Blade changing system for rotary cutting machine
OwnerCharles G. Williamsinventor
Life of this patent
Estimating the term…
Abstract
A blade for a rotary cutting machine includes at least one polygonal shaped opening longitudinally spaced from a central portion of the blade. The polygonal shaped opening is adapted to receive a drive head of a conventional socket wrench, a standard Allen wrench, a Torx head type wrench or other similar tool. The polygonal shaped opening enables a user to generate sufficient torque to prevent the blade from being undesirably rotated while the blade is drivingly connected or disconnected from a driveshaft of the rotary cutting machine. In this fashion, the blade may be changed efficiently and effectively using standard tools.
Claims22
A rotary cutting machine comprising:
- a motor including a driveshaft;
- a blade including first and second, longitudinally spaced end portions and a central portion located longitudinally between the first and second end portions, with each of said first and second end portions having at least one sharp edge, said blade being adapted to be drivingly connected to the driveshaft at the central portion;
- and
- at least one polygonal opening formed in the blade longitudinally between said central portion and at least one of said first and second end portions, said at least one polygonal opening being sized to snugly receive a drive head of a ratchet for retaining the blade in a desired orientation through controlling of the ratchet when the blade is selectively, drivingly connected to and disconnected from the driveshaft.
A blade adapted to be drivingly connected to a driveshaft of a rotary cutting machine comprising:
- first and second, longitudinally spaced end portions, with each of said first and second end portions having at least one sharp edge;
- a central portion located longitudinally between the first and second end portions, said blade being adapted to be drivingly connected to the driveshaft at the central portion;
- and
- at least one polygonal opening formed in the blade longitudinally between said central portion and at least one of said first and second end portions, said at least one polygonal opening being sized to snugly receive a wrench for retaining the blade in a desired orientation through controlling of the wrench when the blade is selectively, drivingly connected to and disconnected from the driveshaft of the rotary cutting machine.
A rotary cutting machine comprising:
- a motor including a driveshaft;
- a blade including first and second, longitudinally spaced end portions and a central portion located longitudinally between the first and second end portions, with each of said first and second end portions having at least one sharp edge, said blade being adapted to be drivingly connected to the driveshaft at the central portion;
- and
- polygonal opening means, provided on the blade longitudinally between said central portion and at least one of said first and second end portions, for snugly receiving a portion of a wrench used to retain the blade from rotation when the blade is selectively, drivingly connected to and disconnected from the driveshaft.
Dependencies are inferred from the claim text.