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US 2006/0186613 A1Published application
Drill chuck
AssigneeBlack & Decker Inc.
InventorsDavid Campbell, Warren Ceroll, Daniel Puzio
Life of this patent
Estimating the term…
Abstract
A drill chuck with an impacting structure that may be selectively employed to drive the jaws of the chuck into further engagement with or out of engagement with a bit. The chuck is configured so as to be capable of generating relatively high torques in a loosening direction so as to ensure that the bit can be removed from the jaws of the chuck.
Claims17
A drill chuck comprising:
- a spindle that is adapted to be coupled to a source of rotational power;
- a plurality of jaw members slidably supported on the spindle;
- a threaded socket disposed about the spindle and threadably engaged with one of the jaw members and the spindle, the threaded socket including a plurality of first socket teeth and a plurality of second socket teeth that are configured differently than the first socket teeth;
- a spring disposed about the spindle;
- an impacting structure being disposed about the spindle and being biased toward the threaded socket by the spring, the impacting structure including a first set of structure teeth and a second set of structure teeth that are configured differently from the set of first structure teeth;
- and
- a changeover member disposed about the threaded socket and engaging the impacting structure, the changeover member being rotate-able between a first position, wherein the first and second socket teeth are axially spaced apart from the first and second structure teeth, and a second position, wherein the first and second socket teeth are not axially spaced apart from the first and second structure teeth;
- wherein the first socket teeth and the first structure teeth contact one another when the threaded socket is rotated in a first rotational direction relative to the impacting structure and the changeover member is disposed in the second position and wherein the second socket teeth and the second structure teeth contact one another when the threaded socket is rotated in a direction opposite the first rotational direction relative to the impacting structure and the changeover member is disposed in the second position.
5 more elements
A drill chuck comprising:
- a spindle that is adapted to be coupled to a source of rotational power;
- a plurality of jaw members slidably supported on the spindle;
- a threaded socket disposed about the spindle and threadably engaged with one of the jaw members and the spindle, the threaded socket including a plurality of first teeth;
- a spring disposed about the spindle;
- an impacting structure having a plurality of second teeth, the impacting structure being disposed about the spindle and being biased toward the threaded socket by the spring;
- and
- a changeover member disposed about the threaded socket and engaging the impacting structure, the changeover member being rotate-able between a first position, wherein the first and second teeth are axially spaced apart from one another, and a second position, wherein the first and second teeth are not axially spaced apart from one another so that the first and second teeth contact one another when the threaded socket is rotated relative to the impacting structure;
- wherein each of the first and second teeth have a tightening side, which contact one another to apply a force to the threaded collar in a direction that tends to rotate the threaded collar so as to slide the jaws toward a rotatary axis of the spindle, wherein each of the first and second teeth also have a loosening side, which contact one another to apply a force to the threaded collar in a direction that tends to rotate the threaded collar so as to slide the jaws away from the rotary axis of the spindle, wherein the tightening side and the loosening side of at least one of the first and second teeth are differently configured so that the impacting structure and the threaded collar cooperate to generate relatively more torque in a reversing direction.
5 more elements
A drill chuck comprising:
- a spindle that is adapted to be coupled to a source of rotational power;
- a plurality of jaw members slidably supported on the spindle;
- a threaded socket disposed about the spindle and threadably engaged with one of the jaw members and the spindle, the threaded socket including a plurality of first teeth;
- a spring disposed about the spindle;
- an impacting structure having a plurality of second teeth, the impacting structure being disposed about the spindle and being biased toward the threaded socket by the spring;
- a changeover member disposed about the threaded socket and engaging the impacting structure, the changeover member being rotate-able between a first position, wherein the first and second teeth are axially spaced apart from one another, and a second position, wherein the first and second teeth are not axially spaced apart from one another so that the first and second teeth contact one another when the threaded socket is rotated relative to the impacting structure;
- and
- at least one resilient element that is configured to absorb a portion of a force transmitted to the impacting structure when the first and second teeth contact one another only when the threaded collar is driven in a rotational direction that is associated with sliding of the jaws toward a rotatary axis of the spindle.
5 more elements
A drill chuck comprising:
- a spindle that is adapted to be coupled to a source of rotational power;
- a plurality of jaw members slidably supported on the spindle;
- a threaded socket disposed about the spindle and threadably engaged with one of the jaw members and the spindle, the threaded socket including a plurality of first teeth;
- a spring disposed about the spindle;
- a joint member disposed about the spindle and abutting a first side of the spring;
- an impacting structure having a plurality of second teeth, the impacting structure being disposed about the spindle and being biased toward the threaded socket by the spring;
- a changeover member disposed about the threaded socket and engaging the impacting structure, the changeover member being rotate-able between a first position, wherein the first and second teeth are axially spaced apart from one another, and a second position, wherein the first and second teeth are not axially spaced apart from one another so that the first and second teeth contact one another when the threaded socket is rotated relative to the impacting structure;
- a housing member into which the impacting structure is disposed, the housing member including a plurality of axially extending grooves that limit rotation of the impacting structure while permitting the impacting structure to travel in an axial direction;
- and
- an adjustment collar coupled to the joint member and operable for selectively axially positioning the joint member relative to the housing member so as to adjust a force that is exerted onto the impacting structure by the spring.
7 more elements
Dependencies are inferred from the claim text.