초록 ▼

A portable automobile lift includes a plurality of portable lifting columns and a portable power unit. Each lifting column includes a column base, a post extending upwardly from the column base, a lifting carriage moveably mounted on a forward side of the post, and a hydraulic actuator connected to

A portable automobile lift includes a plurality of portable lifting columns and a portable power unit. Each lifting column includes a column base, a post extending upwardly from the column base, a lifting carriage moveably mounted on a forward side of the post, and a hydraulic actuator connected to the lifting carriage for movement of the lifting carriage along the post. Each column base comprises a respective base plate connected to a lower end of the respective post. The base plate anchor bolt receiving holes extending therethrough for receiving respective anchor bolts. Each column base further includes a pair of wheels positioned to engage a ground surface rearward of the base plate. The lift also includes a portable power unit for providing hydraulic fluid to the actuators. The power unit is mounted on a cart for easy transportation and storage.

대표청구항 ▼

1. A portable automobile lift comprising: a) a pair of unconnected lifting columns, each said lifting column including a column base, a post extending upwardly from said column base, a lifting carriage moveably mounted on a forward inward side of said post, and a hydraulic actuator connected to said

1. A portable automobile lift comprising: a) a pair of unconnected lifting columns, each said lifting column including a column base, a post extending upwardly from said column base, a lifting carriage moveably mounted on a forward inward side of said post, and a hydraulic actuator connected to said lifting carriage for movement of said lifting carriage along said post, said lifting carriage having at least one arm extending outwardly therefrom having a length sufficient to engage an undercarriage of a vehicle positioned between said inward sides of said lifting columns; andb) a power unit selectively supplying hydraulic pressure to said linear actuators and a flow divider for dividing flow from said power unit between said hydraulic actuator on each of said plurality of lifting columns; whereinc) each said column base comprises a respective base plate connected to a lower end of the respective post and having at least one edge spaced outwardly from a respective side of said post to form a mounting flange, said mounting flange having at least one anchor bolt receiving hole extending therethrough, each said column base further including a pair of wheels positioned to engage a ground surface rearward of said base plate. 2. The portable automobile lift as in claim 1 wherein each said base plate includes a front edge, a rear edge, a first side edge and a second side edge, wherein each said rear edge is said at least one edge and is spaced outwardly from a rear wall of the respective post to form said first mounting flange. 3. The portable automobile lift as in claim 2 wherein there are a plurality of said anchor bolt holes extending through said first mounting flange of each said base plate. 4. The portable automobile lift as in claim 3, wherein: a) said first side edge of each said base plate is spaced outwardly from a first side wall of the respective post to form a second mounting flange;b) said second side edge of each said base plate is spaced outwardly from a second side wall of the respective post to form a third mounting flange; andc) said second and third mounting flanges each have at least one anchor bolt receiving hole extending therethrough. 5. The portable automobile lift as in claim 4 wherein said front edge of each said base plate is spaced outwardly from a front wall of the respective post to form a fourth mounting flange. 6. The portable automobile lift as in claim 5 wherein there are no anchor bolt receiving holes in said fourth mounting flanges. 7. The portable automobile lift as in claim 1 wherein no legs extend outwardly from any one of said column bases. 8. The portable automobile lift as in claim 1 wherein each of said wheels is captured between respective inner and outer wheel plates extending rearwardly from the respective post. 9. The portable automobile lift as in claim 8 wherein said outer wheel plates are connected to respective side walls of the respective post and said inner wheel plates are connected to a rear wall of the respective post. 10. The portable automobile lift as in claim 8 wherein lower edges of said wheel plates engage an upper surface of said base plate to reinforce the connection between the respective post and the respective base plate. 11. The portable automobile lift as in claim 1 wherein said power unit is mounted on a cart for portability. 12. The portable automobile lift as in claim 11 wherein said power unit includes an AC electric motor driving a hydraulic pump and a reservoir for hydraulic fluid. 13. The portable automobile lift as in claim 1 wherein said flow divider is a rotary gear flow divider. 14. The portable automobile lift as in claim 1 in combination with: a) a concrete slab, said concrete slab having a plurality of holes bored therein, each of said holes in said slab having a respective internally threaded anchor received therein; andb) at least one anchor bolt inserted through a respective one of said at least one anchor bolt receiving holes in said mounting flange of each said lifting column, each said at least one anchor bolt being threadably received in a respective one of said anchors. 15. A portable automobile lift comprising: a) a pair of lifting columns, each said lifting column including a column base, a post extending upwardly from said base, a lifting carriage moveably mounted on said post, and a hydraulic actuator connected to said lifting carriage for movement of said lifting carriage along said post; said lifting carriage having a pair of telescoping arms pivotally connected to said lifting carriage and extending outwardly therefrom and being adjustable to a length sufficient to engage an undercarriage of a vehicle positioned between inward sides of said pair of lifting columns;b) each said column base comprising a respective base plate connected to a lower end of the respective post and having at least one edge spaced outwardly from a respective side of said post to form a mounting flange, said mounting flange having at least one anchor bolt receiving hole extending therethrough;c) a pair of wheels mounted to said column base of each said lifting column and positioned to engage a ground surface when said lifting column is tilted over said pair of wheels;d) a portable power unit selectively supplying hydraulic fluid under pressure to said hydraulic actuator of each of said lifting columns through a hydraulic hose connected between each said hydraulic actuator and said power unit; ande) a flow divider dividing the flow of hydraulic fluid from said power unit to said hydraulic actuator of each of said lifting columns through said respective hydraulic hose; said flow divider providing synchronized movement of each of said lifting carriages of said pair of lifting columns in the presence of uneven loads thereon. 16. The portable automobile lift as in claim 15 wherein each of said hydraulic hoses is connected to said respective hydraulic actuator by a quick connect coupler. 17. The portable automobile lift as in claim 15 wherein said flow divider is a rotary gear flow divider. 18. The portable automobile lift as in claim 15 wherein said base plate includes a front edge, a rear edge, a first side edge and a second side edge, wherein said rear edge is said at least one edge and is spaced outwardly from a rear wall of said post to form said first mounting flange and a plurality of said anchor bolt holes extend through said first mounting flange; and each of said wheels is mounted on an axle supported by a wheel plate connected to said post and said base plate, reinforcing the connection between said post and said base plate and supporting said wheel rearward of said first mounting flange. 19. The portable automobile lift as in claim 15 wherein each said lifting column further comprising at least one pair of aligned lock bar securement holes formed through said opposed sidewalls of said post; a lock bar insertable through said at least one pair of aligned pair of lock bar securement holes for preventing said carriage from dropping therebelow, said lift further comprising a pair of aligned lock bar storage holes extending through said sidewalls of said post proximate an upper end thereof; said lock bar having a length which is long enough that a portion of each end of said lock bar sized to be gripped by a user's hand extends past said opposed sidewalls of said post when said lock bar is positioned through said pair of aligned lock bar storage holes and said pair of aligned lock bar storage holes is positioned at a height to facilitate grasping of said lock bar when positioned therein for tilting said lift onto said wheels and for maneuvering said lift on said wheels. 20. The lift as in claim 19 wherein said lock bar has a grip on one end thereof. 21. The lift as in claim 15 wherein said lift is a medium rise lift having a lifting height of approximately forty-five inches and each of said pair of lifting columns has a maximum height of eighty nine inches. 22. The lift as in claim 15 wherein said lift is a medium rise lift wherein a maximum height of each of said lifting columns is under ninety-six inches. 23. A portable automobile lift comprising a pair of lifting columns, each lifting column comprising: a column base;a post extending upwardly from said base; said post comprising a rear wall, opposed side walls and a pair of front flanges extending inward from a respective one of said opposed side walls and defining a slot therebetween spaced forward of said rear wall;a lifting carriage having a carriage base extending through said slot between said pair of front flanges; said base having a pair of telescoping arms pivotally connected to and extending outward from said base and being adjustable to a length sufficient to engage an undercarriage of a vehicle positioned adjacent said lifting column, said base having a stub axle extending outward from each of said opposed sides of said base between said rear wall and said front flanges; said lifting carriage further comprising a glide block mounted on each stub axle and captured between said rear wall and a respective one of said front flanges; said carriage base vertically slidable on said glide blocks relative to said post;a hydraulic actuator connected to said lifting carriage for moving said lifting carriage relative to said post;said base connected to a lower end of said post and having a front edge, a rear edge, a first side edge and a second side edge, said rear edge spaced rearward from said rear wall of said post and said first and second side edges spaced outward from said opposed sidewalls of said post to form a mounting flange, said mounting flange having a plurality of anchor bolt receiving holes extending therethrough; anda pair of wheels, each said wheel mounted on an axle supported by a wheel plate connected to said post and said base plate, reinforcing the connection between said post and said base plate and supporting said wheel rearward of said rearward edge of said base and positioned to engage a ground surface when said lifting column is tilted over said pair of wheels; andsaid portable automobile lift further comprising:a portable power unit selectively supplying hydraulic fluid under pressure to said hydraulic actuator of each of said lifting columns through a hydraulic hose connected between each said hydraulic actuator and said power unit; anda flow divider dividing the flow of hydraulic fluid from said power unit to said hydraulic actuator of each of said lifting columns through said respective hydraulic hose; said flow divider providing synchronized movement of each of said lifting carriages of said pair of lifting columns in the presence of uneven loads thereon. 24. The portable automobile lift as in claim 23 wherein said flow divider is a rotary gear flow divider. 25. The portable automobile lift as in claim 23 wherein each said lifting column further comprising at least one pair of aligned lock bar securement holes formed through said opposed sidewalls of said post; a lock bar insertable through said at least one pair of aligned pair of lock bar securement holes for preventing said carriage from dropping therebelow, said lift further comprising a pair of aligned lock bar storage holes extending through said sidewalls of said post proximate an upper end thereof; said lock bar having a length which is long enough that a portion of each end of said lock bar sized to be gripped by a user's hand extends past said opposed sidewalls of said post when said lock bar is positioned through said pair of aligned lock bar storage holes and said pair of aligned lock bar storage holes is positioned at a height to facilitate grasping of said lock bar when positioned therein for tilting said lift onto said wheels and for maneuvering said lift on said wheels. 26. The lift as in claim 25 wherein said lock bar has a grip on one end thereof. 27. The lift as in claim 23 wherein said lift is a medium rise lift having a lifting height of approximately forty-five inches and each of said pair of lifting columns has a maximum height of eighty nine inches. 28. The lift as in claim 23 wherein said lift is a medium rise lift wherein a maximum height of each of said lifting columns is under ninety-six inches.