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US 2011/0079112 A1Published application
Screwdriver with Changeable Blade
OwnerJack LINinventor
Life of this patent
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Abstract
A screwdriver includes a handle, a bit and a chuck for connecting the bit to the handle. The chuck includes a cylinder, two latches, a spring and a control element. The cylinder is securely connected to the handle. The latches are used to keep the bit connected to the cylinder, a spring for pushing the bit from the cylinder when the latches release the bit and a control element operable for causing the latches to release the bit.
Claims8
A screwdriver comprising a handle, a bit and a chuck for connecting the bit to the handle, wherein the chuck comprises:
- a cylinder securely connected to the handle and formed with a space and at least one slot including a first portion in communication with the space and a second portion separated from the space;
- at least one latch inserted through the slot of the cylinder and movable between the first and second portions of the slot of the cylinder, wherein in the first portion of the slot, the latch can be inserted in an annular groove defined in the bit;
- and
- a control element comprising a button comprising an opening for receiving the bit and two plates extending from the button and each comprising at least one slit for receiving the latch, wherein the control element is movable between a first position for pushing the latch to the first portion of the slot and a second position for pushing the latch to the second position.
1 more element
Dependencies are inferred from the claim text.