to different positions. Handles and/or foot supports may be provided at one or more ends of the bench, as well.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: April 22, 2008
    Inventor: Mark A. Krull
  • Patent number: 7361075
    Abstract: A hand-held amusement device has a variety of features that encourage manipulative activities in and/or by a person's hand. These features may include various combinations of a base that is configured for rocking back and forth on a support surface; a cylinder that rotates relative to the base; a plunger that telescopes relative to the base; a clip that slides back and forth on the base; a lever that pivots back and forth on the base; a hole that extends through an end of the base to facilitate twirling of the device about a finger; at least one word embossed in braille on the base; and a spherical ball that is rotatably mounted in the base and protrudes outward from the base. The base may also be configured for rotation about as many as three orthogonal axes while supported in respective positions between a person's thumb and an opposing finger.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: April 22, 2008
    Inventor: Mark A. Krull
  • Patent number: 7300390
    Abstract: Weight selecting members are movably mounted on a handle assembly and selectively rotatable into engagement with respective weight plates to provide adjustable resistance to exercise movement. The weight selecting members rotate into and out of notches associated with any combination of the weight plates.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: November 27, 2007
    Inventor: Mark A. Krull
  • Patent number: 7291102
    Abstract: An exercise apparatus includes a floor engaging base, a vertical stanchion, and at least one body support. Cables are interconnected between respective handles and respective pivot arms. At least one resistance device is interconnected between the pivot arms and the frame. The cables are routed about pulleys on the frame in a manner that facilitates different types of exercise motions. Adjustments to resistance may be made by repositioning at least one of the cables and the resistance device relative to the pivot arms.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: November 6, 2007
    Inventors: Ross A. Mackert, Mark A. Krull, Dale R. Henn, Neal P. Barnes
  • Patent number: 7291098
    Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Weight selectors are rotatable into and out of engagement with different combinations of the weight plates to secure a desired amount of mass to the handle. The weight selectors occupy respective upwardly closed notches in the weights to secure the weights to the handle member. Different arrangements may be used to bias the weight selectors toward desired orientations relative to the weight plates, and/or to lock the weight selectors in desired orientations relative to the weight plates.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: November 6, 2007
    Inventor: Mark A. Krull
  • Patent number: 7264578
    Abstract: On some embodiments, a vertical stack of weights is disposed beneath a base member, and at least one selector rod is rotatably mounted on the base member and selectively rotated into engagement with a desired number of the vertically stacked weights. On other embodiments, a horizontal stack of weights is disposed on opposite sides of a base member, and at least one selector rod is movably mounted on the base member and selectively moved into engagement with the desired number of horizontally stacked weights. On still other embodiments, these two types of arrangements are implemented in combination. Various methods may be performed using various combinations of these arrangements to provide adjustable resistance to exercise. In one such method, a base member is lifted by grasping a handle that extends longitudinally between first and second weight engaging ends of the base member.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: September 4, 2007
    Inventor: Mark A. Krull
  • Publication number: 20070203001
    Abstract: An exercise device including one or more weight stacks moveably supported on a frame. Each weight stack includes one or more weight plates that may be selectively engaged by way of a dial arrangement operably coupled with the weight stack. The dial arrangement is connected with a selection member that extends through a selection aperture in the weight plates. Each selection aperture defines a unique contour with at least one engaging surface, such as a tab. The selection member has corresponding protrusions adapted to engage the engaging surface of the weight plate. Each dial arrangement may be configured so that the weight stack may only be actuated when the selection member is properly positioned so that the protrusions properly engage the engaging surfaces. By adjusting the dial setting, the selection member is rotated so that one or more of the various protrusions engage associated engaging surfaces in order to engage some combination of weight plates. Upon actuation (i.e.
    Type: Application
    Filed: April 30, 2007
    Publication date: August 30, 2007
    Applicant: Nautilus, Inc.
    Inventor: Mark Krull
  • Publication number: 20070167300
    Abstract: An exercise dumbbell includes a handle member and weight plates maintained in spaced relationship at opposite ends thereof. Knobs on the handle member have contoured bearing surfaces that bear against respective selector members to alternatively hold the selector members in weight engaging positions and disengaged positions.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 19, 2007
    Inventor: Mark A. Krull
  • Publication number: 20070010382
    Abstract: An exercise apparatus includes a floor engaging base, a vertical stanchion, and at least one body support. Cables are interconnected between respective handles and respective pivot arms. At least one resistance device is interconnected between the pivot arms and the frame. The cables are routed about pulleys on the frame in a manner that facilitates different types of exercise motions. Adjustments to resistance may be made by repositioning at least one of the cables and the resistance device relative to the pivot arms.
    Type: Application
    Filed: May 23, 2006
    Publication date: January 11, 2007
    Inventors: Ross Mackert, Mark Krull, Dale Henn, Neal Barnes