Jacobs Chuck Technology Corporation

Power Tool Holders, Inc.

Reliance Electric Company

Jacobs Chuck Manufacturing Company

Other

International Business Machines Corporation

Robert O Huff

Paul T Jordan

William F Forquer

Louis M Shadeck

Valerie D Owens

Edward F Krome, Jr

Gebus Barnsfather

William F Forguer

Richard L Marcengill

A non-impact keyless chuck suitable for use with manual or powered drivers is disclosed. The chuck comprises a body which carries a rotatable split nut having a relatively fine thread and a plurality of slidable jaws, which may be identical, driven by the rotatable nut. An anti-friction bearing is disposed between the rotatable nut and a bearing thrust ring mounted on the body. A clutch or torque limiting mechanism is provided to limit the tightening torque to a predetermined value while the loosening torque may be limited or unlimited. The front sleeve, and rear sleeve, if used, may be formed from a structural plastic to reduce manufacturing costs. A relatively soft elastomeric grip boot may be placed on the front sleeve to improve the grip and temporarily restrain and center the tool during chuck tightening or loosening operations. A relatively soft elastomeric grip boot may also be placed on the rear sleeve, if used.

Non-impact keyless chuck

A chuck for a manual or powered driver having a rotatable driveshaft includes a body having a front section and a rear section. A plurality of jaws are operatively associated with the body, and the jaws are adapted to engage a tool to be utilized by the driver. The body's rear section includes serrations extending outwardly therefrom. A sleeve member is pressed onto the serrations whereby the serrations dig into the sleeve to at least assist in rotationally securing the sleeve to the body.

Non impact keyless chuck

A chuck for use with a manual or powered driver having a rotatable drive shaft including a primary tightening mechanism utilizing a three-jaw assembly actuated by a nut or tightening ring and a supplemental tightening mechanism. The supplemental tightening mechanism includes a camming portion defining a tightening cam profile. The supplemental tightening mechanism further includes a plurality of lever bars, one end of each of the lever bars forming a cam follower and the other end of each of the lever bars operatively associated with the nut so that when the supplemental tightening mechanism is actuated in a tightening direction, the lever bars will force the nut forward to produce an enhanced tightening force on the tool through the jaws. The supplemental tightening mechanism is configured to allow drive through release.

Lever actuated keyless chuck

A chuck for releasably holding a tool such as a drill bit has a torque limiting coupling in the mechanism which is rotated manually to close the jaws of the chuck on the tool. When the chuck has been tightened on the tool by a certain amount, the torque limiting coupling releases. Thereafter, continued manual rotation of the component which provides the input to the coupling operates a cam and cam follower mechanism which forces the jaws of the chuck into even tighter engagement with the tool. When the chuck is subsequently loosened to release the tool, the cam and cam follower mechanism automatically resets to ready the chuck for reuse.

Chuck with torque limiting mechanism and inclined plane for final

A plastic grip boot for a metal part of a chuck, typically a keyless chuck, is disclosed. The grip boot is insert molded to a rotatable metal part of a chuck, the metal part extending under the grip boot for the axial length of the grip boot which is normally gripped by the user in order to provide support to the grip boot. During molding, the plastic preferably flows into surface features of the metal part to help secure the grip boot to the metal part. The grip boot improves user grip of the metal part during operation of the chuck to adjust the spacing of the chuck jaws.

Plastic grip boots for chucks

A removable nosepiece for a chuck includes a plastic and/or metal ring which is removably mounted on a distal portion of either the main body or a sleeve of the chuck so that the ring is concentric with the central longitudinal axis of the chuck. The removable nosepiece may include a washer-shaped member of rubber extending radially inwardly from the plastic and/or metal ring. If provided, the rubber washer resiliently engages and centers a tool inserted into the chuck through the central aperture of the washer.

Growing community of inventors

Piedmont, SC, United States of America

Robert O Huff