An expandable car jack including a base with a first base extension member and a second extension member rotatably, removably, and directly coupled to one another, the first and second base extension members operably configured to rotate with respect to one another to define a planar lower support s
An expandable car jack including a base with a first base extension member and a second extension member rotatably, removably, and directly coupled to one another, the first and second base extension members operably configured to rotate with respect to one another to define a planar lower support surface forming an x-shape or a substantially perpendicular configuration. The expandable car jack may also include a plurality of hinged members supported by the base, wherein the plurality of hinged members define a lifting surface and are coupled together with a screw, the screw operably configured to rotate, expand and contract a width separating the plurality of hinged members, and place the lifting surface at a plurality of raised height positions.
대표청구항▼
1. An expandable car jack comprising: a portable base and a vehicle lifting assembly coupled to one another, the vehicle lifting assembly having a lifting surface and operably configured, through at least one of a threaded screw-hinge configuration and pneumatic force, to place the lifting surface a
1. An expandable car jack comprising: a portable base and a vehicle lifting assembly coupled to one another, the vehicle lifting assembly having a lifting surface and operably configured, through at least one of a threaded screw-hinge configuration and pneumatic force, to place the lifting surface at a plurality of raised height positions with respect to a lower support surface, opposing the lifting surface, of the base, the base including: a first base extension member having a planar lower surface, a proximal end, a distal end, and a first member length separating the proximal and distal ends of the first base extension member;a second base extension member coupled to the first base extension member and having a planar lower surface, a proximal end, a distal end, and a second member length separating the proximal and distal ends of the second base extension member;a first position along a base expansion path with the first and second base extension members in a vertically-stacked overlapping and substantially parallel configuration with one another where the planar lower surface of the first base extension member and the planar lower surface of the second base extension member are non-coplanar with one another; anda second position along the base expansion path with the first and second base extension members in overlapping and substantially perpendicular configurations with one another where the planar lower surface of the first base extension member and the planar lower surface of the second base extension member are coplanar with one another. 2. The expandable car jack according to claim 1, further comprising: a fastener and a spring, wherein the first and second base extension members are removably, directly, and biasedly coupled together with the fastener and the spring. 3. The expandable car jack according to claim 2, wherein: the first and second base extension members are interposed between the spring and head and retaining portions of the fastener. 4. The expandable car jack according to claim 1, wherein at least one of the first base extension member and second base extension member further comprises: a recess centrally disposed and defined thereon, wherein the recess has another of the at least one of the first base extension member and second base extension member disposed therein when the base is in the second position along the base expansion path. 5. The expandable car jack according to claim 1, wherein each of the first and second base extension members further comprise: a complementary recess disposed and defined thereon, wherein each of the complementary recesses has another of the at least one of the first and second base extension members disposed therein when the base is in the second position along the base expansion path. 6. The expandable car jack according to claim 5, further comprising: a plurality of ridges disposed within the complementary recess of one of the first and second base extension members; anda plurality of inset grooves defined by another of the first and second base extension members and disposed within the complementary recess of the another of the first and second base extension members, each of the plurality of inset grooves spanning into respective shoulders restricting lateral movement of a respective one of the plurality of ridges disposed within a respective one of the plurality of inset grooves when the base is in the second position along the base expansion path. 7. The expandable car jack according to claim 6, wherein: the plurality of ridges and the plurality of inset grooves are arcuate. 8. The expandable car jack according to claim 6, wherein: the shoulders of the plurality of inset grooves are centrally disposed at opposing ends of the complementary recess of the another of the first and second base extension members. 9. The expandable car jack according to claim 6, wherein: the plurality of ridges and the plurality of inset grooves are symmetrical with respect to each other when the first and second base extension members are in the first position along the base expansion path. 10. The expandable car jack according to claim 1, further comprising: a fastener coupling the first and second base extension members together and, when in the second position along the base expansion path, defining four support segments each having equal lengths separating a distal end the respective four support segments and the fastener. 11. An expandable car jack comprising: a base with a first base extension member and a second extension member rotatably, removably, and directly coupled to one another, each of the first and second base extension members: having a planar lower surface; andoperably configured to rotate with respect to one another from a vertically-stacked overlapping and substantially parallel configuration with one another where the planar lower surface of the first base extension member and the planar lower surface of the second base extension member are non-coplanar with one another, to an overlapping and substantially perpendicular configuration with one another where the planar surface of the first base extension member and the planar surface of the second base extension member are coplanar with one another, forming an x-shape; anda plurality of hinged members supported by the base, defining a lifting surface, and coupled together with a screw, the screw operably configured to rotate, expand and contract a width separating the plurality of hinged members, and place the lifting surface at a plurality of raised height positions. 12. The expandable car jack according to claim 11, further comprising: a spring and a fastener, wherein the first and second base extension members are biasedly coupled together with the fastener and the spring. 13. An expandable car jack base comprising: a base with a first base extension member and a second base extension member rotatably, removably, biasedly, and directly coupled to one another with a fastener and a spring, at least one of the first base extension member and the second base extension member having side walls defining a recess thereon and the first and second base extension members operably configured to rotate with respect to one another about the fastener along a base expansion path to reach a locked position, forming an x-shape, with the other of the at least one of the first base extension member and the second base extension member disposed within the recess and restricted from rotational movement by at least one of the side walls of the at least one of the first base extension member and the second base extension member, each of the first and second base extension members having a planar lower surface; anda plurality of hinged members supported by the base, defining a lifting surface, and coupled together with a screw, the screw operably configured to rotate, expand and contract a width separating the plurality of hinged members, and place the lifting surface at a plurality of raised height positions, whereinthe planar lower surface of the first base extension member and the planar lower surface of the second base extension member are coplanar with one another in the locked position. 14. The expandable car jack according to claim 13, wherein: the locked position includes the first and second base extension members defining four support segments each having equal lengths separating a distal end the respective four support segments and the fastener.
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