Norris Industries, Inc.

Ni Industries, Inc.

William J Fane

Hagen Dietrich

Joseph Potschka

For an electronically motivated door lock there is a key carrying magnetic coding for actuating an electronically triggered release mechanism to unlock a door. Insertion of the key in the keyway initially closes a switch to energize the electronic circuit. The electronic circuit is programmed to motivate a motor driven mechanism in successive stages to move a blocking finger into and out of engagement with a notch in a rotatable disc on a cylinder plug which operates the latch bolt. The motor rotates preferably in one direction but by use of a rotating drive pin shiftable from end to end of a transverse slot, the blocking finger is moved alternately into and out of engagement with the notch in response to the successive energizations of the motor.

Drive mechanism for key operated electronic lock

One part of a key-in-knob lock set functions in a normal manner such that when the lock set is unlocked, either the outside or inside knob can be manipulated to open the door by withdrawing the latch bolt from a normal spring latch extended position. When, instead, the lock set is locked, the latch bolt is extended an exceptionally long distance into the frame to a dead bolt position. Extension and retraction of the latch bolt to and from dead bolt position is accomplished by manipulation of a main cam through the agency of a key in the outside or a turn button on the inside. For withdrawing the latch bolt from the normal spring latch extended position, an escutcheon housing for the outside knob or a corresponding escutcheon housing for the inside knob serves, by moving transversely of the axis of rotation of the knob, to rotate a radially extending tooth-like element on the spindle which, acting through the main cam, withdraws the latch bolt. By rotation of the key on the outside, or the turn button on the inside, the spindle is rotated a greater amount, far enough to have the main cam extend the latch bolt an additional distance to the dead bolt position. In that dead bolt position the tooth-like element for the hub cam of the outside knob is moved out of the path of movement of the respective drive housing so that rotation of the outside knob has no effect on the latch bolt. The tooth-like element for the hub cam of the inside knob remains, however, in movable engagement with the corresponding drive housing so that rotation of the inside knob does in fact withdraw the latch bolt from the dead bolt position.

Spring/dead bolt lock assembly

One part of a key-in-knob lock set functions in a normal manner such that when the lock set is unlocked, either the outside or inside knob can be manipulated to open the door by withdrawing the latch bolt from a normal spring latch extended position. When, instead, the lock set is locked, the latch bolt is extended an exceptionally long distance into the frame to a dead bolt position. Extension and retraction of the latch bolt to and from dead bolt position is accomplished by manipulation of a main cam through the agency of a key in the outside knob or a turn button on the inside knob. For withdrawing the latch bolt from the normal spring latch extended position an escutcheon housing for the outside knob or a corresponding escutcheon housing for the inside knob serves, by moving transversely of the axis of rotation of the knob, to rotate a radially extending finger on the spindle which, acting through the main cam, withdraws the latch bolt. By rotation of the key in the outside knob, or the turn button on the inside knob, the spindle is rotated a greater amount, far enough to have the main cam extend the latch bolt an additional distance to the dead bolt position. In that deadbolt position the finger for the hub cam of the outside knob is moved out of the path of movement of the respective drive housing so that rotation of the outside knob has no effect on the latch bolt. The finger for the hub cam of the inside knob remains, however, in the path of movement of the corresponding drive housing so that rotation of the inside knob does in fact withdraw the latch bolt from the dead bolt position.

Combination spring/dead bolt lock

A disengaging spindle locking mechanism for the latch bolt of a mortise type lock is actuated by the locking slide which is normally employed to engage a retractor hub to prevent the hub from being rotated. At the inner end of a split spindle where it is in non-rotatable engagement with the retractor hub there is a cam surface. On the inner end of a locking slide is a cam surface which cams the spindle out of engagement with the hub as hub action is blocked by the slide. Thereafter, should force be applied to the spindle, it will merely spin in place and no damage will be done to the lock mechanism such as might otherwise be done by unauthorized persons to force open the lock.

Growing community of inventors

Vancouver, Canada

William J Fane