Patents by Inventor Tommie L Craven

Tommie L Craven 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: 8708061
    Abstract: A demolition hammer is provided that may include a housing having a distal end, a power cell disposed in the housing, an end plate attached to the distal end of the housing, and a damper disposed in the housing between the power cell and the end plate, wherein the damper is spaced apart from the power cell by a gap. The damper may also support and align a plurality of wear plates interposed between the housing and power cell. The damper may have generally rectangular first portion having a planar upper surface and a planar lower surface generally parallel to the upper surface and a generally circular second portion extending from the lower surface, wherein the first portion and the section portion define a central through bore.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: April 29, 2014
    Assignee: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L Craven
  • Patent number: 8500207
    Abstract: A rock claw is provided for a demolition hammer. The rock claw may be a separate component attachable to the external surface of the hammer housing. The rock claw may include a first portion with a first distal end and a first proximal end and a second portion with a second distal end and a second proximal end. The first proximal end is joined to the second proximal end to form an elbow and the second distal end having a first leg spaced apart from a second leg.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: August 6, 2013
    Assignee: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L Craven, Lauritz P. Pillers
  • Publication number: 20120152581
    Abstract: A demolition hammer may include a housing having a distal end and a proximal end, a power cell disposed in the housing along a longitudinal axis and a side buffer positioned to support the power cell in the housing, wherein the housing forms a first retaining structure that prevents axial movement of the side buffer toward the proximal end. The housing may also form a second retaining structure that prevents inward radial movement of the side buffer and a third retaining structure that prevents outward radial movement of the side buffer.
    Type: Application
    Filed: December 18, 2010
    Publication date: June 21, 2012
    Applicant: Caterpillar Inc.
    Inventors: Lauritz P. Pillers, II, Tommie L. Craven, James G. Nickels
  • Publication number: 20120145422
    Abstract: A rock claw is provided for a demolition hammer. The rock claw may be a separate component attachable to the external surface of the hammer housing. The rock claw may include a first portion with a first distal end and a first proximal end and a second portion with a second distal end and a second proximal end. The first proximal end is joined to the second proximal end to form an elbow and the second distal end having a first leg spaced apart from a second leg.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L. Craven, Lauritz P. Pillers
  • Publication number: 20120145424
    Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L. Craven, Lauritz P. Pillers
  • Publication number: 20120145426
    Abstract: A demolition hammer is provided that may include a housing having a distal end, a power cell disposed in the housing, an end plate attached to the distal end of the housing, and a damper disposed in the housing between the power cell and the end plate, wherein the damper is spaced apart from the power cell by a gap. The damper may also support and align a plurality of wear plates interposed between the housing and power cell. The damper may have generally rectangular first portion having a planar upper surface and a planar lower surface generally parallel to the upper surface and a generally circular second portion extending from the lower surface, wherein the first portion and the section portion define a central through bore.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L. Craven
  • Patent number: D643049
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: August 9, 2011
    Assignee: Caterpillar Inc.
    Inventors: James G. Nickels, Tommie L Craven, Lauritz P. Pillers
  • Patent number: D645480
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: September 20, 2011
    Assignee: Caterpillar Inc.
    Inventors: Lauritz P. Pillers, II, Francis D. Theobalds, James G. Nickels, Tommie L. Craven
  • Patent number: D645481
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: September 20, 2011
    Assignee: Caterpillar Inc.
    Inventors: Lauritz P. Pillers, II, Francis D. Theobalds, James G. Nickels, Tommie L. Craven