Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth and ratcheting tools with such ratchet wheel
OwnerBobby Huinventor
Life of this patent
Estimating the term…
Abstract
A ratchet wheel includes an inner periphery and an outer periphery. The outer periphery includes a number of arcuate concave teeth each having two sides and an intersection of the two sides. The ratchet wheel includes a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions, thereby forming asymmetric arcuate concave teeth to provide improved structural strength and improved torque. In another embodiment, the concave teeth are non-arcuate to reduce the formation time for the teeth, thereby reducing the production cost.
Claims20
A ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of asymmetric arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions.
A ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of asymmetric non-arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions.
A ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of symmetric non-arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two equal portions.
A ratcheting tool comprising:
- a handle and an end connected to the handle, the end including a hole, a compartment being defined in an area between the handle and the end;
- a ratchet wheel rotatably mounted in the hole of the end, the ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of asymmetric arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions;
- a pawl slidably mounted in the compartment and engaged with the ratchet wheel, the pawl comprising a plurality of teeth corresponding to the asymmetric arcuate concave teeth of the ratchet wheel;
- and
- means for biasing the pawl toward a wall defining the compartment.
A ratcheting tool comprising:
- a handle and an end connected to the handle, the end including a hole, a compartment being defined in an area between the handle and the end;
- a ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of asymmetric non-arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two unequal portions;
- a pawl slidably mounted in the compartment and engaged with the ratchet wheel, the pawl comprising a plurality of teeth corresponding to the asymmetric non-arcuate concave teeth of the ratchet wheel;
- and
- means for biasing the pawl toward a wall defining the compartment.
A ratcheting tool comprising:
- a handle and an end connected to the handle, the end including a hole, a compartment being defined in an area between the handle and the end;
- a ratchet wheel comprising an inner periphery and an outer periphery, the outer periphery including a plurality of symmetric non-arcuate concave teeth each having two sides and an intersection of the two sides, the ratchet wheel including a center, a line from the center to the intersection dividing an angle between the two sides into two equal portions;
- a pawl slidably mounted in the compartment and engaged with the ratchet wheel, the pawl comprising a plurality of teeth corresponding to the symmetric non-arcuate concave teeth of the ratchet wheel;
- and
- means for biasing the pawl toward a wall defining the compartment.
Dependencies are inferred from the claim text.