Power tool having angled dry fire lockout
AssigneeBlack & Decker Inc.
InventorsLarry E. Gregory, Michael P. Baron, Lee M. Brendel, Todd A. Hagan, Stuart E. Garber
Life of this patent
Estimating the term…
Abstract
A fastening tool having a lockout mechanism which has a dry fire lockout which achieves a controlled lockout override. The lockout mechanism can be part of a fastening tool magazine, a pusher assembly or a nosepiece contact trip. The lockout mechanism can be an angled lockout, a torsion spring lockout, or a fixed member lockout. The fastening tool can have a method of controlling lockout override using a lockout control angle.
Claims20
A fastening device, comprising:
- a magazine having a lockout mechanism;
- the lockout mechanism having a lockout member adapted to receive an override force and configured to have a lockout control angle which has a value of less than 90°;
- wherein the lockout control angle is measured from a lockout plane to a lockout arm axis;
- wherein an axis of operation is configured opposite to the lockout control angle;
- and
- wherein the lockout mechanism is configured to allow a lockout override and has an override resistance of 30 lbf or greater.
A method for controlling a lockout override of a fastening tool, comprising the steps of:
- providing a contact trip having an axis of operation;
- providing a lockout mechanism having a lockout member and adapted to lockout a contact trip, the lockout mechanism providing an override resistance;
- configuring the lockout member to have a lockout control angle which is greater than zero, wherein the lockout control angle is measured from a lockout plane to a lockout arm axis and wherein an axis of operation is configured opposite to the lockout control angle;
- moving the contact trip along the axis of operation toward a contact portion of the lockout member;
- contacting the contact trip against the lockout member at the contact portion;
- providing an override force by the contact trip to the lockout member, the lockout member preventing a lockout override when the override force is less than the override resistance;
- and
- the lockout member allowing a lockout override when the override force is greater than the override resistance.
A means of lockout override control for a fastening tool configured to allow a lockout override, comprising:
- a means of exerting an override resistance force against a contact trip by a lockout member which contacts the contact trip at a lockout control angle which is greater than zero when the contact trip moves against the lockout member;
- and
- wherein the lockout control angle is measured from a lockout plane to a lockout arm axis, and wherein an axis of operation is configured opposite to the lockout control angle.
Dependencies are inferred from the claim text.