Conical jack stands
OwnerRobert Douglas Audetinventor
Life of this patent
Estimating the term…
Abstract
Conical jack stands that are used to hold up a motor vehicle (or other object) after it has been raised (e.g., by jacks). Rather than having legs like conventional jack stands, they have the shape of a hollow cone, with a circular bottom edge. The circular bottom edge gives them a larger bottom surface area than the bottom ends of the legs of conventional jack stands, so that they will be less likely to sink into the ground or asphalt. There is a hole with internal screw threads in the top of each cone, into which a large bolt-like contacting member is screwed. The contacting members can be rotated to adjust the height of the jack stands. Their hollow conical shape makes it easy to stack the jack stands for storage. Four jack stands are stored in a square box, with one contacting member in each corner of the box.
Claims20
A conical jack stand, comprising:
- a hollow main body having a conical shape with a circular bottom edge, and a part having a hole with internal screw threads at the top of the main body, said hollow main body having no other parts;
- and
- a threaded contacting member that can be screwed into the hole at the top of the main body, with the contacting member having a cylindrical head and a cylindrical shaft with external screw threads that engage the internal screw threads in the hole at the top of the main body, said contacting member having no other parts, and being readily removable from the hollow main body.
A combination of conical jack stands and a box, comprising:
- jack stands, each having a hollow main body having a conical shape with a circular bottom edge, and a part having a hole with internal screw threads at the top of the main body, with each main body having external and internal surfaces so configured that a plurality of main bodies can be stacked in a stable column, said main bodies having no other parts;
- a threaded contacting members that can be screwed into the holes at the tops of the main bodies of the jack stands, with the contacting members each having a cylindrical head and a cylindrical shaft with external screw threads that engage the internal screw threads in the hole at the top of the main bodies˜said contacting members having no other parts, and being readily removable from the hollow main body;
- and
- a square box, suitably dimensioned and configured that the main bodies of the jack stands may be stacked in the center of the box, with the contacting members in corners of the box.
A method of holding up a heavy object, comprising the steps of:
- raising the object;
- placing one or more jack stands under the object, with each of the jack stands having a hollow main body with a conical shape and a circular bottom edge, a part having a hole with internal screw threads at the top of the main body, said hollow main body having no other parts,
- and a threaded contacting member screwed into the hole at the top of the main body, with the contacting member having a cylindrical head and a cylindrical shaft with external screw threads that engage the internal screw threads in the hole at the top of the main body, said contacting member having no other parts, and being readily removable from the hollow main body;
- and
- rotating the contacting member in a direction that causes its shaft to rise in the hole at the top of the main body, until a top surface of the head of the contacting member touches a bottom surface of the object.
Dependencies are inferred from the claim text.