Patents by Inventor Robin Stevenson

Robin 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).

  • Publication number: 20050115942
    Abstract: A method of joining a pair of overlapping workpieces, the method includes: inserting a filler material between the pair of overlapping workpieces; applying a pressure to at least one of the workpieces so that the filler material is crushed; and joining the two workpieces together in a region defined by the filler material. A welded joint includes: a pair of overlapping workpieces; and a filler material that is made from a material whose comparability has been established by the American Welding Society, and the filler material is a porous material.
    Type: Application
    Filed: December 1, 2003
    Publication date: June 2, 2005
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Publication number: 20050110236
    Abstract: A step apparatus for a vehicle having a door and a rocker panel includes a step disposed at and in operable communication with the door, wherein the step has a retracted position in response to the door being closed and a deployed position in response to the door being at least partially open. The vehicle has a first ground clearance in response to the door being closed and the step retracted and a second ground clearance in response to the door being open and the step deployed. The first ground clearance, which is defined by the vehicle and is independent of the step apparatus, is equal to or greater than the second ground clearance.
    Type: Application
    Filed: November 24, 2003
    Publication date: May 26, 2005
    Inventor: Robin Stevenson
  • Patent number: 6896462
    Abstract: A multi-part, self-drilling, self-tapping fastener with on board, internal chambered adhesive for, permanently connecting a plurality of parts at an overlaid joint thereof having access from one side. The fastener, that drills its own hole through the joint and taps its own threads for mechanically connecting the parts and subsequently extrudes the adhesive under pressure for optimized joint adhesive infiltration and bonding area for maximizing joint strength. The mechanical fastener holds the parts together eliminating the requirement for holding with auxiliary fixtures allowing the parts to be finished and painted during adhesive cure.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: May 24, 2005
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Patent number: 6892924
    Abstract: A friction stir rivet is rotated in a precessing motion and driven through a first fusible workpiece into an engaged second fusible workpiece, causing local portions of the first and second workpieces to plasticize. When the rivet is driven through the first workpiece and into the second workpiece, rotation is stopped and the plasticized material solidifies around the rivet creating an enlarged weld joining the metal workpiece and encompassing the rivet, which provides additional mechanical strength.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 17, 2005
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Patent number: 6883699
    Abstract: A friction stir rivet is rotated and driven through a first fusible workpiece into an engaged second fusible workpiece, causing local portions of the first and second workpieces to plasticize. A slideable cap contacts the exposed surface of the first workpiece shortly after the process begins. The contact causes the cap to act as a retaining element, limiting the escape of plasticized material from stir site. Once the rivet is driven into the first and second workpieces, rotation ceases and the plasticized material hardens around the rivet. A weld is thus created, joining the workpieces and encompassing the rivet, which provides additional mechanical strength.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: April 26, 2005
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Patent number: 6868597
    Abstract: Mechanical and adhesive charged blind fasteners have an annular one way flat or O-ring seal mounted at one end of a cylindrical rivet body sealingly engaged with an axially extending mandrel stem to provide a torodial chamber. The body has radial adhesive-extruding openings therethrough around which a vacuum may be established for initial adhesive charging purposes. For charging, the seal is deflected by the force of a flow of adhesive from a supply responding to the establishment of a positive pressure differential between the supply and the exterior of the body. With the torodial chamber opened, viscous adhesive readily flows therein from the supply. After being filled, the vacuum is terminated and the seal naturally recovers and closes the body to confine the adhesive therein. Adhesive charging can be achieved by other mechanisms that impress a load on the supply to effect seal opening.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: March 22, 2005
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang, Jessica A. Schroeder
  • Publication number: 20050058521
    Abstract: A multi-part, self-drilling, self-tapping fastener with on board, internal chambered adhesive for, permanently connecting a plurality of parts at an overlaid joint thereof having access from one side. The fastener, that drills its own hole through the joint and taps its own threads for mechanically connecting the parts and subsequently extrudes the adhesive under pressure for optimized joint adhesive infiltration and bonding area for maximizing joint strength. The mechanical fastener holds the parts together eliminating the requirement for holding with auxiliary fixtures allowing the parts to be finished and painted during adhesive cure.
    Type: Application
    Filed: September 17, 2003
    Publication date: March 17, 2005
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Patent number: 6866318
    Abstract: A beverage container holder for a vehicle is disclosed. The holder includes an air vent portion, and a beverage container support portion movably but not removably disposed at the vent portion. The support portion has a first position arranged to permit air passage through the vent portion and the support portion in the absence of a beverage container, and a second position arranged to permit air passage through the vent portion and to hold a beverage container.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: March 15, 2005
    Assignee: General Motors Corporation
    Inventor: Robin Stevenson
  • Publication number: 20050042058
    Abstract: A friction stir rivet is rotated and driven through a first fusible workpiece into an engaged second fusible workpiece, causing local portions of the first and second workpieces to plasticize. A slideable cap contacts the exposed surface of the first workpiece shortly after the process begins. The contact causes the cap to act as a retaining element, limiting the escape of plasticized material from stir site. Once the rivet is driven into the first and second workpieces, rotation ceases and the plasticized material hardens around the rivet. A weld is thus created, joining the workpieces and encompassing the rivet, which provides additional mechanical strength.
    Type: Application
    Filed: September 28, 2004
    Publication date: February 24, 2005
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Publication number: 20050019131
    Abstract: This invention provides a design of an adhesive encapsulated blind rivet for joining an assembly of overlying parts having an accessible side and an inaccessible side. The rivet comprises a rivet head and tubular rivet body. A mandrel is inserted through the open end of the tubular rivet body and through a mandrel hole in the rivet head. A mandrel head engages the end of the tubular body. The tubular body is filled with a mass of latent adhesive around the mandrel. The rivet body is longer than the thickness of the parts to be joined to accommodate a substantial amount of adhesive for expulsion through holes in the rivet body located within the thickness of the assembled parts. The portion of the rivet body extending beyond the blind side of the assembled parts is weakened in a pattern of corrugations or other bands for folding of the end of the tubular body in setting the blind side of the rivet and expelling the larger quantity of adhesive against and between the riveted parts.
    Type: Application
    Filed: July 22, 2003
    Publication date: January 27, 2005
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Patent number: 6827386
    Abstract: A tailgate assembly is provided for use with a utility vehicle having a cargo area formed by first and second sidewalls and a bed floor, with a tailgate opening at a rear end of the cargo area. The tailgate assembly includes a tailgate positioned in the tailgate opening. The tailgate is pivotally connected to the sidewalls along upper and lower axes to facilitate pivotal movement about the lower axis to a lowered position extending the bed floor, and pivotal movement about the upper axis to a raised position. At least one load assist mechanism is connected to the tailgate to provide a force to assist pivotal movement to the raised position.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: December 7, 2004
    Assignee: General Motors Corporation
    Inventor: Robin Stevenson
  • Publication number: 20040222656
    Abstract: A tailgate assembly is provided for use with a utility vehicle having a cargo area formed by first and second sidewalls and a bed floor, with a tailgate opening at a rear end of the cargo area. The tailgate assembly includes a tailgate positioned in the tailgate opening. The tailgate is pivotally connected to the sidewalls along upper and lower axes to facilitate pivotal movement about the lower axis to a lowered position extending the bed floor, and pivotal movement about the upper axis to a raised position. At least one load assist mechanism is connected to the tailgate to provide a force to assist pivotal movement to the raised position.
    Type: Application
    Filed: May 8, 2003
    Publication date: November 11, 2004
    Inventor: Robin Stevenson
  • Patent number: 6814531
    Abstract: The present invention is a self-piercing rivet wherein the hollow shell has an external axial asymmetry wherein the asymmetry is with respect to the axis of rotation of the hollow shell. Once installed in a stack of sheets, the asymmetric self-piercing rivet prevents relative sheet rotation of the sheets relative to the axis because of rotational interference caused by the external axial asymmetry of the hollow shell.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: November 9, 2004
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Publication number: 20040218990
    Abstract: Mechanical and adhesive charged blind fasteners have an annular one way flat or O-ring seal mounted at one end of a cylindrical rivet body sealingly engaged with an axially extending mandrel stem to provide a torodial chamber. The body has radial adhesive-extruding openings therethrough around which a vacuum may be established for initial adhesive charging purposes. For charging, the seal is deflected by the force of a flow of adhesive from a supply responding to the establishment of a positive pressure differential between the supply and the exterior of the body. With the torodial chamber opened, viscous adhesive readily flows therein from the supply. After being filled, the vacuum is terminated and the seal naturally recovers and closes the body to confine the adhesive therein. Adhesive charging can be achieved by other mechanisms that impress a load on the supply to effect seal opening.
    Type: Application
    Filed: April 29, 2003
    Publication date: November 4, 2004
    Inventors: Robin Stevenson, Pei-Chung Wang, Jessica A. Schroeder
  • Patent number: 6805393
    Abstract: A rear closure assembly for use with a vehicle includes a door having first and second handles for pivoting the door about first and second vertical pivot axes. Latches on the door are engageable with strikers on the vehicle. The latches and strikers form the first and second vertical pivot axes. The latches are disengageable by the handles to selectively pivot the door about one of the vertical pivot axes.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: October 19, 2004
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Jeffrey Lane Konchan, Richard J Lange
  • Patent number: 6802682
    Abstract: The present invention is a self-piercing rivet wherein the hollow shell has an external spiraling, wherein the spiraling is with respect to the axis of rotation of the hollow shell. Once installed in a stack of sheets, the spiraling prevents the riveted sheets from mutually separating and the rivet loosening with respect to the sheets.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: October 12, 2004
    Assignee: General Motors Corporation
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Publication number: 20040194284
    Abstract: A blind rivet system including a number of parts to be joined that have aligned holes. A tubular rivet body is disposed in the aligned holes and includes a rivet head portion and a sleeve portion. The head portion and sleeve portion include a longitudinal bore. A mandrel having a head portion greater in diameter than the bore and a shaft portion is disposed within the longitudinal bore. An adhesive is disposed in an annular space defined by the interior surface of the bore and an exterior surface of the shaft portion. An installation tool having a seal intersects with the rivet head portion such that when the head portion is drawn within the bore during installation, the adhesive is maintained within the tubular rivet body and extruded from the annular space to a region between faying surfaces of the parts to be joined.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 7, 2004
    Inventors: Pei-Chung Wang, Robin Stevenson
  • Publication number: 20040170490
    Abstract: A rivet and method for riveting metal members, and particularly, metal sheets is disclosed. The apparatus includes a rivet assembly for driving a piercing rivet into stacked metal sheets and a die for assisting in supporting the sheets during driving of the rivet and for assisting in securing the rivets to the sheets. The rivet of the invention includes an adhesive that is forced through passages in the rivet for assisting in fastening the rivet to the sheets and for assisting in fastening the sheets to each other with greater strength.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 2, 2004
    Applicant: GENERAL MOTORS CORPORATION.
    Inventors: Pei-Chung Wang, Daniel B. Hayden, Robin Stevenson
  • Publication number: 20040129762
    Abstract: A friction stir rivet is rotated and driven through a first fusible workpiece into an engaged second fusible workpiece, causing local portions of the first and second workpieces to plasticize. A slideable cap contacts the exposed surface of the first workpiece shortly after the process begins. The contact causes the cap to act as a retaining element, limiting the escape of plasticized material from stir site. Once the rivet is driven into the first and second workpieces, rotation ceases and the plasticized material hardens around the rivet. A weld is thus created, joining the workpieces and encompassing the rivet, which provides additional mechanical strength.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 8, 2004
    Inventors: Robin Stevenson, Pei-Chung Wang
  • Publication number: 20040119599
    Abstract: A seat belt status monitoring system for use with one or more seat belts of an automotive vehicle. The system includes a status monitor incorporated into the seat belt buckle and has a receiver and operator signaling device located in the instrument panel. The status monitor utilizes a piezoelectric element to generate an electrical signal that is fed to a transmitter to generate a wireless signal from the buckle. A mechanical sensing member is used to activate the piezoelectric element to generate its electrical signal by imparting a mechanical force on the piezoelectric during insertion and removal of the seat belt tongue from the buckle. A microswitch in the buckle is used by the transmitter to determine whether the seat belt is latched or unlatched, and this information is conveyed by the transmitted wireless signal.
    Type: Application
    Filed: December 20, 2002
    Publication date: June 24, 2004
    Inventors: Robin Stevenson, Clark E. McCall