Patents by Inventor L. C. Derek Chamberlain
L. C. Derek Chamberlain 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).
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Patent number: 6042417Abstract: A power feed adapter comprising: a battery holder; an adapter cap for attachment to the battery holder, the adapter cap having an electrical contact thereon, the electrical contact comprising: a central contact connected to a positive terminal of the battery holder; an insulating ring surrounding the central contact; and a ground ring surrounding the insulating ring, the ground ring being connected to a negative terminal of the battery holder.Type: GrantFiled: July 7, 1998Date of Patent: March 28, 2000Assignee: Schlage Lock CompanyInventors: Frederick M. Hensley, L. C. Derek Chamberlain
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Patent number: 6038896Abstract: A door lock (1), preferably operable both by a mechanical key (C) with a key cylinder (60) and by an electronic signal and having inside and outside handles (A, B) mounted on inside and outside hollow spindles (10, 50), for mounting on a door having an inside face and an outside face, has a cylindrical lock chassis (80) with a provision for retracting a latch bolt (4) in response to rotation of either of the hollow spindles (10, 50); a member (40) for selectively locking the outside spindle (50) against rotation; a reversible electric motor (20) mounted coaxially within the inside spindle (10), the motor being secured against rotation but free to slide axially against resistance provided by a biasing member (21), and having a motor shaft (31) extending through the cylindrical lock chassis (80) to operably engage the member (40) for locking the outside spindle (50); a power supply (101) for the motor (20); and a mechanism (42, 45, 61) for selectively moving the member (40) between locked and unlocked positionsType: GrantFiled: January 11, 1999Date of Patent: March 21, 2000Assignee: Schlage Lock CompanyInventors: L. C. Derek Chamberlain, Frederick M. Hensley
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Patent number: 5794991Abstract: A lock assembly of a door preparation includes at least one spring latch member which is spring biased within a door jamb bore between an extended position and a retracted position in which the spring latch member, when the door is being opened, engages a strike plate of the door jamb and is moved inwardly within the door preparation for allowing the door to be opened. A dead bolt, which operates independently from the spring latch member, is movable between a retracted position in which it is within the door preparation and an extended position in which it is extended within the door jamb bore for locking the door. A projecting pin is movable between a first position in which the projecting pin is disposed generally between the spring latch member and dead bolt and a second position in which the pin projects laterally outwardly from a peripheral edge of the spring latch member when the dead bolt is moved to its extended position to engage the strike plate.Type: GrantFiled: June 3, 1996Date of Patent: August 18, 1998Assignee: Schlage Lock CompanyInventors: Jon M. Smallegan, L. C. Derek Chamberlain, Dario L. Pompeii
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Patent number: 5791178Abstract: An apparatus for providing an electrical transmission path in a door lock to an electrical lock operating system from an electrical contact pin protruding axially from a pin tower of an insulated key cylinder having an electronic touch button for a front face, the door lock having an outside spindle operably engaged with a door handle containing the insulated key cylinder, includes an insulated contact ring surrounding the spindle and having an electrically conductive pad on a portion of its outwardly facing surface, which contacts the electrical contact pin when the door handle is in its parked position, and a cable connected to the conductive pad and extending through the non-moving part of the door lock to the controlling electronics of the lock.Type: GrantFiled: December 26, 1995Date of Patent: August 11, 1998Assignee: Schlage Lock CompanyInventors: L. C. Derek Chamberlain, Richard M. Davidian
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Patent number: 5782118Abstract: A door lock, preferably operable both by a mechanical key with a key cylinder and by an electronic signal and having inside and outside handles mounted on inside and outside hollow spindles, for mounting on a door having an inside face and an outside face, has a cylindrical lock chassis with a provision for retracting a latch bolt in response to rotation of either of the hollow spindles; a member for selectively locking the outside spindle against rotation; a reversible electric motor mounted coaxially within the inside spindle, the motor being secured against rotation but free to slide axially against resistance provided by a biasing member, and having a motor shaft extending through the cylindrical lock chassis to operably engage the member for locking the outside spindle; a power supply for the motor; and a mechanism for selectively moving the member between locked and unlocked positions.Type: GrantFiled: July 16, 1996Date of Patent: July 21, 1998Assignee: Schlage Lock CompanyInventors: L. C. Derek Chamberlain, Frederick M. Hensley
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Patent number: 5695227Abstract: A lock platform for a door includes a face plate lying in a vertical plane parallel to the plane of the door and an outer peripheral edge margin which extends from the outer periphery of the face plate generally perpendicularly away from the face plate and towards the door when mounting the lock platform on the door. The edge margin engages the door in such a manner that the face plate is spaced from the door thereby creating a space between the face plate and the door for accommodating components of a handle and lock assembly. The lock platform further includes an outwardly facing hollow boss located on the face plate and spaced from the hole of the door when mounting the lock platform thereon. The boss defines a first opening for receiving a handle of the handle and lock assembly or the like therein. The lock platform also includes a second opening for receiving a key cylinder, thumb turn member or the like therein.Type: GrantFiled: September 11, 1996Date of Patent: December 9, 1997Assignee: Schlage Lock CompanyInventors: Jon M. Smallegan, L. C. Derek Chamberlain, Dario Pompeii
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Patent number: 5689985Abstract: An electronic touch key for operating an electronic lock in an electronic lockset, includes a handle having front and rear surfaces; an electronic touch button mounted to the front surface of the handle; and a device, mounted to the rear surface of the handle, for providing a tactile signal to the user by oil-canning when the electronic touch button has been touched to a lock with the proper force.Type: GrantFiled: September 29, 1995Date of Patent: November 25, 1997Assignee: Schlage Lock CompanyInventor: L.C. Derek Chamberlain
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Patent number: 5683127Abstract: A deadbolt latch assembly having an interlocking front faceplate and a collar which capture a locking tab of the deadbolt housing permitting the rapid field assembly of a selected front face or trim plate by simply engaging intermeshing fingers by rotation of the collar to secure the assembly which thereafter may be driven into an aperture prepared for a door lock.Type: GrantFiled: June 10, 1996Date of Patent: November 4, 1997Assignee: Schlage Lock CompanyInventor: L. C. Derek Chamberlain
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Patent number: 5676407Abstract: A dead bolt actuating assembly capable of moving a dead bolt between a retracted position and an extended position includes a latch arm having an end portion mounted on a rotating shaft. The latch arm is movable in response to the rotational movement of the shaft between a first position in which the dead bolt is in its retracted position and a second position in which the dead bolt is in its extended position. A link having an elongate body is pivotally connected to the opposite end portion of the latch arm at one end thereof. The link has a foot portion at the other end of the body extending in a generally perpendicular direction from the body. The foot portion is releasably engageable with the dead bolt for selectively moving the dead bolt from its retracted position to its extended position upon movement of the latch arm from its first position to its second position.Type: GrantFiled: June 3, 1996Date of Patent: October 14, 1997Assignee: Schlage Lock CompanyInventors: Jon M. Smallegan, L. C. Derek Chamberlain, Dario L. Pompeii
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Patent number: 5492380Abstract: A door latch operating assembly is capable of rotating a door latch arm between a first locked position for locking a door in a closed position and a second unlocked position for unlocking the door. The latch operating assembly includes a lock platform and a handle having a gripper portion which is grasped by a person's hand for rotating the handle, and a shaft portion attached to the gripper portion and extending therefrom through an opening in the lock platform. A driver cam has a housing which receives the shaft portion of the handle, and at least one wing member extending laterally outwardly from one side of the housing. The wing member has an upwardly facing engaging surface for engaging a link which is linearly movable with respect to the lock platform. The link has a bottom edge portion with a downwardly facing engaging surface which bears against the upwardly facing engaging surface of the wing member of the driver cam, and a top edge portion with an upwardly facing engaging surface.Type: GrantFiled: December 27, 1994Date of Patent: February 20, 1996Assignee: Schlage Lock CompanyInventors: Jon M. Smallegan, L. C. Derek Chamberlain, Dario Pompeii
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Patent number: 5476295Abstract: A door handle mounting assembly capable of being mounted on a door includes a lock platform having an opening formed therein and a handle mounted on the lock platform without the need of mechanical fasteners, staking or welding. More specifically, the handle has a gripper portion which is grasped by a person's hand for turning the handle, and a shaft portion which is attached at one of its ends to the gripper portion. The shaft portion extends through the opening of the lock platform and has a circumferential groove formed therein. A retaining collar having an annular wall is positioned to engage the lock platform, the collar having an inwardly projecting annular ring connected to the annular wall. The assembly also includes a driver cam having a housing with a hollow boss extending through the opening of the lock platform along a longitudinal axis.Type: GrantFiled: November 28, 1994Date of Patent: December 19, 1995Assignee: Schlage Lock CompanyInventors: Jon M. Smallegan, L. C. Derek Chamberlain, Dario Pompeii
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Patent number: D411732Type: GrantFiled: June 19, 1998Date of Patent: June 29, 1999Assignee: Schlage Lock CompanyInventor: L. C. Derek Chamberlain