US 11,731,253 B2
Impact tool angular velocity measurement system
Warren A. Seith, Bethlehem, PA (US); Jason D. Urban, Kintnersville, PA (US); Douglas E. Pyles, Bethlehem, PA (US); and Mark T. McClung, Andover, NJ (US)
Assigned to Ingersoll-Rand Industrial U.S., Inc., Davidson, NC (US)
Filed by Ingersoll-Rand industrial U.S., Inc., Davidson, NC (US)
Filed on Aug. 24, 2021, as Appl. No. 17/410,726.
Application 17/410,726 is a continuation of application No. 15/664,577, filed on Jul. 31, 2017, granted, now 11,097,405.
Prior Publication US 2021/0379744 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B25B 23/147 (2006.01); B25B 21/02 (2006.01)
CPC B25B 23/1475 (2013.01) [B25B 21/02 (2013.01); B25B 21/026 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An impact tool comprising:
an output drive;
an anvil coupled to the output drive, the anvil having an axis of rotation and including an anvil impact surface configured to rotate about the axis of rotation, the anvil impact surface including an outer end positioned radially outward from the axis of rotation;
a hammer configured to apply a rotational impact force on the anvil to rotate the output drive, the hammer including a hammer impact surface configured to engage the anvil impact surface;
a plurality of spaced apart targets located on a surface of the anvil, the surface of the anvil and the plurality of spaced apart targets located radially inward towards the axis of rotation from the outer end of the anvil impact surface;
an anvil angle sensor located proximate to the surface of the anvil, the anvil angle sensor configured to detect respective ones of the plurality of spaced apart targets;
a second plurality of spaced apart targets located on a surface of the hammer;
a hammer angle sensor located proximate to a surface of the hammer, the hammer angle sensor configured to detect respective ones of the second plurality of spaced apart targets; and
a controller electrically coupled with the anvil angle sensor and the hammer angle sensor,
wherein the anvil angle sensor is configured to generate a first signal in response to detection of one or more of the plurality of spaced apart targets by the anvil angle sensor and the hammer angle sensor is configured to generate a second signal in response to detection of one or more of the second plurality of spaced apart targets by the hammer angle sensor, the first signal and the second signal being furnished to the controller, and
wherein the controller determines an attribute associated with operation of one or more of the hammer or the anvil based at least partially on the first signal and the second signal.