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US 11,535,501 B2Granted
Lifting and support apparatus
AssigneeNone recorded
InventorStephen J. Knight, III
Life of this patent
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AssigneeNone recorded
InventorStephen J. Knight, III
Estimating the term…
A lifting and support apparatus having a fully lowered position, a fully extended position and many transitional positions. The lifting and support apparatus includes a base portion with a first leg, a second leg, a third leg and a fourth leg hingedly attached thereto and extending therefrom. The apparatus can also include a first lateral support element that the first and second legs are extending toward and hingedly connected to and a second lateral support element that the third and fourth legs are extending toward and hingedly connected to. The apparatus further includes a lift support portion that has a fifth leg, a sixth leg, a seventh leg and an eighth leg hingedly connected thereto and extending therefrom, the fifth and sixth legs extending to and hingedly connected to the first lateral support element and the seventh and eighth legs extending to and hingedly connected to the second lateral support element. In addition, the apparatus has a drive apparatus and threaded shaft for forcing the first lateral support element and the second lateral support element toward and away from each other, which raises and lowers the lift support portion of the lifting apparatus relative to the base portion. A method of raising or supporting an object with a lifting and support apparatus. The method includes placing the lifting and support apparatus in a desired position relative to the object to be raised and supported. The method also includes actuating the lifting and support apparatus to raise the object to a desired height.
A lifting and support apparatus having a fully lowered position, a fully extended position and many transitional positions, the lifting and support apparatus comprising:
A method of raising or supporting an object with a lifting and support apparatus, the method comprises:
A lifting and support apparatus having a fully lowered position, a fully extended position and many transitional positions, the lifting and support apparatus comprising:
A method of raising or supporting an object with a lifting and support apparatus, the method comprises:
Dependencies are inferred from the claim text.
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Scissor linkages, i.e. X-configuration: multiple scissor linkages vertically arranged
Devices, e.g. jacks, adapted for uninterrupted lifting of loads: lazy-tongs mechanisms
With platforms supported by levers for vertical movement: driven by screw or spindle
Hoisting, lifting, hauling or pushing, not otherwise provided for
About 15 years 2 months of term left · ends 7 Jan 2042 (estimated)
Not applicable.
The present disclosure relates to a lifting and support apparatus for raising, lowering, and supporting various objects to a desirable height without including any sliding elements for its operation.
It is typical for a scissor jack to consist of a single set of opposing linked arms, connected in the center of a base, forming a parallelogram aligned in a planar configuration with a horizontal screw used for adjustment. This configuration lacks stability when a force is applied to the jack. Other scissor-lift lifting and support apparatuses consist of multiple spaced apart parallelograms in order to provide more stability but they typically include some sliding elements to facilitate the raising and lowering of objects to a certain height. These sliding elements inevitably create failure points for the lifting apparatus.
FIG. 1 is a perspective view of a lifting apparatus in a fully extended position constructed in accordance with the present disclosure.
FIG. 2A is another perspective view of the lifting apparatus in the fully extended position constructed in accordance with the present disclosure
FIG. 2B is another perspective view of a portion of the lifting apparatus in the fully extended position constructed in accordance with the present disclosure.
Referring now to FIGS. 1-6, shown therein is a lifting apparatus 10 for raising, lowering, and supporting objects at a desired height. The apparatus 10 includes a base portion 12, a first lateral support element 14, a second lateral support element 16 and a lift support portion 18. The base portion 12 provides the lifting apparatus 10 a steady base to support the lifting apparatus 10. The lift support portion 18 engages and supports whatever object is desired to be lifted and/or supported by the lifting apparatus 10. The lift support portion 18 can have any shape to enable desired engagement with objects to be lifted/supported and so that the lifting apparatus 10 can still operate as described herein. In one embodiment of the present disclosure, the lift support portion 18 can be a platform.
The lifting apparatus 10 includes a first leg 20 and a second leg 22 hingedly supported by a first side 24 (or first edge) of the base portion 12. The base portion 12 includes a second side 26 (or second edge), third side 28 (or third edge) and a fourth side 30 (or fourth edge). The first and second legs 20 and 22 extend from the first side 24 of the base portion 12 to the first lateral support element 14. More specifically, a first end 32 of the first leg 20 can extend from the first side 24 of the base portion 12 close to the second side 26 of the base portion 12. Similarly, a first end 34 of the second leg 22 can extend from the first side 24 of the base portion 12 close to the third side 28 of the base portion 12. A second end 36 of the first leg 20 hingedly engages a first end 38 of the first lateral support element 14 and a second end 40 of the second leg 22 hingedly engages with a second end 42 of the first lateral support element 14.
The lifting apparatus 10 includes a third leg 44 and a fourth leg 46 hingedly supported by the fourth side 30 of the base portion 12. The third and fourth legs 44 and 46 extend from the fourth side 30 of the base portion 12 to the second lateral support element 16. More specifically, a first end 48 of the third leg 44 can extend from the fourth side 30 of the base portion 12 and be positioned laterally inside of the first leg 20 of the lifting apparatus 10. Similarly, a first end 50 of the fourth leg 46 can extend from the fourth side 30 of the base portion 12 that is positioned laterally inside of the second leg 22 of the lifting apparatus 10. A second end 52 of the third leg 44 hingedly engages a first end 54 of the second lateral support element 16 and a second end 56 of the fourth leg 46 hingedly engages with a second end 58 of the second lateral support element 16.