System for rapidly stopping a spinning table saw blade
AssigneeBlack & Decker Inc.
InventorDavid V. Keller
Life of this patent
Estimating the term…
Abstract
A system for stopping a spinning table saw blade is comprised of a pin assembly disposed adjacent to a saw blade assembly for stopping a spinning saw blade. A receiving block is disposed on a side of the saw blade opposing the pin assembly for receiving the tip of the pin assembly. A driving assembly is coupled to the pin assembly for driving the pin assembly into the spinning saw blade into the receiving block. Finally, a sensing assembly is coupled to at least one of the saw blade assembly and the driving assembly for sensing encroachment of a user's hand in a pre-defined zone. In use, upon sensing a user's hand the sensing assembly signals the driving assembly to stop the spinning saw blade by driving the pin assembly through the saw blade and into the receiving block.
Claims11
A system for stopping a spinning saw blade, comprising:
- a pin assembly disposed adjacent to a saw blade assembly for stopping the spinning saw blade, the pin assembly including a first end, the first end including a pointed tip for piercing the saw blade;
- a receiving block disposed on a side of the saw blade opposing the pin assembly for receiving the tip of the pin assembly;
- a driving assembly coupled to the pin assembly for driving the pin assembly into the spinning saw blade and into the receiving block;
- and
- a sensing assembly coupled to at least one of the saw blade assembly and the driving assembly for sensing encroachment of a user's hand in a pre-defined zone,
- wherein upon sensing a user's hand the sensing assembly signals the driving assembly to stop the spinning saw blade by driving the pin assembly through the saw blade and into the receiving block.
A saw, comprising:
- a pin assembly disposed adjacent to a saw blade assembly, the saw blade assembly being configured for receiving a saw blade, the pin assembly including a first end, the first end including a pointed tip for piercing the saw blade;
- a receiving block disposed on a side of the saw blade opposing the pin assembly for receiving the tip of the pin assembly;
- a driving assembly coupled to the pin assembly for driving the pin assembly into the saw blade and into the receiving block;
- and
- a sensing assembly coupled to at least one of the saw blade assembly and the driving assembly for sensing encroachment of a user's hand in a pre-defined zone,
- wherein upon sensing a user's hand the sensing assembly signals the driving assembly to stop the saw blade by driving the tip of the pin assembly through the saw blade and into the receiving block.
Dependencies are inferred from the claim text.