Patents by Inventor Jimmy L. Stewart

Jimmy L. Stewart 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: 8991079
    Abstract: Machines are often used to collect and transport materials in a work environment. One of the more common methods of collecting and transporting materials is with a fork having tines. Another common instrument attached to a machine for collecting and transporting materials is a bucket. The present disclosure describes a bucket that engages the tines of a fork, and therefore can be used with a machine that already has a fork attached. The present disclosure also engages with tines of multiple lengths, meaning that the same bucket will engage with forks from different machines. The bucket has first and second side members; a collecting member extending between the first and second side members; and an engagement portion having an engagement surface and a pocket.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Jimmy L. Stewart, Wayne M. Castegnaro, Jr., Ryan P. Shea
  • Patent number: 8944218
    Abstract: A pallet fork includes a frame having a top support tube and a bottom support tube between opposing end plates. A fork bar and a carriage plate are supported by the frame. A fork tine is mounted to the fork bar via a slotted tube. The fork tine includes a vertical leg and a horizontal leg. The slotted tube is at an upper portion of the vertical leg. A locking plate is provided on the top support tube. An upper locking member selectively inserted through a slot in the slotted tube and through one of a plurality of notches to engage the vertical leg of the fork tine with the locking plate and restrict lateral motion of the fork tine. The upper locking member has a head portion with an open point that rests on a top surface of the top support tube.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: February 3, 2015
    Assignee: Caterpillar Inc.
    Inventors: Daniel E. Peschel, Andrew L. Vering, Jimmy L. Stewart, Ryan P. Shea
  • Patent number: 8939701
    Abstract: Machines are often used to collect and transport materials in a work environment. One of the more common methods of collecting and transporting materials is with a fork. The tines of a conventional fork may damage the materials being collected by the machine. Tines are also difficult to attach other work implements to. The disclosed apparatus facilitates collecting material with less resultant damage to the material. The disclosed apparatus also simplifies the connection of other work implements to the machine, in particular, a bucket, by not requiring that the fork first be removed from the machine to attach the bucket. The tine has a base member with a distal end; a roller rotatably coupled to the base member proximate to the distal end; and a part of the roller is elevated above the base member.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 27, 2015
    Assignee: Caterpillar Inc.
    Inventor: Jimmy L. Stewart
  • Publication number: 20140173947
    Abstract: Machines are often used to collect and transport materials in a work environment. One of the more common methods of collecting and transporting materials is with a fork having tines. Another common instrument attached to a machine for collecting and transporting materials is a bucket. The present disclosure describes a bucket that engages the tines of a fork, and therefore can be used with a machine that already has a fork attached. The present disclosure also engages with tines of multiple lengths, meaning that the same bucket will engage with forks from different machines. The bucket has first and second side members; a collecting member extending between the first and second side members; and an engagement portion having an engagement surface and a pocket.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: Caterpillar Inc.
    Inventors: Jimmy L. Stewart, Wayne M. Castegnaro, JR., Ryan P. Shea
  • Publication number: 20140178165
    Abstract: Machines are often used to collect and transport materials in a work environment. One of the more common methods of collecting and transporting materials is with a fork. The tines of a conventional fork may damage the materials being collected by the machine. Tines are also difficult to attach other work implements to. The disclosed apparatus facilitates collecting material with less resultant damage to the material. The disclosed apparatus also simplifies the connection of other work implements to the machine, in particular, a bucket, by not requiring that the fork first be removed from the machine to attach the bucket.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Applicant: Caterpillar Inc.
    Inventor: Jimmy L. Stewart
  • Publication number: 20130092478
    Abstract: A pallet fork includes a frame having a top support tube and a bottom support tube between opposing end plates. A fork bar and a carriage plate are supported by the frame. A fork tine is mounted to the fork bar via a slotted tube. The fork tine includes a vertical leg and a horizontal leg. The slotted tube is at an upper portion of the vertical leg. A locking plate is provided on the top support tube. An upper locking member selectively inserted through a slot in the slotted tube and through one of a plurality of notches to engage the vertical leg of the fork tine with the locking plate and restrict lateral motion of the fork tine. The upper locking member has a head portion with an open point that rests on a top surface of the top support tube.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: Caterpillar Inc.
    Inventors: Daniel E. Peschel, Andrew L. Vering, Jimmy L. Stewart, Ryan P. Shea
  • Patent number: 4684887
    Abstract: An apparatus, for use in conjunction with a high voltage tester, for confirming that the high voltage test has been successfully completed. The apparatus detects currents caused by the application of a high test voltage to an article under test. If the detected current is not present throughout a predetermined test time interval, the apparatus provides a retest indication and alarm, signifying that a malfunction in the test has occurred. If the current is detected throughout the predetermined time period, a test complete indicator is activated, signifying the successful completion of the high voltage test.
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: August 4, 1987
    Assignee: General Battery Corporation
    Inventor: Jimmy L. Stewart
  • Patent number: 4356239
    Abstract: An apparatus and method for the sequential testing of series connected lead-acid storage batteries for short circuits between plates of opposite polarity within a cell and for electrical continuity between cells of said battery is disclosed. The apparatus comprises power and control circuitry working in conjunction with a terminal block containing a plurality of pins which are connected to the intercell lugs on the positive and negative straps which when welded together form the intercell connections within the battery. Within this block, the pins are partially wired together so that if there is complete continuity of the intercell welds a continuous electrical circuit is formed. Midway in the electrical wiring is a blocking diode which acts to permit the passage of a DC test current in only one direction. If a positive polarity voltage is impressed on the cathode side of the diode, current will only flow if there is a short circuit between plates of opposite polarity within the cell.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: October 26, 1982
    Assignee: General Battery Corporation
    Inventor: Jimmy L. Stewart
  • Patent number: 4282292
    Abstract: An apparatus and method for the sequential testing of series connected lead-acid storage batteries for short circuits between plates of opposite polarity within a cell and for electrical continuity between cells of said battery is disclosed. The apparatus comprises power and control circuitry working in conjunction with a terminal block containing a plurality of pins which are connected to the intercell lugs on the positive and negative straps which when welded together form the intercell connections within the battery. Within this block, the pins are partially wired together so that if there is complete continuity of the intercell welds a continuous electrical circuit is formed. Midway in the electrical wiring is a blocking diode which acts to permit the passage of a DC test current in only one direction. If a positive polarity voltage is impressed on the cathode side of the diode, current will only flow if there is a short circuit between plates of opposite polarity within the cell.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: August 4, 1981
    Assignee: General Battery Corporation
    Inventor: Jimmy L. Stewart