Abstract: A hand-held sports or exercise training device configured to improve the swing of a user that includes a hollow body defining a interior volume extending within the device and a slidable mass having an passage that extends through the mass in the direction of movement, or, alternative, one or more passages that allow air flow are contained in a sleeve housing the slidable mass and/or in the bat end. The slidable mass is contained within the interior volume or an added sleeve and is in contact with an interior circumference of the hollow body or sleeve. As a user swings the device, the moment of inertia for the device changes such that swing mechanics and/or timing can be improved.

Abstract: A hand-held sports or exercise training device configured to improve the swing of a user that includes a hollow body defining a interior volume extending within the device and a slidable mass having an passage that extends through the mass in the direction of movement, or, alternative, one or more passages that allow air flow are contained in a sleeve housing the slidable mass and/or in the bat end. The slidable mass is contained within the interior volume or an added sleeve and is in contact with an interior circumference of the hollow body or sleeve. As a user swings the device, the moment of inertia for the device changes such that swing mechanics and/or timing can be improved.

Abstract: A bat that includes a hollow body defining a interior volume extending within a barrel portion of the bat and a slidable mass having an passage that extends through the mass in the direction of movement. The slidable mass is contained within the interior volume and is in contact with an interior circumference of the hollow body. As a user swings the bat, the moment of inertia for the bat changes such that swing mechanics and timing are improved.

Abstract: A bat that includes a hollow body defining a interior volume extending within a barrel portion of the bat and a slidable mass having an passage that extends through the mass in the direction of movement. The slidable mass is contained within the interior volume or an added sleeve and is in contact with an interior circumference of the hollow body or sleeve. As a user swings the bat, the moment of inertia for the bat changes such that swing mechanics and timing are improved.

Abstract: A bat that includes a hollow body defining a interior volume extending within a barrel portion of the bat and a slidable mass having an passage that extends through the mass in the direction of movement. The slidable mass is contained within the interior volume and is in contact with an interior circumference of the hollow body. As a user swings the bat, the moment of inertia for the bat changes such that swing mechanics and timing are improved.

Abstract: An article for supporting a material that includes a hanger of rigid material, with the hanger including a first planar portion connected to an offset but parallel second planar portion by a planar shoulder disposed perpendicularly to both the first and second planar portions and further including at least one spike disposed upon a front surface of the first planar portion and at least one notch disposed upon a side surface of the second planer portion. A pair of hangers may be used to form a shelf-like support through connecting the pair of hangers with a wire or filament engaged within a notch, a barb, or both.

Abstract: An article for supporting a material that includes a hanger of rigid material, with the hanger including a first planar portion connected to an offset but parallel second planar portion by a planar shoulder disposed perpendicularly to both the first and second planar portions and further including at least one spike disposed upon a front surface of the first planar portion and at least one notch disposed upon a side surface of the second planer portion. A pair of hangers may be used to form a shelf-like support through connecting the pair of hangers with a wire or filament engaged within a notch, a barb, or both.

Abstract: A bag including a resilient support that can stand upright independently and is encased in flexible sheet material. The support is elastically deformed and tensions the sheet material as the support attempts to return to an undeformed condition. The bag can be provided with a cover and handles as well as an arrangement for inhibiting tipping or displacement of the bag.

Abstract: A holder for supporting insulation in a building has an elongated supporting section for the insulation to rest on. Two arms extend in parallel from the two ends of the supporting section, and each arm carries a U-shaped member which can be pushed onto a stud or beam by elastically spreading apart the legs of the U-shaped member. Each U-shaped member is provided with at least one hook-like portion which is elastically urged onto the respective stud or beam to anchor the holder thereto.