A mobile tool stand includes a base frame unit, a support unit connected to the base frame unit for supporting the base frame unit on the floor, and a carrier unit. The carrier unit includes a carrier plate for carrying a machine tool, a pair of links pivotally connected between the carrier plate an
A mobile tool stand includes a base frame unit, a support unit connected to the base frame unit for supporting the base frame unit on the floor, and a carrier unit. The carrier unit includes a carrier plate for carrying a machine tool, a pair of links pivotally connected between the carrier plate and the base frame unit and movable relative to the carrier plate to move the stand between a collapsed position and a supporting position, and a pair of coupling rods pivotally connected to the carrier plate and slidingly coupled to the base frame unit, such that the coupling rods are movable in and out of the base frame unit. Thus, the tool that is carried on the carrier plate can be safely moved from place to place when the mobile tool stand is set in the collapsed, transporting condition.
대표청구항▼
1. A mobile tool stand comprising: a base frame unit having a first end part, a second end part opposed to the first end part, and a middle part positioned therebetween;a support unit connected to the base frame unit and adapted for supporting the base frame unit; anda carrier unit mounted on the ba
1. A mobile tool stand comprising: a base frame unit having a first end part, a second end part opposed to the first end part, and a middle part positioned therebetween;a support unit connected to the base frame unit and adapted for supporting the base frame unit; anda carrier unit mounted on the base frame unit and having a carrier plate, a pair of fixed-length links pivotally connected to two corners of a first lateral side of the carrier plate and to the middle part of the base frame unit, and a pair of coupling rods pivotally connected to two corners of a second lateral side of the carrier plate, and telescopically coupled to the second end part of the base frame unit such that the second lateral side of the carrier plate is both freely pivotable and axially slidable relative to the base frame unit;wherein each link includes a first end pivotally connected to the base frame unit at the middle part thereof, and a second end opposed to the first end and pivotally connected to two corners of the first lateral side of the carrier plate, and the second ends of the links are movable between a collapsed position, where the second ends of the links are maintained in proximity to the base frame unit, and an extended position, where the second ends of the links are spaced from the base frame unit, and the coupling rods are moved relative to the second end part of the base frame unit when the links are moved between the collapsed position and the extended position;wherein when the mobile tool stand is collapsed, the links are forced to move the carrier plate toward the base frame unit and the carrier plate is forced to move the coupling rods axially relative to the base frame unit in order to lower the center of gravity of the mobile tool stand, and then the support unit can be set in a collapsed position. 2. The mobile tool stand according to claim 1, wherein the second end part of the base frame unit comprises: two generally parallel hollow extension tubes, each having an inner hole extending along the length thereof, and an end flange arranged around an open side of the inner hole; andthe coupling rods are generally straight rods respectively slidably inserted into the inner holes of the extension tubes;wherein the second lateral side of the carrier plate is configured to move closer to the end flanges of the extension tubes when the second ends of the links move to the collapsed position, and the second lateral side of the carrier plate is configured to move away from the end flanges of the extension tubes when the second ends of the links move to the extended position. 3. The mobile tool stand according to claim 2, wherein the support unit comprises: a connection end pivotally connected to the base frame unit at the middle part thereof;a free end opposed to the connection end, and movable between a collapsed position, against the base frame unit, and an extended supporting position arranged to support the stand on a supporting surface. 4. The mobile tool stand according to claim 3, wherein the free end of the support unit is further movable to a push-pull position opposite to the collapsed position where the free end protrudes over the second end part of the base frame unit. 5. The mobile tool stand according to claim 4, wherein the support unit comprises: two support rods, each having a connection end and a free end; andthe mobile tool stand further includes a first locking unit installed between the base frame unit and the support rods, the first locking unit having;two first locking plates respectively affixed to the base frame unit to which the connection ends of said support rods are pivotally connected, and each having a plurality of locating holes;two first locking bars respectively pivotally connected to the support rods, a locking tip for engaging one of the locating holes of the associated locking plate, and a handle opposed to the locking tip; andtwo spring members, respectively mounted between the handles of the first locking bars and the support rods;wherein the locking tips of the first locking bars are selectively engaged within the respective locating holes of the first locking plates when the free ends of the support rods are set in one of the extended position, received position and push-pull position. 6. The mobile tool stand according to claim 5, wherein the carrier unit further comprises: a second locking unit mounted between the carrier plate and the links, the second locking unit having;two second locking plates respectively affixed to the carrier plate, to which the second ends of the links are pivotally connected, and having a plurality of locating holes;two second locking bars respectively pivoted to the second ends of said links, and having a locking tip for engaging one of the locating holes of the associated second locking plate, and a handle opposed to the locking tip; andtwo spring members mounted between the handles of the second locking bars and the links;wherein the locking tips of the second locking bars are selectively engaged within the locating holes of the second locking plates when the second ends of the links are set in one of the extended position and the collapsed position. 7. The mobile tool stand according to claim 5, wherein the plurality of locating holes includes a first locating hole, a second locating hole positioned 180 degrees from the first locating hole, and a third locating hole positioned between the first and second locating holes. 8. The mobile tool stand according to claim 1, wherein the support unit comprises: a connection end pivotally connected to the base frame unit at the middle part thereof, and a free end opposed to the connection end, the free end movable between a collapsed position, where the free end is abutted against the base frame unit, and an extended position, where the free end is maintained spaced from the base frame unit and arranged to abut a supporting surface. 9. The mobile tool stand according to claim 8, wherein the free end of the support unit is moveable to a push-pull position opposed to the collapsed position, where the free end protrudes over the second end part of the base frame unit. 10. The mobile tool stand according to claim 9, wherein the support unit comprises: two support rods, each having a connection end and a free end; andthe mobile tool stand further includes a first locking unit installed between the base frame unit and the support rods, the first locking unit having;two first locking plates respectively affixed to the base frame unit to which the connection ends of said support rods are pivotally connected, and each having a plurality of locating holes;two first locking bars respectively pivotally connected to the support rods, a locking tip for engaging one of the locating holes of the associated locking plate, and a handle opposed to the locking tip; andtwo spring members, respectively mounted between the handles of the first locking bars and the support rods;wherein the locking tips of the first locking bars are selectively engaged within the respective locating holes of the first locking plates when the free ends of the support rods are set in one of the extended position, received position and push-pull position. 11. The mobile tool stand according to claim 10, wherein the carrier unit further comprises: a second locking unit mounted between the carrier plate and the links, the second locking unit having;two second locking plates respectively affixed to the carrier plate, to which the second ends of the links are pivotally connected, and having a plurality of locating holes;two second locking bars respectively pivoted to the second ends of said links, and having a locking tip for engaging one of the locating holes of the associated second locking plate, and a handle opposed to the locking tip; andtwo spring members mounted between the handles of the second locking bars and the links;wherein the locking tips of the second locking bars are selectively engaged within the locating holes of the second locking plates when the second ends of the links are set in one of the extended position and the collapsed position. 12. The mobile tool stand according to claim 9, wherein the plurality of locating holes includes a first locating hole, a second locating hole positioned 180 degrees from the first locating hole, and a third locating hole positioned between the first and second locating holes. 13. The mobile tool stand according to claim 1, further comprising a pair of wheels rotatably mounted to the first end of the base frame unit. 14. The mobile tool stand according to claim 1, further comprising a bumper bar extending generally perpendicularly from the first end of the base frame unit. 15. The mobile tool stand according to claim 1, wherein each of the links has a same fixed length in both the collapsed and extended positions. 16. The mobile tool stand according to claim 1, wherein the carrier plate is shaped generally as an open rectangular frame. 17. A mobile tool stand comprising: a base frame unit having a first end part, a second end part opposed to the first end part, and a middle part positioned therebetween;a support unit connected to the base frame unit and adapted for supporting the base frame unit and having two support rods, each having a connection end and a free end;a first locking unit installed between the base frame unit and the support rods, the first locking unit having two first locking plates respectively affixed to the base frame unit to which the connection ends of said support rods are pivotally connected, and each having a plurality of locating holes, two first locking bars respectively pivotally connected to the support rods, a locking tip for engaging one of the locating holes of the associated locking plate, and a handle opposed to the locking tip and two spring members, respectively mounted between the handles of the first locking bars and the support rods; andwherein the locking tips of the first locking bars are selectively engaged within the respective locating holes of the first locking plates when the free ends of the support rods are set in one of the extended position, received position and push-pull position; anda carrier unit mounted on the base frame unit and having a carrier plate, a pair of links pivotally connected between a first lateral side of the carrier plate and the base frame unit, and a pair of coupling rods pivotally coupled to a second lateral side of the carrier plate, and telescopically coupled to the second end part of the base frame unit;a second locking unit mounted between the carrier plate and the links, the second locking unit having two second locking plates respectively affixed to the carrier plate, to which the second ends of the links are pivotally connected, and having a plurality of locating holes, two second locking bars respectively pivoted to the second ends of said links, and having a locking tip for engaging one of the locating holes of the associated second locking plate, and a handle opposed to the locking tip, two spring members mounted between the handles of the second locking bars and the links, anda rope connected between the second locking bars, and having two distal ends respectively connected to the handle of one of the second locking bars and the locking tip of the other of the second locking bars;wherein each link includes a first end pivotally connected to the base frame unit at the middle part thereof, and a second end opposed to the first end and pivotally connected to the carrier plate, and the second ends of the links are movable between a collapsed position, where the second ends of the links are maintained in proximity to the base frame unit, and an extended position, where the second ends of the links are spaced from the base frame unit, and the coupling rods are moved relative to the second end part of the base frame unit when the links are moved between the collapsed position and the extended position;wherein when the mobile tool stand is collapsed, the links are forced to move the carrier plate toward the base frame unit and the carrier plate is forced to move the coupling rods axially relative to the base frame unit in order to lower the center of gravity of the mobile tool stand, and then the support unit can be set in a collapsed position. 18. A mobile tool stand comprising: a base frame unit having a first end part, a second end part opposed to the first end part, and a middle part positioned therebetween;a support unit connected to the base frame unit and adapted for supporting the base frame unit and having two support rods, each having a connection end and a free end;a first locking unit installed between the base frame unit and the support rods, the first locking unit having two first locking plates respectively affixed to the base frame unit to which the connection ends of said support rods are pivotally connected, and each having a plurality of locating holes, two first locking bars respectively pivotally connected to the support rods, a locking tip for engaging one of the locating holes of the associated locking plate, and a handle opposed to the locking tip and two spring members, respectively mounted between the handles of the first locking bars and the support rods; andwherein the locking tips of the first locking bars are selectively engaged within the respective locating holes of the first locking plates when the free ends of the support rods are set in one of the extended position, received position and push-pull position; anda carrier unit mounted on the base frame unit and having a carrier plate, a pair of links pivotally connected between a first lateral side of the carrier plate and the base frame unit, and a pair of coupling rods pivotally coupled to a second lateral side of the carrier plate, and telescopically coupled to the second end part of the base frame unit;a second locking unit mounted between the carrier plate and the links, the second locking unit having two second locking plates respectively affixed to the carrier plate, to which the second ends of the links are pivotally connected, and having a plurality of locating holes, two second locking bars respectively pivoted to the second ends of said links, and having a locking tip for engaging one of the locating holes of the associated second locking plate, and a handle opposed to the locking tip, two spring members mounted between the handles of the second locking bars and the links, anda rope connected between the second locking bars, and having two distal ends respectively connected to the handle of one of the second locking bars and the locking tip of the other of the second locking bars;an operating member fixedly connected to the locking tip of one the second locking bars;wherein each link includes a first end pivotally connected to the base frame unit at the middle part thereof, and a second end opposed to the first end and pivotally connected to the carrier plate, and the second ends of the links are movable between a collapsed position, where the second ends of the links are maintained in proximity to the base frame unit, and an extended position, where the second ends of the links are spaced from the base frame unit, and the coupling rods are moved relative to the second end part of the base frame unit when the links are moved between the collapsed position and the extended position;wherein when the mobile tool stand is collapsed, the links are forced to move the carrier plate toward the base frame unit and the carrier plate is forced to move the coupling rods axially relative to the base frame unit in order to lower the center of gravity of the mobile tool stand, and then the support unit can be set in a collapsed position.
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이 특허에 인용된 특허 (70)
Adair William A. (Des Plaines IL) Johnson Lyle A. (Spencer WI), Adjustable locking mechanism for tilting tables and the like.
Luedke Thomas J. (Apple Valley MN) Aagaard Randy G. (Richfield MN) Niemi Carl A. (Excelsior MN) Shea Andrew J. (Eden Prairie MN), Folding stage system.
Cory Thomas R. (2354 Tecumseh Brooklyn MI 49230) Cory Lyman R. (13861 Vischer Brooklyn MI 48230) Maloney Edward P. (22170 W. Nine Mile Southfield MI 48034), Game carrier.
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