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A fastener driving tool with an improved nose chamber guide member is provided for driving fasteners of at least two different lengths. Multiple fasteners in a magazine are guided toward a driving bore to be driven by a driver blade. A nosepiece defines a passageway of the fasteners. The guide membe

A fastener driving tool with an improved nose chamber guide member is provided for driving fasteners of at least two different lengths. Multiple fasteners in a magazine are guided toward a driving bore to be driven by a driver blade. A nosepiece defines a passageway of the fasteners. The guide member is operatively connected to the nosepiece and is configured for transitioning between a first position and a second position relative to the nosepiece in a direction transverse to an operational flow direction of the fasteners. In the first position, the guide member is disposed to align with the driving bore for allowing driving of the fasteners having a first length. In the second position, the guide member is disposed out of alignment with respect to the driving bore for allowing driving of the fasteners having a second length, which is longer than the first length.

대표청구항 ▼

1. A fastener driving tool for driving fasteners of a first length and a second longer length as the fasteners are guided in a magazine toward a driving bore to be driven by a driver blade, the fastener driving tool comprising: a nosepiece defining a passageway for the fasteners being fed from said

1. A fastener driving tool for driving fasteners of a first length and a second longer length as the fasteners are guided in a magazine toward a driving bore to be driven by a driver blade, the fastener driving tool comprising: a nosepiece defining a passageway for the fasteners being fed from said magazine;a nose chamber guide member operatively connected to said nosepiece and movable between a first position and a second position relative to said nosepiece in a direction transverse to an operational flow direction of the fasteners from said magazine;a chamber attached to the nosepiece and sized to house the nose chamber guide member when in the second position; anda biasing element disposed within the chamber and biasing the nose chamber guide member to the first position,wherein in said first position, said nose chamber guide member is substantially aligned with said driving bore to enable driving of the fasteners having the first length, and in said second position, said nose chamber guide member is out of alignment with said driving bore to enable driving of the fasteners having the second length. 2. The fastener driving tool of claim 1, wherein said nose chamber guide member is configured to automatically extend and retract based on the first and second lengths of the fasteners at a substantially right angle to the operational flow direction of the fasteners from said magazine. 3. The fastener driving tool of claim 1, wherein said nose chamber guide member is retractable to said second position upon insertion of the second length fasteners into the magazine such that the second length fasteners contact the nose chamber guide member. 4. The fastener driving tool of claim 1, wherein at least a portion of said driving bore is defined by said nose chamber guide member when said nose chamber guide member is in said first position. 5. The fastener driving tool of claim 4, wherein said driving bore is defined by said nosepiece without said nose chamber guide member when said nose chamber guide member is in said second position. 6. The fastener driving tool of claim 1, wherein the biasing element includes a compression spring. 7. The fastener driving tool of claim 1, wherein movement of the fasteners having the second length toward a fastener bore in said nosepiece forces said nose chamber guide member into said second position. 8. The fastener driving tool of claim 1, wherein said nose chamber guide member includes a slanted outer face angled from a first edge to an opposite second edge for accommodating movement of the fasteners of the second length. 9. The fastener driving tool of claim 1, wherein one edge of said nose chamber guide member defines part of a fastener pathway and an upper portion of the nose chamber guide member is angled to facilitate locating a fastener in said driving bore. 10. The fastener driving tool of claim 1, wherein said nose chamber guide member includes a first guide rod and a second guide rod, said second guide rod being shorter than said first guide rod. 11. The fastener driving tool of claim 10, wherein at least one of said guide rods provides a visual indication of the length of the fasteners in said magazine. 12. The fastener driving tool of claim 1, wherein the biasing element includes a compression spring, and said nose chamber guide member includes a guide pin defining a seat for the compression spring. 13. A nosepiece assembly for a fastener driving tool that drives a fastener supplied from a magazine having a plurality of fasteners, the nosepiece assembly comprising: a nosepiece configured to attach to said fastener driving tool and defining a portion of a bore having an opening for accommodating the fastener;a nose chamber guide member disposed adjacent said opening, said nose chamber guide member movably connected to said nosepiece and configured to move between a first position and a second position relative to said nosepiece, wherein in said first position, said nose chamber guide member is substantially aligned with an inner wall of said nosepiece defining said bore for guiding the fastener when the fastener has a first length, and in said second position, said nose chamber guide member is out of alignment with said inner wall for guiding the faster when the fastener has a second longer length;a chamber attached to the nosepiece and sized to house the nose chamber guide member when in the second position; anda biasing element disposed within the chamber and biasing the nose chamber guide member to the first position. 14. The nosepiece assembly of claim 13, wherein said nose chamber guide member is configured to extend and retract generally perpendicular to a feeding direction of the fasteners in said magazine. 15. The nosepiece assembly of claim 13, wherein said nose chamber guide member is operatively connected to said nosepiece to enable longitudinal movement of said nose chamber guide member between said first and second positions. 16. The nosepiece assembly of claim 13, wherein movement of the fasteners having the second length toward said nosepiece forces said nose chamber guide member into said second position. 17. The nosepiece assembly of claim 13, wherein said nose chamber guide member includes a slanted outer face such that a portion of said outer face is biased against said inner wall of said nosepiece when said guide member is in said first position. 18. The nosepiece assembly of claim 17, wherein said portion of said outer face is retracted away from said inner wall of said nosepiece when said guide member is in said second position. 19. The nosepiece assembly of claim 13, wherein said nose chamber guide member includes a first guide rod and a second guide rod, said second guide rod being shorter than said first guide rod, wherein said first guide rod protrudes out of the chamber when said guide member is in said second position, and said first guide rod is disposed within the chamber when said guide member is in said first position. 20. A fastener driving tool for driving fasteners of a first length and a second longer length as the fasteners are guided in a magazine toward a driving bore to be driven by a driver blade, the fastener driving tool comprising: a nosepiece defining a passageway for the fasteners being fed from said magazine; anda spring-biased nose chamber guide member operatively connected to said nosepiece and including a first guide rod and a second guide rod, said second guide rod being shorter than said first guide rod, the nose chamber guide member movable between a first position and a second position relative to said nosepiece in a direction transverse to an operational flow direction of the fasteners from said magazine;wherein in said first position, said nose chamber guide member is substantially aligned with said driving bore to enable driving of the fasteners having the first length, and in said second position, said nose chamber guide member is out of alignment with said driving bore to enable driving of the fasteners having the second length. 21. The fastener driving tool of claim 20, wherein at least one of said guide rods provides a visual indication of the length of fasteners in said magazine. 22. A nosepiece assembly for a fastener driving tool that drives a fastener supplied from a magazine having a plurality of fasteners, the nosepiece assembly comprising: a nosepiece configured to attach to said fastener driving tool and defining a portion of a bore having an opening for accommodating the fastener; anda nose chamber guide member disposed adjacent said opening, said nose chamber guide member including a first guide rod and a second shorter guide rod and being movably connected to said nosepiece and configured to move between a first position and a second position relative to said nosepiece, wherein in said first position, said nose chamber guide member is substantially aligned with an inner wall of said nosepiece defining said bore for guiding the fastener when the fastener has a first length and said first guide rod is housed within a chamber configured to house said guide member, and in said second position, said nose chamber guide member is out of alignment with said inner wall for guiding the faster when the fastener has a second longer length and said first guide rod protrudes out of the chamber.