Master Lock Company LLC

Dean A Paulson

Lea Marie Plato

Scott B Stevens

Gary R Burmesch

D Scott Kalous

Jesse Alan Marcelle

Glenn P Meekma

John Weber

Thomas J Schlaefer

Lock

A locking device includes a shaft, a locking head joined to the shaft, and a lock body having a lock opening for receiving a locking end of the shaft. A latch member is disposed within the lock body and includes a shaft aperture for receiving the locking end of the shaft therethrough. The shaft aperture includes an edge portion spring biased radially inward of the lock opening to engage the recessed portion with the edge portion when the locking end of the shaft is disposed in the lock opening. A locking member is disposed within the lock body. Rotation of the locking member from a locked condition to an unlocked condition moves the edge portion of the shaft aperture out of engagement with the recessed portion of the shaft to permit withdrawal of the shaft from the lock opening.

Pin locking device

A latch assembly for a padlock includes a rocker having a central through bore and a tongue extending from an outer periphery of the rocker. A latch member is slidably disposed in a cavity in the rocker. A torsion spring is assembled to a spring retaining surface of the rocker and includes first and second legs extending from a center coil portion positioned around the through bore. The first leg extends beyond the outer periphery of the rocker, and the second leg terminates inward of the outer periphery of the rocker and engages a portion of the rocker to apply a biasing force against the rocker when the first leg is in a spring-loaded condition. The rocker comprises at least one spring fastening member securing the torsion spring to the spring retaining surface of the rocker.

Latching arrangements for a padlock

A recodeable lock includes a housing, a cylinder plug, a plurality of wafer tumblers, and a sidebar coupled with the cylinder plug. The sidebar is assembled with a plurality of code blocks and a codebar releasably securing the code blocks to the sidebar. A liftbar is disposed in the housing radially outward of the cylinder plug and is configured to selectively engage a radially outward extending appendage of the codebar when the cylinder plug and sidebar are rotated to a recoding orientation, to release the code blocks from the sidebar. The housing includes a circumferential track axially positioned to receive the appendage of the codebar to permit greater than 180 degree rotation of the cylinder plug and sidebar with respect to the housing.

Key cylinder lock arrangements

A padlock includes a lock body, shackle, locking mechanism and latch member. The latch member includes a laterally outermost shackle engaging portion that lockingly engages a recess in the shackle when the locking mechanism is in a locked condition and is disengageable from the recess when the locking mechanism is in an unlocked condition. The latch member is sized such that upward facing surfaces of the latch member that align with a circumferential edge of a shackle opening are limited to a notch laterally aligned with a laterally innermost portion of the circumferential edge when the shackle engaging portion is in a normal locking engagement with the recess.

Growing community of inventors

Milwaukee, WI, United States of America

Dean A Paulson