Patents by Inventor Dennis Stevenson

Dennis Stevenson 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: 10786869
    Abstract: A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: September 29, 2020
    Assignee: FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT LLC
    Inventors: Matthew Brestovansky, Dennis Stevenson, Rob Fontichiaro, Mark Niemiec
  • Publication number: 20180354080
    Abstract: A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.
    Type: Application
    Filed: August 21, 2018
    Publication date: December 13, 2018
    Inventors: MATTHEW BRESTOVANSKY, Dennis Stevenson, Rob Fontichiaro, Mark Niemiec
  • Patent number: 10081081
    Abstract: A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: September 25, 2018
    Assignee: FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT LLC
    Inventors: Matthew Brestovansky, Dennis Stevenson, Rob Fontichiaro, Mark Niemiec
  • Publication number: 20160368034
    Abstract: A method of manufacturing a tubular member for an automotive application that includes providing a flat workpiece of a material; forming at least one lance in the flat workpiece; roll-forming the flat workpiece into a tubular configuration; induction welding a seam of the tubular workpiece after the roll-forming; and trimming the tubular workpiece through the lance after welding the seam.
    Type: Application
    Filed: June 8, 2016
    Publication date: December 22, 2016
    Inventors: MATTHEW BRESTOVANSKY, Dennis Stevenson, Rob Fontichiaro, Mark Niemiec
  • Patent number: 8701915
    Abstract: Provided herein is an oil pan plug assembly having an elongated sleeve and a plug member. The elongated sleeve includes first and second ends and defines a longitudinal drain bore therethrough having corresponding first and second end portions, the second end of the sleeve configured to project outwardly from the exterior of the oil pan through an opening in the oil pan disposed about the sleeve, and a securement means for forming a fluid-tight seal through the opening in the oil pan when the sleeve is mounted in the oil pan.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: April 22, 2014
    Inventor: Dennis Stevenson
  • Publication number: 20110284539
    Abstract: The invention relates an oil pan plug assembly comprising an elongated sleeve and a plug member. The elongated sleeve includes first and second ends and defines a longitudinal drain bore therethrough having corresponding first and second end portions, the second end of the sleeve configured to project outwardly from the exterior of the oil pan through an opening in the oil pan disposed about the sleeve, and a securement means for forming a fluid-tight seal through the opening in the oil pan when the sleeve is mounted in the oil pan.
    Type: Application
    Filed: May 24, 2010
    Publication date: November 24, 2011
    Inventor: Dennis Stevenson
  • Patent number: 7848829
    Abstract: Methods and module class objects to configure equipment absences in process plants are disclosed. An example disclosed method of creating a configuration entity for use in configuring a process plant comprises creating a class object representative of a process entity within the process plant that includes a first data structure representative of one or more process elements that make up the process entity; and creating a module object based on the class object that includes a second data structure, the second data structure to include a configurable first indication to represent whether a specific process element that conforms to a first one of the one or more process elements that make up the process entity is absent.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: December 7, 2010
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Mark John Nixon, Larry Oscar Jundt, John Michael Lucas, Dennis Stevenson, Nancy Stevenson, legal representative, Julian Kevin Naidoo, Herschel Odis Koska, II
  • Publication number: 20080188960
    Abstract: Methods and module class objects to configure equipment absences in process plants are disclosed. An example disclosed method of creating a configuration entity for use in configuring a process plant comprises creating a class object representative of a process entity within the process plant that includes a first data structure representative of one or more process elements that make up the process entity; and creating a module object based on the class object that includes a second data structure, the second data structure to include a configurable first indication to represent whether a specific process element that conforms to a first one of the one or more process elements that make up the process entity is absent.
    Type: Application
    Filed: September 29, 2006
    Publication date: August 7, 2008
    Inventors: Mark John Nixon, Larry Oscar Jundt, John Michael Lucas, Dennis Stevenson, Nancy Stevenson, Julian Kevin Naidoo, Herschel Odis Koska
  • Patent number: 7392165
    Abstract: A simulation system attaches to a configuration database for one or more fully configured nodes of a process control system and copies the modules within those nodes into one or more simulation computers as simulation modules. The simulation system includes an algorithm that automatically creates a reference parameter module for each of the copied nodes that stores a reference parameter for each of the inputs, outputs or other references to signals external to the nodes. In the case of the Fieldbus function blocks, the simulation system automatically creates a function block within the simulation workstation in the protocol of the controller node which mimics the operation of the Fieldbus function block, and then creates the simulation system having those mimicked Fieldbus function blocks operating as if they had originally been configured to be in the controller being simulated, instead of within a field device external to the controller.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: June 24, 2008
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Mark Nixon, Terrence Blevins, Dennis Stevenson, Michael Lucas
  • Publication number: 20070061033
    Abstract: A version control system helps to keep track of versions of process plant items that may represent, or be capable of representing, entities in a process plant. The process plant items may comprise, for example, module objects which may be capable of specifically representing process entities of the process plant. These module objects may be created from module class objects which may be capable of generically representing process entities of the process plant. Version data is stored and associated with a module object. The version data may comprise data indicative of a version of a module class object that was used to create the module object. The version data may also comprise data indicative of a version of the module object. Configuration systems, version control systems, viewing systems, debugging systems, run-time monitoring systems, asset management systems, etc., may examine or permit viewing of the version control data associated with an item.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 15, 2007
    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.
    Inventors: J. Lucas, Arthur Webb, Mark Nixon, Larry Jundt, Jian Li, Dennis Stevenson, Michael Ott, Herschel Koska, Robert Havekost
  • Patent number: 7130703
    Abstract: A voter function block, which can be integrated into a function block diagram programming environment in a process plant control or safety system, implements voter logic in conjunction with providing operational and maintenance overrides which may be set to override individual inputs to the voter function block as well as to override the output of the voter function block. The voter function block, which is easy to create, use, test, debug and document, includes one or input limit detection units which detect if a particular redundant input has reached a specified limit indicating a condition within the process plant, an override unit that may be set by a user to override the consideration of that input in the voting function, a voting logic entity that determines if a trip condition exists based on the values of the valid or non-inhibited inputs, and an inhibit block that may used to override the output of the voter logic block during, for example, a startup or other operational condition.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: October 31, 2006
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Robert Havekost, Godfrey Sherriff
  • Patent number: 7043311
    Abstract: A configuration system for a process plant uses module class objects to assist in configuring, organizing and changing the control and display activities within the process plant. Each module class object generically models or represents a process entity, such as a unit, a piece of equipment, a control activity, etc., and may be used to create instances of the object, called module objects, which represent and are tied to specific equipment within the process plant. The module class objects may represent process entities of any desired scope, which means that a single module class object may be used to configure the control and display activities of process entities of any desired scope within the process plant, instead of just at a control module level. In particular, module class objects of a large scope may be used to configure large sections or portions of the process plant, which makes configuration of the process plant easier and less time consuming.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: May 9, 2006
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Mark Nixon, Michael Lucas, Arthur Webb, Herschel Koska, Jian Li, Larry Jundt, Dennis Stevenson, Robert Havekost, Michael Ott
  • Publication number: 20050172258
    Abstract: An apparatus having a programmable processor and a memory for performing a plurality of user-selectable control functions includes a database for storing a plurality of items associated with each of the control functions. The items include, for each function, at least one procedure for performing an action associated with the control function and a specification of at least one state associated with the control function. The apparatus further includes software routines stored on the memory and adapted to be executed by the processor that facilitate selection of a procedure in the database, that access the database and cause performance of the selected procedure to achieve the state specified therein, and that monitor at least one resource associated with the action of the procedure and, based thereon, determine whether the specified state has been achieved.
    Type: Application
    Filed: October 5, 2004
    Publication date: August 4, 2005
    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.
    Inventors: Mark Nixon, Dennis Stevenson, Michael Ott, Stephen Hammack
  • Patent number: 6898468
    Abstract: A cause and effect function block, which can be easily integrated into a function block diagram programming environment in a process plant safety system to implement the cause and effect logic specified by a traditional cause and effect matrix, includes a set of cause inputs and a set of effect outputs. A multiplexer within the cause and effect function block receives each of the cause inputs and is coupled to one or more state machines, with a separate state machine existing for each effect output. The multiplexer decodes each of the cause inputs and, based on the cause inputs and previously identified cause and effect matrix logic, provides a trip signal to one or more of the state machines. Upon receiving a trip signal, a state machine forces an associated effect output into a tripped or safe state.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: May 24, 2005
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Michael Ott, Gary Law, Dennis Stevenson, Robert Havekost, Julian Naidoo, Godfrey R. Sherriff
  • Patent number: 6898542
    Abstract: A process control or safety system within a process plant uses one or more testing blocks to effect the timely and safe operation of on-line testing routines within field devices, such as valves, used in the process control or safety system. These testing blocks, which are easy to implement and to place in the process control or safety system, enable the periodic or on-demand testing of field devices to be integrated into the normal and on-going operation of the process control or safety system without causing scheduling or connection problems and without the need to rely on maintenance or other personnel, thereby providing better monitoring of the operational status of the field devices used within the process control and safety systems.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: May 24, 2005
    Assignee: Fisher-Rosemount Systems, Inc.
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Riyaz Ali, Mark Nixon, Tim Forsythe
  • Publication number: 20050027377
    Abstract: A version control system helps to keep track of versions of process plant items that may represent, or be capable of representing, entities in a process plant. The process plant items may comprise, for example, module objects which may be capable of specifically representing process entities of the process plant. These module objects may be created from module class objects which may be capable of generically representing process entities of the process plant. Version data is stored and associated with a module object. The version data may comprise data indicative of a version of a module class object that was used to create the module object. The version data may also comprise data indicative of a version of the module object. Configuration systems, version control systems, viewing systems, debugging systems, run-time monitoring systems, asset management systems, etc., may examine or permit viewing of the version control data associated with an item.
    Type: Application
    Filed: May 25, 2004
    Publication date: February 3, 2005
    Applicant: FISHER-ROSEMOUNT SYSTEMS, INC.
    Inventors: J. Lucas, Arthur Webb, Mark Nixon, Larry Jundt, Jian Li, Dennis Stevenson, Michael Ott, Herschel Koska, Robert Havekost
  • Publication number: 20040255013
    Abstract: A voter function block, which can be integrated into a function block diagram programming environment in a process plant control or safety system, implements voter logic in conjunction with providing operational and maintenance overrides which may be set to override individual inputs to the voter function block as well as to override the output of the voter function block. The voter function block, which is easy to create, use, test, debug and document, includes one or input limit detection units which detect if a particular redundant input has reached a specified limit indicating a condition within the process plant, an override unit that may be set by a user to override the consideration of that input in the voting function, a voting logic entity that determines if a trip condition exists based on the values of the valid or non-inhibited inputs, and an inhibit block that may used to override the output of the voter logic block during, for example, a startup or other operational condition.
    Type: Application
    Filed: April 8, 2003
    Publication date: December 16, 2004
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Robert Havekost, Godfrey Sherriff
  • Publication number: 20040199351
    Abstract: A process control or safety system within a process plant uses one or more testing blocks to effect the timely and safe operation of on-line testing routines within field devices, such as valves, used in the process control or safety system. These testing blocks, which are easy to implement and to place in the process control or safety system, enable the periodic or on-demand testing of field devices to be integrated into the normal and on-going operation of the process control or safety system without causing scheduling or connection problems and without the need to rely on maintenance or other personnel, thereby providing better monitoring of the operational status of the field devices used within the process control and safety systems.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 7, 2004
    Inventors: Michael G. Ott, Gary Law, Dennis Stevenson, Riyaz Ali, Mark Nixon, Tim Forsythe
  • Publication number: 20040199925
    Abstract: A configuration system for a process plant uses module class objects to assist in configuring, organizing and changing the control and display activities within the process plant. Each module class object generically models or represents a process entity, such as a unit, a piece of equipment, a control activity, etc., and may be used to create instances of the object, called module objects, which represent and are tied to specific equipment within the process plant. The module class objects may represent process entities of any desired scope, which means that a single module class object may be used to configure the control and display activities of process entities of any desired scope within the process plant, instead of just at a control module level. In particular, module class objects of a large scope may be used to configure large sections or portions of the process plant, which makes configuration of the process plant easier and less time consuming.
    Type: Application
    Filed: February 18, 2003
    Publication date: October 7, 2004
    Inventors: Mark Nixon, Michael Lucas, Arthur Webb, Herschel Koska, Jian Li, Larry Jundt, Dennis Stevenson, Robert Havekost, Michael Ott
  • Publication number: 20040193290
    Abstract: A cause and effect function block, which can be easily integrated into a function block diagram programming environment in a process plant safety system to implement the cause and effect logic specified by a traditional cause and effect matrix, includes a set of cause inputs and a set of effect outputs. A multiplexer within the cause and effect function block receives each of the cause inputs and is coupled to one or more state machines, with a separate state machine existing for each effect output. The multiplexer decodes each of the cause inputs and, based on the cause inputs and previously identified cause and effect matrix logic, provides a trip signal to one or more of the state machines. Upon receiving a trip signal, a state machine forces an associated effect output into a tripped or safe state.
    Type: Application
    Filed: March 28, 2003
    Publication date: September 30, 2004
    Inventors: Michael Ott, Gary Law, Dennis Stevenson, Robert Havekost, Julian Naidoo, Godfrey R. Sherriff