Claims
- 1. In a lawn mower having a shaft driven by an engine and a mower blade affixed by a bolt to the shaft, the shaft having a diameter, the mower blade having a bottom surface, the improvement of a blade bell support,
- said blade bell support having a length, said length of said blade bell support being greater than the diameter of the shaft, said blade bell support being located between the bolt and the blade, said blade bell support contacting the bottom surface of the mower blade, and said blade bell support cooperating with the bottom surface of the mower blade to support the blade spaced outwards of the shaft.
- 2. The blade bell support of claim 1 characterized in that said blade bell support has ends of said length of said blade bell support and said ends cooperating with the bottom surface of the blade to support same.
- 3. The blade bell support of claim 1 wherein the blade has an upper surface and characterized by the addition of an adaptor, means to connect said adaptor to the shaft,
- said adaptor having a length greater than the diameter of the shaft, and said blade bell support pressing the upper surface of the blade against said adaptor.
- 4. The blade bell support of claim 2 wherein the bolt is tightened in respect to the shaft and characterized in that said blade bell support has a center section, said center section being recessed in respect to said ends of said length of said blade bell support, and the tightening of the bolt to the shaft flexing said blade bell support.
- 5. In a lawn mower having a mower blade with a longitudinal axis and a bottom surface, a shaft driven by an engine, an adaptor fixedly attached to the shaft, the adaptor having a bottom surface having a length with the mower blade affixed thereto by a bolt,
- the improvement of means to locate the blade to the adaptor with the blade's longitudinal axis in line with the length of the adaptor,
- a blade bell support, said blade bell support having a length, said length of said blade bell support being substantially equal to the length of the adaptor, said blade bell support being located between the bolt and the blade adjacent to the bottom surface of such blade, and said blade bell support contacting the bottom surface of the blade substantially at same length as the ends of the adaptor.
- 6. The improvement of claim 5 characterized in that the contact between the bottom surface of the blade bell support and the bottom surface of the blade being slightly inwards of the ends of the adaptor.
- 7. The improvement of claim 5 characterized in that said ends of said blade bell support include support surfaces, and said support surfaces being flattened areas for contacting the bottom surface of the blade, said flattened areas being the uppermost parts of said blade bell support.
- 8. The improvement of claim 7 characterized by the addition of indexing bumps, said indexing bumps being in said support surfaces,
- holes, said holes being in the blade, and said indexing bumps being in said holes to locate said blade bell support in respect to the blade.
- 9. The improvement of claim 7 characterized in that said support surfaces include edges and said edges being downwardly radiused away from the blade.
- 10. The improvement of claim 8 characterized in that said support surfaces include edges and said edges being downwardly radiused away from the blade.
- 11. The improvement of claim 7 characterized by the addition of a center section, said center section being between said support surfaces, and said center section being spaced from the blade.
- 12. In a lawn mower having a mower blade with a longitudinal axis, a shaft driven by an engine, an adaptor fixedly attached thereto having a bottom surface with longitudinal ends and a length, the mower blade affixed to the adaptor by a bolt, the blade having a bottom surface,
- the improvement of means to locate the blade to the adaptor with the longitudinal axis of the blade aligned with the longitudinal axis of the adaptor,
- a blade bell support, said blade bell support having two end support surfaces separated by a center section, indexing bumps, said indexing bumps being located in said support surfaces, the blade having indexing holes, and
- said blade bell support being located between the bolt and the blade with said indexing bumps in said indexing holes in the blade with said support surfaces engaging the bottom surface of the blade.
- 13. The improvement of claim 12 characterized in that said support surfaces include edges and said edges being downwardly radiused away from the blade.
- 14. The blade bell support of claim 1 characterized by the addition of a mechanical interconnection means to transfer torque from the shaft to the blade and to correctly align the blade to such shaft.
- 15. The blade bell support of claim 14 characterized in that said mechanical interconnection means includes teeth.
- 16. The blade bell support of claim 15 wherein the mower blade has a longitudinal axis and characterized in that said teeth are symmetrically aligned with the longitudinal axis of the mower blade.
- 17. The blade bell support of claim 1 characterized by said blade bell support having ends and indexing means at said ends to prevent rotation of said blade bell support in respect to the blade.
- 18. The blade bell support of claim 5 characterized by the addition of a mechanical interconnection means to transfer torque from the adaptor to the blade and to correctly align the blade to such adaptor.
- 19. The blade bell support of claim 18 characterized in that said mechanical interconnection means includes teeth.
- 20. The blade bell support of claim 19 wherein the mower blade has a longitudinal axis and characterized in that said teeth are symmetrically aligned with the longitudinal axis of the mower blade.
- 21. In a lawn mower having a mower blade with a longitudinal axis, a shaft driven by an engine, an adaptor fixedly attached thereto having a bottom surface with longitudinal ends and a length, the mower blade affixed to the adaptor by a bolt, the blade having a bottom surface,
- the improvement of mechanical interconnection means to locate the blade to the adaptor with the longitudinal axis of the blade aligned with the longitudinal axis of the adaptor and to transfer torque therebetween,
- a blade bell support, said blade bell support having two substantially flattened end support surfaces separated by a center section, said two end support surfaces being spaced uppermost in respect to said center section, indexing bumps, said indexing pumps being located in said support surfaces, the blade having indexing holes, and
- said blade bell support being located between the bolt and the blade with said indexing bumps in said indexing holes in the blade with said support surfaces engaging the bottom surface of the blade.
- 22. The improvement of claim 21 characterized in that said support surfaces include edges and said edges being radiused downwardly of said support surfaces.
- 23. The blade bell support of claim 21 characterized in that said mechanical interconnection means includes teeth.
- 24. The blade bell support of claim 23 wherein the mower blade has a longitudinal axis and characterized in that said teeth are symmetrically aligned with the longitudinal axis of the mower blade.
- 25. The improvement of claim 21 characterized in that said support surfaces have a center and said indexing bumps being in said center of said support surfaces respectively.
Parent Case Info
This is a divisional application of U.S. Ser. No. 08/130,713 filed Oct. 4, 1993, Mowing Blade With Star, Gerhard Plamper, Inventor.
US Referenced Citations (2)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0315602 |
May 1989 |
EPX |
2707248 |
Aug 1978 |
DEX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
130713 |
Oct 1993 |
|