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1. WO2020117805 - WEIGHT PLATE WITH LIFTING FLANGES

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[ EN ]

WHAT IS CLAIMED IS:

1. A weightlifting apparatus comprising:

a weight plate having a first side and an opposed second side;

a central aperture extending through the weight plate from the first side to the second side;

a pair of first slots extending through the weight plate from the first side to the second side, wherein the central aperture is positioned between the first slots;

a first inner flange extending radially outwardly from an inner wall of each first slot on the first side of the weight plate;

a first outer flange extending radially inwardly from an outer wall of each first slot on the second side of the weight plate; and

a pair of second slots extending through the weight plate from the first side to the second side, wherein the central aperture is positioned between the second slots;

a second inner flange extending radially outwardly from an inner wall of each second slot on the second side of the weight plate; and

a second outer flange extending radially inwardly from an outer wall of each second slot on the first side of the weight plate.

2. The weightlifting apparatus of claim 1, wherein the first and second pairs of opposed slots are positioned radially outwardly of the central aperture.

3. The weightlifting apparatus of claim 1, wherein the first inner flanges of the first slots and the second outer flanges of the second slots are flush with at least a portion of the first side of the weight plate.

4. The weightlifting apparatus of claim 1, wherein the first outer flanges of the first slots and the second inner flanges of the second slots are flush with at least a portion of the second side of the weight plate.

5. The weightlifting apparatus of claim 1, wherein the first and second slots are arcuate slots, such that the inner and outer walls of the first slots are arcuate, and the inner and outer walls of the second slots are arcuate.

6. The weightlifting apparatus of claim 5, wherein the first and second flanges of each of the first and second slots are arcuate flanges extending along the arcuate slots.

7. The weightlifting apparatus of claim 1, wherein ends of each of the first and second slots extend radially along the weight plate.

8. The weightlifting apparatus of claim 1, wherein the first slots are offset 90° from the second slots with respect to the central aperture.

9. The weightlifting apparatus of claim 1, further comprising an insert received in the central aperture, wherein the insert includes an insert aperture extending therethrough.

10. The weightlifting apparatus of claim 9, wherein the weight plate is formed at least partially of one of urethane and rubber, and the insert is formed of metal.

11. The weightlifting apparatus of claim 1, wherein the weight plate has a circular outer periphery.

12. The weightlifting apparatus of claim 1, wherein the weight plate has a polygonal outer periphery with a plurality of sides.

13. The weightlifting apparatus of claim 1, further comprising a bevel at a radially outer peripheral edge of each of the first side and the second side.

14. The weightlifting apparatus of claim 1, wherein the weight plate comprises an inner core and an outer coating surrounding the inner core.

15. The weightlifting apparatus of claim 14, wherein the inner core is formed of cast iron and the outer coating is formed of polyurethane.

16. The weightlifting apparatus of claim 1, wherein the inner walls of the first slots are sloped with respect to the first and second sides to extend radially outward and axially from the second side to the first inner flanges, and the inner walls of the second slots are sloped with respect to the first and second sides to extend radially outward and axially from the first side to the second inner flanges.

17. The weightlifting apparatus of claim 16, wherein the outer walls of the first slots are sloped with respect to the first and second sides to extend radially inward and axially from the first side to the first outer flanges, and the outer walls of the second slots are sloped with respect to the first and second sides to extend radially inward and axially from the second side to the second outer flanges.

18. The weightlifting apparatus of claim 1, wherein the first inner flange, the second inner flange, the first outer flange, and the second outer flange are rounded over where they meet the first side and where they meet the second side.

19. A weightlifting apparatus comprising:

a weight plate having an outer coating formed at least partially of one of urethane and rubber and having a first side and an opposed second side;

a central aperture extending through the weight plate from the first side to the second side;

a metal insert received in the central aperture and having an insert aperture extending therethrough;

a pair of first slots extending through the weight plate from the first side to the second side, wherein the central aperture is positioned between the first slots, and the first slots are symmetrical with respect to the central aperture;

a first inner flange extending radially outwardly from an inner wall of each first slot on the first side of the weight plate;

a first outer flange extending radially inwardly from an outer wall of each first slot on the second side of the weight plate; and

a pair of second slots extending through the weight plate from the first side to the second side, wherein the central aperture is positioned between the second slots, and the second slots are symmetrical with respect to the central aperture;

a second inner flange extending radially outwardly from an inner wall of each second slot on the second side of the weight plate; and

a second outer flange extending radially inwardly from an outer wall of each second slot on the first side of the weight plate.

20. The weightlifting apparatus of claim 19, wherein the weight plate has an annular outer section forming an outer periphery of the weight plate, an annular inner section surrounding the central aperture, and an annular middle section extending radially between the inner and outer sections, wherein the inner section and the outer section have greater axial thicknesses than the middle section, such that the outer, middle, and inner sections are defined by transitions in axial thickness.

21. The weightlifting apparatus of claim 20, wherein the pair of first slots, the pair of second slots, the first and second inner flanges, and the first and second outer flanges are positioned in the middle section.

22. A weightlifting apparatus comprising:

a weight plate having a first side and an opposed second side, the weight plate having an annular outer section forming an outer periphery of the weight plate, an annular inner section surrounding the central aperture, and an annular middle section extending radially between the inner and outer sections, wherein the inner section and the outer section have greater axial thicknesses than the middle section, such that the outer, middle, and inner sections are defined by transitions in axial thickness;

a central aperture extending through the weight plate from the first side to the second side;

a pair of first slots extending through the middle section of the weight plate from the first side to the second side, each of the first slots having an inner wall and an outer wall that are arcuately shaped, wherein the central aperture is positioned between the first slots, and the first slots are symmetrical with respect to the central aperture;

a first inner flange extending radially outwardly from the inner wall of each first slot on the first side of the weight plate, wherein the inner walls of the first slots are sloped with respect to the first and second sides to extend radially outward and axially from the second side to the first inner flanges;

a first outer flange extending radially inwardly from the outer wall of each first slot on the second side of the weight plate, wherein the outer walls of the first slots are sloped with respect to the first and second sides to extend radially inward and axially from the first side to the first outer flanges; and

a pair of second slots extending through the middle section of the weight plate from the first side to the second side, each of the first slots having an inner wall and an outer wall that are arcuately shaped, wherein the central aperture is positioned between the second slots, and the second slots are symmetrical with respect to the central aperture;

a second inner flange extending radially outwardly from the inner wall of each second slot on the second side of the weight plate, wherein the inner walls of the second slots are sloped with respect to the first and second sides to extend radially outward and axially from the first side to the second inner flanges; and

a second outer flange extending radially inwardly from the outer wall of each second slot on the first side of the weight plate, wherein the outer walls of the second slots are sloped with respect to the first and second sides to extend radially inward and axially from the second side to the second outer flanges.