Chuck
AssigneeDouble-E Inc.
InventorRichard Edward Flagg
Life of this patent
Estimating the term…
Abstract
A chuck for internally gripping a hollow member comprising an interior member having a longitudinal axis and including a plurality of generally planar exterior surfaces each parallel to the axis; a plurality of rollers, each roller parallel to and in contact with one of those surfaces; a plurality of jaw members, each having an arcuate interior surface in contact with at least one of the rollers; and means for resiliently maintaining the jaw members in contact with the rollers.
Claims15
In a core chuck comprising an interior member having a longitudinal axis and including a plurality of generally planar exterior surfaces each parallel to said axis, a plurality of rollers, each roller parallel to and in contact with one of said generally planar surfaces, a plurality of jaw members, each jaw member having an arcuate interior surface in contact with at least one of said rollers, and means for resiliently maintaining said jaw members in contact with said rollers, the improvement comprising the provision of jaw orientation means which limit the relative rotational movement, around said axis, between a jaw member and an underlying roller, said jaw orientation means comprising a lug secured to said jaw member and projecting inwardly from the inner surface of said jaw member.
In a core chuck comprising an interior member having a longitudinal axis and including a plurality of generally planar exterior surfaces each parallel to said axis, the exterior shape of said interior member in its axially central region in a cross-section taken perpendicular to said longitudinal axis being a regular polygon having at least six sides, a plurality of rollers, each roller parallel to and in contact with one of said generally planar surfaces, a plurality of jaw members, each jaw member having an arcuate interior surface, the number of jaw members being equal to or less than 1/2 the number of sides of said polygon, the interior surface of each said jaw member being in contact with at least two of said rollers, and means for resiliently maintaining said jaw members in contact with said rollers, the improvement comprising the provision of jaw orientation means for limiting the relative rotational movement, around said axis, between a jaw member and the underlying rollers, said jaw orientation means comprising first and second pairs of circumferentially spaced lugs projecting radially inwardly from said inner surface of said jaw member, each of the lugs of said second pair being aligned with a lug of said first pair, said second pair of lugs being longitudinally spaced from said first pair of lugs.
In a core chuck comprising an interior member having a longitudinal axis and including a plurality of generally planar exterior surfaces each parallel to said axis, the exterior shape of said interior member in its axially central region in a cross-section taken perpendicular to said longitudinal axis being a regular polygon having at least six sides, a plurality of rollers, each roller parallel to and in contact with one of said generally planar surfaces, a plurality of jaw members, each jaw member having an arcuate interior surface, the number of jaw members being equal to or less than 1/2 the number of sides of said polygon, the interior surface of each said jaw member being in contact with at least two of said rollers, and means for resiliently maintaining said jaw members in contact with said rollers, the improvement comprising the provision of jaw orientation means for limiting the relative rotational movement, around said axis, between a jaw member and the underlying rollers, said jaw orientation means comprising a first pair of circumferentially spaced lugs projecting inwardly from said inner surface of said jaw member and a second pair of lugs projecting radially inwardly from said inner surface of said jaw member, each of the lugs of said second pair being aligned with a lug of said first pair, said second pair of lugs being longitudinally spaced from said first pair of lugs, said axially central region of said interior member confined to the longitudinal region between said first and second pairs of lugs, the cross-sectional shape of said interior member outside of said axially central region being circular and having a diameter of less than the diameter of a reference circle drawn tangent to the apexes of said regular polygon.
In a core chuck having a longitudinal axis and comprising a plurality of exterior, radially movable jaw members and interior means for applying to said jaw members a radially outward force in response to a relative rotation between said jaw members and said interior means, the improvement wherein said jaw members are movable circumferentially around said axis relative to said interior means and a lug is secured to one of said jaw members and projects inwardly therefrom and limits the circumferential movement of said one jaw member relative to said interior means.
Dependencies are inferred from the claim text.