Patents by Inventor Mark Carifa

Mark Carifa 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).

  • Dual stage railroad hopper car door actuating mechanism
    Patent number: 8127688
    Abstract: A mechanism for controlling opening of doors on a hopper car underside. The mechanism includes a pair of stationary hook assemblies located outboard of a discharge opening and having a proximal end affixed to the hopper car and a distal free end. Each hook assembly includes a locking cavity bounded by a cam locking surface and a distal slide surface. Included also is a pair of locking cam assemblies having an upper and lower cam surface matable with the hook cam locking assembly and having a slot. An elongate member has ends affixed to the pair of locking cam assemblies and extends through each of the annular end bearings. A pair of annular end bearings is disposed adjacent to the locking cam assemblies and each affixed to a door.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: March 6, 2012
    Assignee: D.A. International Casting, Inc.
    Inventor: Mark Carifa
  • Dual Stage Railroad Hopper Car Door Actuating Mechanism
    Publication number: 20100251925
    Abstract: A mechanism for controlling opening of doors on a hopper car underside. The mechanism includes a pair of stationary hook assemblies located outboard of a discharge opening and having a proximal end affixed to the hopper car and a distal free end. Each hook assembly includes a locking cavity bounded by a cam locking surface and a distal slide surface. Included also is a pair of locking cam assemblies having an upper and lower cam surface matable with the hook cam locking assembly and having a slot. An elongate member has ends affixed to the pair of locking cam assemblies and extends through each of the annular end bearings. A pair of annular end bearings is disposed adjacent to the locking cam assemblies and each affixed to a door.
    Type: Application
    Filed: February 19, 2010
    Publication date: October 7, 2010
    Applicant: D.A. INTERNATIONAL CASTING, INC.
    Inventor: Mark Carifa