One-way wrench
AssigneeTerence Chen
InventorHsiu-Ching Huang
Life of this patent
Estimating the term…
Abstract
A one-way wrench includes a head, biasing means, a pawl and a gear. The head defines a circular space, a crescent space communicated with the circular space and a hole communicated with the crescent space. The biasing means includes a first spring and a weaker and longer second spring. The springs both include a first end put in the hole and a second end put in the crescent space. The pawl is movably put in the crescent space and includes an end abutted against the second end of the second spring and a toothed side. The gear is rotationally put in the circular space and includes a toothed periphery for engagement with the toothed side of the pawl.
Claims20
A one-way wrench including:
- a head defining a circular space, a crescent space communicated with the circular space and a hole communicated with the crescent space;
- biasing means including a first spring and a weaker and longer second spring, wherein the springs both include a first end put in the hole and a second end put in the crescent space;
- a pawl being movably put in the crescent space and including an end abutted against the second end of the second spring and a toothed side;
- and
- a gear being rotationally put in the circular space and including a toothed periphery for engagement with the toothed side of the pawl.
A one-way wrench including:
- a head defining a circular space, a crescent sp ace communicated with the circular space and a hole communicated with the crescent space;
- biasing means including a first spring and a weaker second spring, wherein the first spring includes a first end put in the hole and a second end, and the second spring includes a first end connected with the second end of the first spring and a second end put in the crescent space;
- a pawl being movably put in the crescent space and including an end abutted against the second end of the second spring and a toothed side;
- and
- a gear being rotationally put in the circular space and including a toothed periphery for engagement with the toothed side of the pawl.
A one-way wrench including:
- a head defining a circular space, a crescent space communicated with the circular space and a hole communicated with the crescent space;
- biasing means including a spring and a sleeve in which the spring is put, wherein the spring and the sleeve both include an end put in the hole and a second end put in the crescent space;
- a pawl being movably put in the crescent space and including an end abutted against the second end of the spring and a toothed side;
- and
- a gear being rotationally put in the circular space and including a toothed periphery for engagement with the toothed side of the pawl.
Dependencies are inferred from the claim text.