Patents by Inventor David John Langford
David John Langford 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: 10816074Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess; and whereby the lock mechanism provides a sloping engagement surface for the pin, either side of the entry passage.Type: GrantFiled: February 19, 2016Date of Patent: October 27, 2020Assignees: GOODRICH ACTUATION SYSTEMS LIMITED, GOODRICH AEROSPACE SERVICES PRIVATE LIMITEDInventors: Navaneethakrishnan Pandian, Narendran Muralidharan, David John Langford
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Publication number: 20160245387Abstract: An actuator system comprising a rotatable lock mechanism defining a path for an actuator pin as the actuator is expanded and retracted, wherein the lock mechanism defines an entry passage through which the pin enters as the actuator extends, a guide surface along which the pin travels from the entry passage as the actuator retracts, a locking recess into which the pin is guided by the guide surface, and an exit passage into which the pin is guided as it is caused to leave the lock recess by extension of the actuator and subsequent retraction; whereby a detent surface is provided to prevent the pin returning back into the lock recess when the actuator is extended to cause the pin to leave the lock recess; and whereby the lock mechanism provides a sloping engagement surface for the pin, either side of the entry passage.Type: ApplicationFiled: February 19, 2016Publication date: August 25, 2016Inventors: Navaneethakrishnan Pandian, Narendran Muralidharan, David John Langford
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Patent number: 9140048Abstract: An actuator comprises an actuator output shaft, a rotatable lock formation associated with the output shaft so as to be axially fixed relative thereto, the lock formation defining an entry passage, a lock pocket and an exit passage, a pin positioned for movement relative to the lock formation such that, as the actuator approaches a fully extended position, a part of the pin is received within and passes along the entry passage, and resilient detent means operable such that, once the pin has moved beyond a predetermined position within the entry passage, the resilient detent means prevents return movement of the pin along the entry passage.Type: GrantFiled: May 31, 2012Date of Patent: September 22, 2015Assignee: GOODRICH ACTUATION SYSTEMS LIMITEDInventor: David John Langford
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Publication number: 20120312154Abstract: An actuator comprises an actuator output shaft, a rotatable lock formation associated with the output shaft so as to be axially fixed relative thereto, the lock formation defining an entry passage, a lock pocket and an exit passage, a pin positioned for movement relative to the lock formation such that, as the actuator approaches a fully extended position, a part of the pin is received within and passes along the entry passage, and resilient detent means operable such that, once the pin has moved beyond a predetermined position within the entry passage, the resilient detent means prevents return movement of the pin along the entry passage.Type: ApplicationFiled: May 31, 2012Publication date: December 13, 2012Applicant: Goodrich Actuation Systems LimitedInventor: David John Langford
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Patent number: 8272285Abstract: An actuator comprises an actuator shaft mounted for rotation by a drive shaft, releasable lock means operable to restrict axial movement of the actuator shaft relative to the drive shaft, and an output member co-operating with the actuator shaft such that rotation of the actuator shaft drives the output member for translating movement relative to the actuator shaft.Type: GrantFiled: April 2, 2009Date of Patent: September 25, 2012Assignee: Goodrich Actuation Systems LimitedInventors: Keith Kearns, David John Langford, Timothy Hudson
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Publication number: 20090250552Abstract: An actuator comprises an actuator shaft mounted for rotation by a drive shaft, releasable lock means operable to restrict axial movement of the actuator shaft relative to the drive shaft, and an output member co-operating with the actuator shaft such that rotation of the actuator shaft drives the output member for translating movement relative to the actuator shaft.Type: ApplicationFiled: April 2, 2009Publication date: October 8, 2009Applicant: Goodrich Actuation Systems LimitedInventors: Keith Kearns, David John Langford, Timothy Hudson
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Patent number: 6625973Abstract: A thrust reverser actuator lock mechanism comprising a rotatable shaft, rotation of which in one direction from a rest position drives an associated thrust reverser from a stowed position towards an operative position in use, retractable abutment means having a rest position abutting an element rotatable with the shaft to prevent rotation of the shaft, resilient means urging said abutment means to said rest position, and, mechanical latch means sensitive to the speed of rotation of said shaft for latching said abutment means in a retracted position against the action of said resilient means when the rotational speed of said shaft exceeds a predetermined value.Type: GrantFiled: February 22, 2002Date of Patent: September 30, 2003Assignee: Lucas Industries LimitedInventors: David John Langford, John Herbert Harvey, Tony Jones, Michael Paul Somerfield, Melanie Zoe Brown
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Patent number: 6466141Abstract: A skew detection system for use in sensing the occurrence of a skew condition in a system having a plurality of control surfaces located adjacent one another and which, in use, are driven to move simultaneously and at the same speed as one another, the skew detection system comprising a detector arrangement extending over and movable with the surfaces, between a first location on one of the surfaces and a second location on another of the surfaces, at least part of the detector arrangement being arranged to move in the event that one or more of the surfaces becomes skewed, and a sensor arranged to permit a change in the position of the said part of the detector arrangement to be detected. In one embodiment, a skew condition can be sensed using two sensors.Type: GrantFiled: September 26, 2000Date of Patent: October 15, 2002Assignee: Lucas Industries LimitedInventors: Richard John McKay, David John Langford, Stephen Harlow Davies