Patents Assigned to ZefTek, Inc.
  • Patent number: 6136240
    Abstract: A self-lubricating plastic center plate assembly bearing liner for placement between a body bolster center plate and a truck bolster center plate of a center plate assembly in a railroad car, wherein the liner is configured to substantially mate with the center plates and includes a body having an integrally formed electrically conductive ring of plastic material which provides electrical continuity between the plates in the center plate assembly.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 24, 2000
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, Richard F. Murphy
  • Patent number: 6050199
    Abstract: A sealing device for a hatch cover closing a hatch on a railcar, wherein the hatch cover includes a pocket for receiving a gasket, and the pocket includes projections mating with recesses on the gasket or projections on the gasket mating with recesses in the pocket for removably retaining the gasket in the pocket.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: April 18, 2000
    Assignee: Zeftek, Inc.
    Inventors: John D. Anderson, Walter J. Peach, Jr.
  • Patent number: 5975818
    Abstract: A grating lift pad for mounting on the free end or edge of a grating section on the floor of an auto rack railroad car which lifts the grating section off the floor to reduce wear and rusting of the floor caused by movement and vibration of the grating during train movement.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: November 2, 1999
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, Walter J. Peach, Jr.
  • Patent number: 5960980
    Abstract: A vented hatch cover assembly for a railroad hopper car including top and bottom members having substantially rigid and somewhat dome-shaped bodies which are divided into four quadrants wherein each quadrant includes coacting baffle members extending from the bodies of the top and bottom members which define a plurality of circuitous air passageways to allow air flow into and out of the hopper car while restricting moisture and other contaminants from entering the car. An improved hatch cover lock mechanism for securing a vented or non-vented cover to the hatch is easily adjustable to provide a tight seal between the cover and hatch, and provides a safe controlled opening of a non-vented cover. An improved seal or gasket is arranged between the cover and hatch.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: October 5, 1999
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, John D. Anderson, Walter J. Peach, Jr.
  • Patent number: 5924654
    Abstract: A railroad car sensing system for monitoring car performance by detecting vertical, transverse and/or longitudinal car truck movements, which includes one or more accelerometers mounted on a plastic brake beam guide for generating and sensing car truck movement signals to a computer for processing.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: July 20, 1999
    Assignee: Zeftek, Inc.
    Inventor: John D. Anderson
  • Patent number: 5908001
    Abstract: A self-lubricating plastic center plate assembly bearing liner for placement between a body bolster center plate and a truck bolster center plate of a center plate assembly in a railroad car, wherein the liner is configured to substantially mate with the center plates and includes a body having an integrally formed electrically conductive ring of plastic material which provides electrical continuity between the plates in the center plate assembly.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: June 1, 1999
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, Richard F. Murphy
  • Patent number: 5738285
    Abstract: A secondary seal in the form of a plug member insertable in the open end of a pneumatic discharge nozzle of a covered hopper car carrying granular material, such as plastic pellets, wherein the plug member includes means for maintaining the pellets in spaced relation to the open end of the nozzle to prevent spillage when the plug member is removed, and having retaining means connecting the plug member to the nozzle when it is removed from the open end of the nozzle.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: April 14, 1998
    Assignee: Zeftek, Inc.
    Inventor: John D. Anderson
  • Patent number: 5736088
    Abstract: An improved plastic knuckle pin for a coupler on a railway car and a method of making the improved plastic knuckle pin whereby the improved plastic knuckle pin has a substantially uniform material matrix and the method of making the pin increases uniformity in the material by increasing the surface cooling area which decreases air and moisture pockets in the material during the molding process.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: April 7, 1998
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, John D. Anderson
  • Patent number: 5701825
    Abstract: A device for closing the gap between adjacent sidewall panels in an auto rack railroad car in the form of a generally H-shaped elongated plastic member grippingly engaging the panels and closing the gap to prevent the movement of air and precipitation through the gap. The device may be made as a one-piece or two-piece unit.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: December 30, 1997
    Assignee: Zeftek, Inc.
    Inventor: Walter J. Peach, Jr.
  • Patent number: 5694859
    Abstract: A hole covering device attached to the sidewall panels or screens in an auto rack car to prevent the direct passage of air and air-carried contaminants into the auto rack car through the multiplicity of holes in the screens to prevent damage to the finishes of newly manufactured vehicles being transported. The hole covering device includes a non-opaque plastic covering panel which is sized and adapted to be mounted on the interior surface of the screen by a plurality of button fasteners to cover a significant number of the holes in the screen. The covering panel permits light into the car through the covering panel and does not significantly inhibit the ventilation of the vehicle exhaust gases during loading and unloading of the vehicles.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: December 9, 1997
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, Michael K. Murphy, Walter J. Peach, Jr.
  • Patent number: 5687650
    Abstract: A gap closing device for closing the air gaps between the sidewall panels and the floor and/or the gaps between the sidewall panels and auxiliary floor panels or plates in an auto rack railroad car comprising an elongated strip of flexible extruded plastic material having a spine adapted to extend through the gap, a flap centrally connected to one end of the spine for closing the gap, and fins extending from the spine to lock the device in gap closing position. The fins may include a plurality of locking and/or pressure fins.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: November 18, 1997
    Assignee: Zeftek, Inc.
    Inventors: Richard F. Murphy, Michael K. Burke
  • Patent number: 5682964
    Abstract: A brake beam wear plate for mounting in brake beam guide brackets of railroad car truck side frames having side walls of varying thicknesses to define a slideway for the brake beam lugs providing a sloppy fit and a path of movement to obtain the ideal clasping angle and alignment for the brake shoes with the wheels, and thereby produce better train handling during braking, and uniform wearing of the shoes to enhance shoe life and reduce maintenance.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: November 4, 1997
    Assignee: Zeftek, Inc.
    Inventor: Richard F. Murphy
  • Patent number: 5669745
    Abstract: A bumper system for a movable deck in an intermodal auto carrier or trailer wherein the bumper system is mounted on the deck and is foldable against the deck or opened to a position for protecting the auto doors against damage when opening the doors for ingress and egress of a driver during loading and unloading operations.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: September 23, 1997
    Assignee: Zeftek, Inc.
    Inventor: John D. Anderson
  • Patent number: 5630519
    Abstract: An improved plastic knuckle pin for a coupler on a railway car and a method of making the improved plastic knuckle pin whereby the improved plastic knuckle pin has a substantially uniform material matrix and the method of making the pin increases uniformity in the material by increasing the surface cooling area which decreases air and moisture pockets in the material during the molding process.
    Type: Grant
    Filed: March 27, 1996
    Date of Patent: May 20, 1997
    Assignee: Zeftek, Inc.
    Inventors: Michael K. Burke, John D. Anderson
  • Patent number: 5598936
    Abstract: A coupler carrier wear plate for a long-shank coupler which includes a mild steel base plate weldable to the carrier, a manganese steel wear plate engageably supporting the coupler shank and connected to the base plate by a resilient bonding material. The bonding material is of a thickness to accommodate flatness variations encountered on a coupler carrier.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: February 4, 1997
    Assignee: Zeftek, Inc.
    Inventor: Richard F. Murphy
  • Patent number: 5579697
    Abstract: An improved gap sealing device for covering the gaps between horizontally extending and vertically spaced apart sidewall panels on auto rack railroad cars and between sidewall panels and supporting members. The gap sealing device is a single piece of extruded plastic having a head attachable to a flange of a sidewall panel and a tail or flap for biasing against the vertically adjacent sidewall panel, and a body that covers the gap to prevent air passage. The head includes inside and outside walls where the inside wall is hingedly attached to the outside wall by a live hinge and movable between open and closed positions to facilitate attachment of the head to the flange of the sidewall panel. A spring clip is placed over the inside and outside walls of the head to maintain and lock the gap sealing device on the flange of the sidewall panel. The gap sealing device may also be used to close the gaps between the sidewall panels and the roof, the floor, and vertical posts of the auto rack railroad car.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: December 3, 1996
    Assignee: Zeftek, Inc.
    Inventor: Michael K. Burke
  • Patent number: 5415108
    Abstract: A gap sealer for covering the gaps between horizontally extending and vertically spaced apart sidewall panels on auto rack railroad cars and between sidewall panels and the floor, roof or vertical posts. The gap sealer is a single piece of extruded plastic having a head attachable to a flange of a sidewall panel and a tail or flap biasing against the flange of a vertically adjacent sidewall panel, the floor, roof or post, such that the body of the gap sealer covers the gap to prevent air passage. The gap sealer may also include a bumper which protects vehicle doors from contacting the sidewall panels and risking damage. An individual bumper may also be used to protect vehicle doors, and be attached to a sidewall panel by a unique fastener.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: May 16, 1995
    Assignee: Zeftek, Inc.
    Inventors: Richard F. Murphy, Michael K. Burke, Michael K. Murphy
  • Patent number: 5239933
    Abstract: A gap sealer for covering the gaps between horizontally extending and vertically spaced apart sidewall panels on auto rack railroad cars and between sidewall panels and the floor, roof or vertical posts. The gap sealer is a single piece of extruded plastic having a head attachable to a flange of a sidewall panel and a tail or flap biasing against the flange of a vertically adjacent sidewall panel, the floor, roof or post, such that the body of the gap sealer covers the gap to prevent air passage. The gap sealer may also include a bumper which protects vehicle doors from contacting the sidewall panels and risking damage. An individual bumper may also be used to protect vehicle doors, and be attached to a sidewall panel by a unique fastener.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: August 31, 1993
    Assignee: Zeftek, Inc.
    Inventors: Richard F. Murphy, Michael K. Burke, Michael K. Murphy
  • Patent number: 5145076
    Abstract: A plastic knuckle pin for a coupler on a railway car which accepts bending fatigue, eliminates rust or corrosion, and reduces the coefficient of friction during opening and closing the coupler. The pin also protects the integrity of the coupler body and the knuckle to reduce coupler maintenance and further reduces the weight of the railway car and facilitates the use of a self-locking feature.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: September 8, 1992
    Assignee: Zeftek, Inc.
    Inventors: Richard F. Murphy, Michael K. Burke
  • Patent number: 4917021
    Abstract: A door finger guide for doors an auto rack cars to guide the upper ends of the doors along an upper track during opening and closing operations. The door finger guide includes a metal supporting member or base plate having a lower end secured to the door and an upper end in alignment with the upper door track. Plastic bearing means is secured to the upper ends of the door guides which are mounted in opposing relation for coaction with the track. The door guides and plastic bearing portions are diminished so that the tolerance with the track is minimized to reduce vibration in the door and all components associated with the door and located below the guides.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 17, 1990
    Assignee: Zeftek, Inc.
    Inventor: Michael K. Murphy