Hex wrench having greater strength
OwnerLiang-Hui LINinventor
Life of this patent
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Abstract
A hex wrench includes a handle with a first twist portion having a substantially helical profile through an entire length thereof, a head with a second twist portion having a substantially helical profile through an entire length thereof, and a curved transition portion connected between the handle and the head. A first mounting portion which is a regular hexagonal prism and non-twisted extends integrally from the handle, and a second mounting portion which is a regular hexagonal prism and non-twisted extends integrally from the head. As such, the hex wrench has greater strength and stiffness without reducing its malleability so as to prevent the hex wrench from being cracked or broken due to an excessive applying force.
Claims8
A hex wrench, comprising:
- an elongated body portion, having a handle, a head, a curved transition portion and six side faces around a longitudinal axis of the hex wrench, the handle and the head integrally connected respectively to two ends of the curved transition portion, the six side faces each continuously extending through an entire length of the elongated body portion;
- a first mounting portion, extending integrally from one end of the handle, the first mounting portion being a regular hexagonal prism and having six first faces around the longitudinal axis, the six first faces being non-twisted about the longitudinal axis;
- and
- a second mounting portion, extending integrally from one end of the head, the second mounting portion being a regular hexagonal prism and having six second faces around the longitudinal axis, the six second faces being non-twisted about the longitudinal axis;
- wherein the handle includes a first twist portion having a substantially helical profile through an entire length thereof;
- wherein the head includes a second twist portion having a substantially helical profile through an entire length thereof;
- wherein either of the first and second mounting portions is to be fitted in a regular hexagonal hole of a fastener.
Dependencies are inferred from the claim text.