Patents by Inventor Ernest L. Schlage

Ernest L. Schlage has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4114411
    Abstract: An augmented key and cylinder lock has a housing with a bore therein concentric about an axis. A plug in the bore is rotatable about the axis and has a flange on one end. There is a radial pin tumbler mechanism in the plug and housing access to which is afforded by a keyway in the plug which extends through the flange leaving a notch therein. A key serrated along one edge to operate the pin tumbler mechanism is receivable in the keyway to occupy an operating position. In that position, a shoulder adjacent the serrated edge of the key substantially abuts the end face of the flange. In that position another, axially elongated shoulder on the key adjacent its other edge axially displaces a spring pressed detent, supported on the housing, out of the notch. This frees the plug from rotational restraint by the detent.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: September 19, 1978
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4107966
    Abstract: A selectively rotatable cylinder for a lock has a cylinder housing with a bore extending along an axis. A cylinder plug having a keyway therein is rotatable in the bore about the axis. The plug is connected to a driving means for actuating any connected lock mechanism. In the cylinder body and cylinder plug are pin tumblers adapted to be positioned by a key in the keyway. An upper tumbler pin in the cylinder body is spring-pressed toward the keyway. A portion of the cylinder plug in the transverse plane of the upper tumbler pin is cut away to provide a substantially chordal cam surface or ramp extending from the periphery of the plug to a radially inward intersection with the keyway. The upper tumbler pin follows the ramp and moves toward the axis as the plug is turned by a key in the keyway. The side of the key encounters the lowered upper tumbler pin after a predetermined amount of rotation about the axis, thus preventing further rotation of the cylinder plug.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: August 22, 1978
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4107968
    Abstract: A tally lock has an enclosure frame adapted to be mounted on a door. A lock cylinder is disposed on the frame and carries a lock plug rotatable within the cylinder. At one end of the plug is a flange accessible through an opening in the frame and having a keyway therein into which extends a tab on a driver disc mounted for rotation in a ring on the frame. The driver disc has a flat and acts as a cam against a plate pivoted on the frame and connected by a pivoted link to a counter also mounted on the frame and disposed to display through another opening in the frame.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: August 22, 1978
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4073172
    Abstract: A high security lock has a protective shell with a hole in it. A lock body is held within the shell by an end plate having a loop around the body. A plug having an end flange is rotatable in the body and is pierced by a keyway defining an edge notch in the end flange. A guard plate is disposed in the hole and over the end of the plug and is arranged to rotate in the shell with the plug by a tab disposed in the edge notch so that a restricted opening through the guard plate is kept in alignment with the keyway.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: February 14, 1978
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4073527
    Abstract: A door lock for use on a door panel has bores containing a lock mechanism including a chassis on which spindles are mounted for rotation about two parallel axes. Door handles or other lock operators are disposed on opposite ends of both spindles and are interconnected variously to operate a lock bolt and a latch bolt. The lock and latch bolts are also disposed in the bores and are joined to the chassis. One of the handles is joined to one of the spindles by a clutch including an axially movable member operated by an electromagnet within the bores, the electromagnet being connected to the clutch member by an actuator movable in a path having an axial component.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: February 14, 1978
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4065162
    Abstract: A lock strike construction is for use with a wall having at least a cripple in the framing thereof and adjacent to a door casing side rail separated from the cripple by an intervening space. A door panel cooperates with the casing and has a lock with a bolt engageable with a strike on the door casing in a deeply recessed mortise. A planar elongated plate, symmetrical about a vertical axis, is in the mortise. An elongated bolt opening and a pair of screw clearance holes go through the planar plate on the axis. Also in the planar plate is a pair of screw rod holes, both disposed on one side of the axis. These receive a pair of screw rods extending through the intervening space and into the cripple as cantilever beams. The usual strike plate overlies the planar plate, its bolt opening registering with the bolt opening in the plate and its screw openings substantially registering with the screw clearance holes.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: December 27, 1977
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 4028917
    Abstract: A key retaining cylinder lock device has a cylinder body with a bore therein extending along an axis. A plug is rotatable in said bore about the axis and is confined against axial translation. The plug has an axially extending keyway therein open to said bore and adapted to receive a key having an edge notch partly defined by an inner wall extending at least partially transversely of said axis. The plug also has a circumferential groove open to the keyway and open to a chamber in part defined by a plug chordal surface lying on both sides of the keyway and substantially perpendicular to the plane of symmetry of the keyway. In the groove and chamber is a partial ring having a central, inwardly directed lug adapted to contact the plug chordal surface with rotary lost motion therebetween.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: June 14, 1977
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 3967846
    Abstract: A door lock has a frame in which a knob spindle is mounted for rotation about an axis. The spindle can be prevented from rotation on the frame by a bar movable along the axis into and out of a position in which the bar engages both the frame and a slot in the spindle. The bar is moved by a spring and by a manual button mounted in an inside knob on the frame. The spindle can also be prevented from rotation on the frame by a pin radially movable on the frame into and out of a position in which the pin engages both the frame and the spindle slot. The pin is moved by a spring and by an arcuate electromagnet disposed coaxially of the spindle and having a polepiece in position to influence an armature on the pin. The customary key-operated lock is installed in an outer knob fastened onto the spindle.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: July 6, 1976
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 3967481
    Abstract: A detector cylinder is used in a door lock and includes a cylinder body having a plug bore therein and having one or more pin bores in the body opening into the plug bore. A plug is rotatable in the plug bore and has a keyway and one or more pin openings communicating with the keyway and in one rotated position of the plug also communicating with the pin bore or bores. There are one or more first pins slidable in the pin bores and one or more second pins slidable in the pin openings. A spring or springs are disposed to urge the pins towards the keyway. An electrically conducting contact is disposed on the cylinder body in position to be abutted by a first pin in one of the longitudinal locations of the first pin. There is an electrical circuit that is completed when the first pin abuts the contact. The circuit may include an alarm and a switch for preventing an alarm.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: July 6, 1976
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 3966289
    Abstract: An electric power coupler for use with first and second door members relatively movable along a predetermined path toward and away from substantial abutment has a first frame mounted on the first door member. An inner pair and an outer pair of first frame electrical connectors are mounted on the first frame in a recess therein having a lateral opening in the direction of the path. The first connectors have exposed surfaces parallel to the path. At least some of the connectors are resilient in a direction normal to the path. The second frame is mounted on the second door member and supports a plunger for movement in a direction normal to the path. The plunger is spring urged to project, and cam surfaces on the first frame and the second frame cause the plunger to retract. The plunger has opposite walls partly defining a chamber therein having a lateral aperture confronting the recessed opening.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: June 29, 1976
    Inventor: Ernest L. Schlage
  • Patent number: 3951442
    Abstract: A pivoting latch and lock for a door hinged in a frame having a strike aperture has a detent latch that can be moved out of the strike opening merely by pulling the door open unless the detent latch is specially blocked against such movement. In one embodiment a frame is installed on the door and presents an edge opening. Normally spring-projected partly through the edge opening is a detent latch having a central body carrying one or more pivot lugs guiding rotation of the detent latch about one or more axes located within the frame and alongside the detent latch. The detent latch has a surface associated with each axis so shaped as to clear the frame opening when the latch is rotated about that axis. A lever is pivoted on the frame to move into and out of a position blocking rotation of the detent latch. The lever may be operated by a solenoid or electromagnet. If desired, the same electrical device can move the two levers of duplicate pivoting latches.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: April 20, 1976
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: 3939315
    Abstract: A door lock condition indicator includes a lock frame adapted to be mounted on a door panel. Outer and inner spindles carrying knobs and rotatable about an axis are mounted on the lock frame to actuate a lock mechanism. A locking bar is disposed partly in the lock frame and partly in the inner spindle and is movable parallel to the axis between one position in engagement with the lock frame and free of the outer spindle and another position in engagement with the lock frame and engaging the outer spindle to prevent the lock mechanism from being actuated thereby. There is an electric switch included in an indicator circuit and disposed on the lock frame in a position to be engaged by the locking bar and actuated to close the circuit when the locking bar is in a selected one of the positions.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: February 17, 1976
    Assignee: Schlage Lock Company
    Inventor: Ernest L. Schlage
  • Patent number: RE31276
    Abstract: A lock strike construction is for use with a wall having at least a cripple in the framing thereof and adjacent to a door casing side rail separated from the cripple by an intervening space. A door panel cooperates with the casing and has a lock with a bolt engageable with a strike on the door casing in a deeply recessed mortise. A planar elongated plate, symmetrical about a vertical axis, is in the mortise. An elongated bolt opening and a pair of screw clearance holes go through the planar plate on the axis. Also in the planar plate is a pair of screw rod holes, both disposed on one side of the axis. These receive a pair of screw rods extending through the intervening space and into the cripple as cantilever beams. The usual strike plate overlies the planar plate, its bolt opening registering with the bolt opening in the plate and its screw openings substantially registering with the screw clearance holes.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: June 14, 1983
    Assignee: Ingersoll-Rand Company
    Inventor: Ernest L. Schlage