In at least one illustrative embodiment, a rotary impact tool comprises a motor including a rotor and an input shaft coupled to the rotor for rotation therewith about an input axis, an anvil configured to be rotated about an output axis and including an output shaft, a carrier driven by the input sh
In at least one illustrative embodiment, a rotary impact tool comprises a motor including a rotor and an input shaft coupled to the rotor for rotation therewith about an input axis, an anvil configured to be rotated about an output axis and including an output shaft, a carrier driven by the input shaft and having a passage extending through a distal end thereof, and a hammer supported and driven by the carrier and configured to impact the anvil to cause the anvil to rotate about the output axis. The anvil may comprise a blade coupled to the output shaft and configured to direct a lubricating fluid through the passage when the anvil or carrier rotates about the output axis.
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1. A rotary impact tool comprising: a motor including a rotor and an input shaft coupled to the rotor for rotation with the rotor about an input axis;an anvil being rotatable about an output axis and including an output shaft;a carrier driven by the input shaft, the carrier having a passage extendin
1. A rotary impact tool comprising: a motor including a rotor and an input shaft coupled to the rotor for rotation with the rotor about an input axis;an anvil being rotatable about an output axis and including an output shaft;a carrier driven by the input shaft, the carrier having a passage extending through a distal end of the carrier; anda hammer supported and driven by the carrier and configured to impact the anvil to cause the anvil to rotate about the output axis;wherein the anvil comprises a blade coupled to the output shaft at an exterior of the carrier and distally from the carrier, the blade directing a lubricating fluid through the passage when the anvil or carrier rotates about the output axis. 2. The rotary impact tool of claim 1, wherein the passage extends between a first surface and a second surface of a support at the distal end of the carrier, the passage extending at an angle of about 25 degrees to about 45 degrees with respect to the first surface. 3. The rotary impact tool of claim 1, wherein the carrier includes a plurality of passages extending through the distal end thereof. 4. The rotary impact tool of claim 1, wherein the blade includes a leading surface and a trailing surface and is configured such that, when the anvil rotates in a first direction, the leading surface leads to move lubricating fluid inwardly toward the leading surface and into the passage. 5. The rotary impact tool of claim 4, wherein the anvil further comprises a second blade coupled to the output shaft diametrically opposite the blade, the second blade including a second leading surface and a second trailing surface. 6. The rotary impact tool of claim 5, wherein the second blade is configured such that, when the anvil is rotated in the first direction, the second leading surface of the second blade leads to move lubricating fluid inwardly toward the second leading surface and into the passage. 7. The rotary impact tool of claim 5, wherein the second blade is configured such that, when the anvil is rotated in the first direction, the second trailing surface leads and, when the anvil is rotated in a second direction opposite the first direction, the second leading surface leads. 8. The rotary impact tool of claim 1, wherein the blade extends outwardly relative to the anvil and is configured such that, when the anvil is rotated in a first direction, lubricating fluid is moved inwardly between the blade and the anvil and into the passage. 9. The rotary impact tool of claim 1, wherein the blade is substantially planar and positioned at an angle with respect to a first surface of a support at the distal end of the carrier. 10. The rotary impact tool of claim 1, wherein the blade extends outwardly from a ring having a central keyed passage that mates with a keyed structure on the anvil. 11. A drive train comprising: an input shaft rotatable about an input axis;an anvil being rotatable about an output axis, the anvil including an output shaft;a carrier driven by the input shaft, the carrier having a passage extending through a distal end of the carrier; andan impactor including a hammer supported and driven by the carrier and configured to impact the anvil to cause the anvil to rotate about the output axis;wherein the anvil comprises a blade coupled to the output shaft at an exterior of the carrier and distally from the carrier, the blade directing a lubricating fluid through the passage when the anvil or carrier rotates about the output axis. 12. The drive train of claim 11, wherein the blade includes a concave surface and a convex surface and is configured such that, when the anvil rotates in a first direction, the concave surface leads to move lubricating fluid inwardly toward the concave surface and into the passage. 13. The drive train of claim 12, wherein the anvil further comprises a second blade diametrically opposite the blade, the second blade including a second concave surface and a second convex surface. 14. The rotary impact tool of claim 13, wherein the second blade is configured such that, when the anvil is rotated in the first direction, the second concave surface of the second blade also leads to move lubricating fluid inwardly toward the second concave surface and into the passage. 15. The rotary impact tool of claim 13, wherein the second blade is configured such that, when the anvil is rotated in the first direction, the second convex surface leads and, when the anvil is rotated in a second direction opposite the first direction, the second concave surface leads. 16. The drive train of claim 11, wherein the blade extends outwardly relative to the anvil and is configured such that, when the anvil is rotated in a first direction, lubricating fluid is moved inwardly between the blade and the anvil and into the passage. 17. The drive train of claim 11, wherein the blade extends outwardly from a ring having a central keyed passage that mates with a keyed structure on the anvil.
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이 특허에 인용된 특허 (11)
Kasai Kaname (Kawagoe JPX) Mukumoto Takaji (Kawagoe JPX) Asakura Toshikazu (Sayama JPX) Ueda Ryoji (Iruma JPX), Apparatus for absorbing oil pressure in an impact type tool.
Lebisch, Helmut; Baumann, Otto; Mueller, Rolf; Saur, Dietmar, Machine tool with a chamber for lubricant agent and a pressure equalization device for said chamber.
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