	US 11,986,893 B2
	Hardware fastener with movable threaded element and one or more spring-like members
Alan J. Bookheimer, Greensboro, PA (US); Ruy Frota de Souza Filho, Latrobe, PA (US); Jason Won Goldsmith, Greensburg, PA (US); and Jeremy P. Canonge, Pittsburgh, PA (US)
Assigned to KENNAMETAL INC., Latrobe, PA (US)
Filed by Kennametal Inc., Latrobe, PA (US)
Filed on Jun. 28, 2021, as Appl. No. 17/359,732.
Application 17/359,732 is a division of application No. 16/239,094, filed on Jan. 3, 2019, granted, now 11,148,213.
Prior Publication US 2021/0323082 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F16B 37/04 (2006.01); B23C 5/00 (2006.01); B23C 5/08 (2006.01); B23C 5/22 (2006.01); F16B 37/00 (2006.01)

CPC B23C 5/2226 (2013.01) [B23C 5/006 (2013.01); B23C 5/08 (2013.01); F16B 37/00 (2013.01); F16B 37/044 (2013.01)]

20 Claims

1. A hardware fastener comprising a movable threaded element suspended in a cavity formed in a pocket of a cutting tool by one or more spring members that create an area, A, of reduced stiffness in the cavity, thereby allowing the movable threaded element to move a predetermined distance relative to the body within the cavity when torque is applied to a threaded fastener, thereby placing the threaded fastener under pretension, wherein the one or more spring members having a first length, L1, when the hardware fastener is in a loose or non-tightened condition, and wherein the one or more spring members have a second length, L2, which is different than the length, L1, when the hardware fastener is in a tightened state, thereby placing the threaded fastener under pretension in a pre-loaded state.