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US 7,581,468 B2Granted
Control device for angle adjustable hand tool
AssigneeProxene Tools Co., Ltd.
InventorArthur Wu
Life of this patent
Estimating the term…
Abstract
An angle adjustable hand tool includes a driving head pivotably connected to a handle and a pawl is received in the handle and removably engaged with the teeth in the driving head. A button is engaged with a hole in the handle and perpendicularly communicates with the hole in which the pawl is received. The button includes a recess and a second contact surface connects the recess. When the button is pushed, the pawl is located in the recess of the button so that the driving head can be pivoted relative to the handle. The driving head is set when the pawl is engaged with the teeth of the driving head.
Claims13
An angle adjustable hand tool comprising:
- a handle having a first connection end and a first hole defined axially in the first connection end, a second hole defined in the first connection end and perpendicularly communicating with the first hole, two respective springs received in the first and second holes respectively;
- a driving head having a driving member and a second connection end which is pivotably connected to the first connection end and includes a first engagement end having teeth defined therein;
- a pawl movably received in the first hole and having a second engagement end which is removably engaged with the teeth of the first engagement end, at least one first flat surface defined in a shank of the pawl and a first contact surface connected to the first flat surface;
- a button engaged with the second hole and including at least one second flat surface which is matched with the first flat surface of the pawl, a recess defined in the button and located substantially perpendicular to the at least one second flat surface, a second contact surface connected to the recess, when the button is pushed, the second contact surface being disengaged from the first contact surface and the pawl is then located in the recess of the button so that the driving head is pivoted and the first engagement end of the driving head moves over the second engagement end of the pawl to adjust the angle of the driving head relative to the handle, the second engagement end of the pawl is engaged with the first engagement end again when releasing the button;
- wherein a second guide surface is connected between the recess and the second contact surface;
- wherein the second guide surface is a curved and convex surface.
3 more elements
An angle adjustable hand tool comprising:
- a handle having a first connection end and a first hole defined axially in the first connection end, a second hole defined in the first connection end and perpendicularly communicating with the first hole, two respective springs received in the first and second holes respectively;
- a driving head having a driving member and a second connection end which is pivotably connected to the first connection end;
- a pin including a first engagement end having teeth defined thereon;
- a pawl movably received in the first hole and having a second engagement end which is removably engaged with the teeth of the first engagement end, at least one first flat surface defined in a shank of the pawl and a first contact surface connected to the first flat surface;
- a button engaged with the second hole and including at least one second flat surface which is matched with the first flat surface of the pawl, a recess defined in the button and located substantially perpendicular to the at least one second flat surface, a second contact surface connected to the recess, when the button is pushed, the second contact surface being disengaged from the first contact surface and the pawl is then located in the recess of the button so that the driving head is pivoted and the first engagement end of the driving head moves over the second engagement end of the pawl to adjust the angle of the driving head relative to the handle, the second engagement end of the pawl is engaged with the first engagement end again when releasing the button;
- wherein a second guide surface is connected between the recess and the second contact surface;
- wherein the second guide surface is a curved and convex surface.
4 more elements
Dependencies are inferred from the claim text.