Light weight jack stand
The present invention relates to a jack stand. The jack stand includes a base. A post, including composite material, extends from the base. The jack stand also includes a top for topping the post and for engaging with a load. Advantageously, the post may be lightweight (typically less than 12 kg) enabling the jack stand to be conveniently moved by a single person without exposing the person to significant risk of injury. The jack stand may be moved as a whole, or in parts.
1. A jack stand including:
a base;
a pultruded post including composite material and for extending from the base, the composite material including wound reinforcing fibers to improve compressive strength, the reinforcing fibers being separately wound in both clock-wise and anticlockwise directions along the pultruded post to further improve compressive strength; and
a top for topping the pultruded post and for engaging with a load, wherein the composite material includes a matting that aligns the fibers in orientations other than longitudinally along the pultruded post to improve compressive strength.
2. The jack stand as claimed in claim 1 , wherein the pultruded post is less than 12 kg enabling the jack stand to be conveniently moved by a single person without exposing the single person to significant risk of injury.
3. The jack stand as claimed in claim 1 , wherein the composite material includes polymeric resin material and fibers.
4. The jack stand as claimed in claim 3 , wherein the fibers include any one or more of glass fibers, carbon fibers, and aramid fibers.
5. The jack stand as claimed in claim 1 , wherein the pultruded post is rated up to at least 12 tonne or 30 tonne.
6. The jack stand as claimed in claim 1 , wherein the pultruded post has a single wall or two or more walls that are bonded together.
7. The jack stand as claimed in claim 1 , wherein the pultruded post includes a curved wall and a quadrilateral wall.
8. The jack stand as claimed in claim 1 , wherein the base is wider than the pultruded post to distribute weight of the load and/or wherein the base defines a receptacle for receiving the pultruded post.
9. The jack stand as claimed in claim 8 , wherein the receptacle includes an outer wall and an inner wall of different shape and for forming a complementary fit with the pultruded post.
10. A jack stand as claimed in claim 8 , wherein the base further includes one or more strengthening fillets extending between the receptacle and a plate.
11. The jack stand as claimed in claim 1 , wherein the top defines a receptacle for receiving the pultruded post and/or wherein the top defines a cradle for cradling and contacting the load.
12. A jack stand assembly including:
at least one jack stand as claimed in claim 1 ;
at least one upright extending from a respective jack stand; and
an accessory supported by the upright.
13. The jack stand assembly as claimed in claim 12 , wherein the upright is length adjustable.
14. The jack stand assembly as claimed in claim 12 , wherein the upright is received in the jack stand.
15. The jack stand assembly as claimed in claim 12 , further including a fastening arrangement for fastening the upright to the base of the stand, the fastening arrangement including a retainer for inserting into the base.
16. The jack stand assembly as claimed in claim 12 , including a rotation inhibitor including a pin passing through each stand and upright for inhibiting rotation of the upright relative to the stand.
17. A pultruded jack stand post including composite material, the composite material including wound reinforcing fibers to improve compressive strength, the reinforcing fibers being separately wound in both clock-wise and anticlockwise directions along the pultruded jack stand post to further improve compressive strength, wherein the composite material includes a matting that aligns the fibers in orientations other than longitudinally along the pultruded jack stand post to improve compressive strength.
18. A jack stand including:
a base;
a pultruded post including composite material and for extending from the base, the composite material including wound reinforcing fibers to improve compressive strength, the reinforcing fibers being separately wound in both clock-wise and anticlockwise directions along the pultruded post to further improve compressive strength; and
a top for topping the pultruded post and for engaging with a load, wherein the pultruded post is less than 12 kg enabling the jack stand to be conveniently moved by a single person without exposing the single person to significant risk of injury.