Lock

Claim 2

A lock comprising two cylinders arranged coaxially, one inside the other, one of the cylinders being adapted to be nonrotatable with the other cylinder being rotatably mounted, the rotatable cylinder having a pluraltiy of longitudinally extending slots spaced around the outer periphery thereof for slidably receiving a tumbler, at least a single tumbler slidably mounted in one of said slots, the nonrotatable cylinder having a tumbler receiving slot constructed and defined at a preselected location within the internal wall thereof and extending radially thereof for accommodating the tumbler, and a pusher slidably mounted within the nonrotatable cylinder adjacent the tumbler, means for continuously urging the pusher in a preselected direction, the outer peripheries of the tumbler and pusher being constructed and defined in a releasable interlocked relationship to cause the tumbler to move in the direction the pusher is moved and to prevent the rotation of the rotatable cylinder except when the tumbler is in alignment with said tumbler receiving slot.

Claim 3

A lock comprising a pair of coaxially arranged cylinders, one of the cylinders being arranged to be rotatable relative to the other cylinder, the rotatable cylinder slidably mounting a plurality of tumblers adapted to be moved longitudinally thereof, a plurality of tumblers mounted in sliding engagement with the rotatable cylinder, and a corresponding plurality of pusher elements each mounted adjacent a tumbler and arranged in engagement therewith to cause the tumbler to move in unison with the movement of the pusher when the two are engaged, the pair of cylinders being constructed and defined with an unlocking terminal section for each of the tumblers to cause each tumbler moved to the terminal section by a pusher to become disengaged from its pusher whereby upon movement of all of the tumblers to said terminal section the rotatable cylinder may be rotated.

Claim 4

A lock comprising a pair of coaxially arranged cylinders, one of the cylinders being arranged to be rotatable relative to the other cylinder, the rotatable cylinder slidably mounting a plurality of tumblers adapted to be moved longitudinally thereof, a plurality of tumblers mounted in sliding engagement with the rotatable cylinder, and a corresponding plurality of pusher elements each mounted adjacent a tumbler and arranged in engagement therewith to cause the tumbler to move in unison with the movement of the pusher when the two are engaged, the pair of cylinders being constructed and defined with an unlocking terminal section for each of the tumblers to cause each tumbler moved to the terminal section by a pusher to become disengaged from its pusher whereby upon movement of all of the tumblers to said terminal section the rotatable cylinder may be rotated.

Claim 5

A lock as defined in claim 2, including key means engageable with each of said pushers for setting same to preselected locking positions.

Claim 6

A lock as defined in claim 2 including means for rendering the lock pick resistant.

Claim 7

A lock as defined in claim 2 wherein the rotatable cylinder is rotatable through 360* in both directions.

Claim 8

A lock comprising a cylinder mounted in a nonrotatable relationship, a rotatable cylinder coaxially mounted within the nonrotatable cylinder and having a plurality of spaced apart longitudinally extending slots arranged around the outer periphery thereof, a corresponding pluraltiy of tumblers mounted in sliding engagement with an individual slot in the rotatable cylinder, the internal wall of the nonrotatable cylinder having a radial opening to accommodate the tumblers to allow the rotatable cylinder to be rotated only when the tumblers are in alignment with the radial opening, a plurality of movable means mounted between the cylinders and engageable and disengageable with the tumblers for slidably positioning the tumblers along the inner cylinder to preselected locations when in engagement with a tumbler to thereby maintain the lock in a closed condition; and for positioning the tumblers in alignment with the radial opening to open the lock and allow the rotatable cylinder to be rotated thereby disengaging the tumblers, said plurality of movable means being accessible from one end of the rotatable cylinder to accommodate a key operative to engage the movable means for opening and closing the lock.

Claim 9

A lock comprising a cylinder mounted in a nonrotatable relationship, a rotatable cylinder coaxially mounted within the nonrotatable cylinder and having a plurality of spaced apart longitudinally extending slots arranged around the outer periphery thereof, a corresponding pluraltiy of tumblers mounted in sliding engagement with an individual slot in the rotatable cylinder, the internal wall of the nonrotatable cylinder having a radial opening to accommodate the tumblers to allow the rotatable cylinder to be rotated only when the tumblers are in alignment with the radial opening, a plurality of movable means mounted between the cylinders and engageable and disengageable with the tumblers for slidably positioning the tumblers along the inner cylinder to preselected locations when in engagement with a tumbler to thereby maintain the lock in a closed condition; and for positioning the tumblers in alignment with the radial opening to open the lock and allow the rotatable cylinder to be rotated thereby disengaging the tumblers, said plurality of movable means being accessible from one end of the rotatable cylinder to accommodate a key operative to engage the movable means for opening and closing the lock.

Claim 10

A lock as defined in claim 6 wherein the tumblers are U-shaped and said radial opening comprises a pair of spaced apart openings constructed and defined to accommodate the arms of a tumbler.

Claim 11

A lock as defined in claim 6 wherein said plurality of movable means each comprise pusher means having a central aperture extending from one end, a corresponding plurality of springs mounted in the apertures for urging all of the pusher means towards the key end of the cylinders.

Claim 12

A lock as defined in claim 6 including means for rendering the lock pick resistant.

Claim 13

A lock as defined in claim 9 wherein said pick resist means is secured to the nonrotatable cylinder.

Claim 14

A lock as defined in claim 9 wherein said pick resist means comprises an element interengaging the tumblers over their entire travel except when in the said open position.