초록 ▼

A self-jacking, mobile power tool stand has an extended or erect position and a collapsed position. The geometry of various components of the stand facilitates self-erection of the stand to the raised position and the jacking of a pair of wheels off the floor so as to minimize vibrations from the po

A self-jacking, mobile power tool stand has an extended or erect position and a collapsed position. The geometry of various components of the stand facilitates self-erection of the stand to the raised position and the jacking of a pair of wheels off the floor so as to minimize vibrations from the power tool during operations. Conversely, when in the closed position, the stand can be used to transport the power tool in the manner of a conventional two-wheeled handtruck.

대표청구항 ▼

1. A collapsible, self-jacking mobile power tool stand, comprising: an elongated power tool bed having first and second ends for removably supporting a power tool;a substantially handtruck-shaped bed support having an upper end laterally slidably connected to the power tool bed, an intermediate leve

1. A collapsible, self-jacking mobile power tool stand, comprising: an elongated power tool bed having first and second ends for removably supporting a power tool;a substantially handtruck-shaped bed support having an upper end laterally slidably connected to the power tool bed, an intermediate lever arm portion and a distal foot portion having a preselected length terminating in a free end and forming a preselected foot portion angle with respect to the lever arm portion, wherein the bed support is movable with respect to the power tool bed between stowed and extended positions;a pair of swing-out legs having upper ends pivotally connected adjacent the power tool bed first end and distal free ends for contacting a substantially planar support surface, the legs being pivotable between stowed and extended positions;a pair of struts, each strut having a first end pivotally connected adjacent the power tool bed first end and a distal second end pivotally connected to the bed support so as to be pivotable between stowed and extended position forming an angle α between each strut and the power tool bed in the extended position; and,a pair of wheels each having a preselected radius R and being rotatably connected to the bed support for rolling the stand on the support surface when the bed support, struts, and legs are in their respective stowed positions and so that when the bed support, struts, and legs are in their respective extended positions the wheels are lifted from the support surface and the stand is primarily supported by the leg and the foot portion free ends, including a biasing mechanism interconnected between the struts and the power tool bed to at least partially counterbalance a power tool on the power tool bed and to bias the struts and the bed support toward their respective extended positions. 2. The power tool stand of claim 1, wherein the bed support upper end is substantially adjacent the power tool bed second end when in the extended position such that the bed support lever arm portion and the power tool bed form an acute angle β with respect to each other. 3. The power tool stand of claim 2, wherein the angle α is acute and wherein the struts each form an acute angle γ with respect to the bed support when the struts and bed support are in their respective extended positions. 4. The power tool stand of claim 3, wherein α, β, and γ are approximately equal to 35, 75, and 70 degrees, respectively. 5. The power tool stand of claim 4, wherein R is approximately equal to 6 inches and d is approximately equal to 14.29 inches. 6. The power tool stand of claim 5, wherein the bed support free end is substantially tubular and has a diameter of approximately 1.38 inches. 7. The power tool stand of claim 2, wherein the foot portion free end is positioned a distance d from a diameter of one of the wheels normal to the support surface along a tangent of the one wheel in contact with the support surface wherein d is equal to or greater than approximately R and equal to or less than approximately R/tan (90 degrees−β). 8. A collapsible, self-jacking mobile power tool stand, comprising: an elongated power tool bed having first and second ends for supporting a power tool;a substantially handtruck-shaped bed support having an upper end laterally slidably connected to the power tool bed, an intermediate lever arm portion and a distal foot portion having a preselected length terminating in a free end and forming a preselected foot portion angle with respect to the lever arm portion, wherein the bed support is movable with respect to the power tool bed between stowed and extended positions;a swing-out leg having an upper end pivotally connected adjacent the power tool bed first end and a distal free end for contacting a substantially planar support surface, the leg being pivotable between stowed and extended positions;a strut having a first end pivotally connected adjacent the power tool bed first end and a distal second end pivotally connected to the bed support, so as to be pivotable between stowed and extended positions, forming an angle α between the strut and the power tool bed in the extended position; and,a wheel having a preselected radius R and being rotatably connected to the bed support for rolling the stand on the support surface when the bed support, strut, and leg are in their respective stowed positions and so that, when the bed support, strut, and leg are in their respective extended positions, the wheel is lifted from the support surface and the stand is primarily supported by the leg and the foot portion free ends, including a biasing mechanism interconnected between the strut and the power tool bed to at least partially counterbalance a power tool on the power tool bed and to bias the strut and the bed support toward their respective extended positions. 9. The power tool stand of claim 8, wherein the bed support upper end is substantially adjacent the power tool bed second end when in the extended position such that the bed support lever arm portion and the power tool bed form an acute angle β with respect to each other. 10. The power tool stand of claim 9, wherein the angle α is acute and wherein the strut forms an acute angle γ with respect to the bed support when the strut and bed support are in their respective extended positions. 11. The power tool stand of claim 10, wherein α, β, and γ are approximately equal to 35, 75, and 70 degrees, respectively. 12. The power tool stand of claim 11, wherein R is approximately equal to 6 inches and d is approximately equal to 14.29 inches. 13. The power tool stand of claim 12, wherein the bed support free end is substantially tubular and has a diameter of approximately 1.38 inches. 14. The power tool stand of claim 9, wherein the foot portion free end is positioned a distance d from a diameter of the wheel normal to the support surface along a tangent of the wheel in contact with the support surface wherein d is equal to or greater than approximately R and equal to or less than approximately R/tan (90 degrees−β). 15. The power tool stand of claim 8 including a saw plate removably attached to the power tool bed by a spring loaded latch mechanism.