Application No. 17/054,436
`Reply to Office Action of June 27, 2022
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`Docket No.: 065933-0796
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`AMENDMENTS TO THE SPECIFICATION
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`Please amend paragraph [0010] of the specification as originally filed as follows:
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`[0010] Fig. 1 is a schematic cross-sectional view of a main portion of an impactrotary tool
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`according to an embodiment.
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`Fig. 2(a) is a front perspective view of a main hammer, Fig. 2(b) is a perspective view of
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`a spindle and a carrier, and Fig. 2(c) is a rear perspective view of a sub-hammer.
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`Fig. 3 is a diagram showing a state where the main hammeris assembled into the sub-
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`hammer.
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`Fig. 4 is an enlarged view of a connection structure of the sub-hammerand the main
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`hammer.
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`Fig. 5 is a diagram showing an analysis result of the behaviors of a torque estimated from
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`a sensor detection value and an actually applied tightening torque.
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`Fig. 6 shows diagrams explaining an operation of the impact rotary tool according to an
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`embodiment.
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`Please amend paragraph [0029] of the specification as originally filed as follows:
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`[0029] The anvil 22 that engages with the main hammer 20 is madeofsteel, and is rotatably
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`supported by the housing 2 via a slide bearing madeofsteel or brass. The tip of the anvil 22 is
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`provided with a tool mounting portion 22a having a quadrangular cross-section for mounting a
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`tip tool 100 to be mounted on a head of a hexagonbolt or a hexagonnut (tightened member 200),
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`as shown in FIG. 6. There is a circumferential clearance (play) between the anvil and a tip tool
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`100 (clearance P1) and betweenthe tip tool and a tightened member 200 (clearance P2), as
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`shown in FIG. 6.
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`Please amend paragraph [0034] of the specification as originally filed as follows:
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`[0034] According to the analysis result, in the line L1, at the time tl, the hammer has an impact
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`on the anvil, and the torque sensor 25 detects the twisting strain of the anvil. The anvil closes the
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`circumferential clearance (P1+P2 as shownin FIG. 6) existing between the bolt and the anvil
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`during a period from the time t1 to the time t2. Asaresult, in the line L2, the actual tightening
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`torque is applied to the bolt at the timet2.
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