Patents by Inventor Ernst K. Mitchell
Ernst K. Mitchell 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: 10400477Abstract: An electronic deadbolt operator for a deadbolt lockset comprises an electronic actuator that rotates a powered driver and a follower that has a lost motion connection with the powered driver, enabling the follower to rotate with the powered driver when the follower is inside its range of travel, and enabling the powered driver to rotate freely of the follower after the follower is pushed to a travel limit. The follower is mounted to a connector driver, which drives the deadbolt, to toggle between two oppositely-disposed off-center positions relative to the connector driver. In one off-center position, only clockwise rotation of the powered driver is operative to rotate the follower. In the opposite position, only counterclockwise rotation of the powered driver is operative to rotate the follower. The interaction between the powered driver, the follower, and stops causes the follower to toggle to an opposite position after hitting a stop.Type: GrantFiled: February 16, 2016Date of Patent: September 3, 2019Assignee: Townsteel, Inc.Inventors: Charles W. Moon, Ernst K. Mitchell, Sybor Ma
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Publication number: 20170122007Abstract: An electronic deadbolt operator for a deadbolt lockset comprises an electronic actuator that rotates a powered driver and a follower that has a lost motion connection with the powered driver, enabling the follower to rotate with the powered driver when the follower is inside its range of travel, and enabling the powered driver to rotate freely of the follower after the follower is pushed to a travel limit. The follower is mounted to a connector driver, which drives the deadbolt, to toggle between two oppositely-disposed off-center positions relative to the connector driver. In one off-center position, only clockwise rotation of the powered driver is operative to rotate the follower. In the opposite position, only counterclockwise rotation of the powered driver is operative to rotate the follower. The interaction between the powered driver, the follower, and stops causes the follower to toggle to an opposite position after hitting a stop.Type: ApplicationFiled: February 16, 2016Publication date: May 4, 2017Inventors: CHARLES W. MOON, ERNST K. MITCHELL, SYBOR MA
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Patent number: 7051561Abstract: A mortise lockset apparatus (10) that includes a retractable bolt (20) movably supported within a case (12). A handle (18) is pivotally supported on a hub (16) supported in the case, the hub being operably connected to the retractable bolt. The bolt is retracted by turning the door handle. A lock-out mechanism (22) is configured to prevent the handle from being turned when the lock-out mechanism is in an engaged position. The handle lock-out mechanism also includes a cam (29) movably supported in the case and operably connected to a motor (30). A sliding stop (34) is movably supported in the case and is engageable with the handle hub to prevent the handle hub and the handle from turning. The sliding stop is also engageable with a cam surface (40) of the cam. The motor is configured to move the sliding stop by rotating the cam. The cam rotational axis (42) is disposed between diametrically opposed portions of the cam surface to minimize space requirements for the assembly.Type: GrantFiled: December 8, 2000Date of Patent: May 30, 2006Assignee: Computerized Security Systems, Inc.Inventors: Charles W. Moon, Ernst K. Mitchell, Mohamad A. Khalil, John J. Kimes
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Publication number: 20040045330Abstract: A mortise lockset apparatus (10) that includes a retractable bolt (20) movably supported within a case (12). A handle (18) is pivotally supported on a hub (16) supported in the case, the hub being operably connected to the retractable bolt. The bolt is retracted by turning the door handle. A lock-out mechanism (22) is configured to prevent the handle from being turned when the lock-out mechanism is in an engaged position. The handle lock-out mechanism also includes a cam (29) movably supported in the case and operably connected to a motor (30). A sliding stop (34) is movably supported in the case and is engageable with the handle hub to prevent the handle hub and the handle from turning. The sliding stop is also engageable with a cam surface (40) of the cam. The motor is configured to move the sliding stop by rotating the cam. The cam rotational axis (42) is disposed between diametrically opposed portions of the cam surface to minimize space requirements for the assembly.Type: ApplicationFiled: October 23, 2003Publication date: March 11, 2004Inventors: Charles W. Moon, Ernst K. Mitchell, Mohamad A. Khalil, John J. Kimes
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Patent number: 4391204Abstract: A security cabinet with a coin operated key-lock has the entire locking system including the coin box and a tamper detector alarm mounted inside the cabinet door. The lock cylinder of the cabinet key-lock is mounted on the latch mechanism and accessable at the front panel of the door. The lock cylinder can be removed and replaced by use of a master key with the door in a locked condition. The key-lock has a cam for operating the latch bolt and a coin detector, also mounted in the door, includes a detaining lever for blocking movement of the latch bolt unless a valid coin is deposited. The coin box is also mounted in the door. A rear panel of the door can be opened for servicing of the latch mechanism, coin box and the tamper detector.Type: GrantFiled: September 9, 1980Date of Patent: July 5, 1983Assignee: Safekeeper Systems, Inc.Inventors: Ernst K. Mitchell, Richard H. Terry
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Patent number: D519021Type: GrantFiled: May 4, 2004Date of Patent: April 18, 2006Assignee: Computerized Security Systems, Inc.Inventors: Dan Boulware, Ernst K. Mitchell, Charles W. Moon
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Patent number: D533047Type: GrantFiled: August 12, 2005Date of Patent: December 5, 2006Assignee: Computerized Security Systems, Inc.Inventors: Michael J. Wright, Charles W. Moon, Ernst K. Mitchell, Dale Mathias
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Patent number: D533762Type: GrantFiled: August 12, 2005Date of Patent: December 19, 2006Assignee: Computerized Security Systems, Inc.Inventors: Michael J. Wright, Charles W. Moon, Ernst K. Mitchell, Dale Mathias
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Patent number: D533763Type: GrantFiled: August 12, 2005Date of Patent: December 19, 2006Assignee: Computerized Security Systems, Inc.Inventors: Michael J. Wright, Charles W. Moon, Ernst K. Mitchell, Dale Mathias
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Patent number: D569221Type: GrantFiled: January 30, 2007Date of Patent: May 20, 2008Assignee: Computerized Security Systems, Inc.Inventors: Ernst K. Mitchell, Glenn L. Peacock
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Patent number: D601877Type: GrantFiled: January 30, 2007Date of Patent: October 13, 2009Assignee: Computerized Security Systems, Inc.Inventors: Ernst K. Mitchell, Glenn L. Peacock