Patents by Inventor Albert C. Callens

Albert C. Callens 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: 8834090
    Abstract: A system for attaching a grappling fork to a conventional bucket, where the grappling fork does not interfere with the normal use of the bucket. The grappling fork attachment system generally includes a support frame pivotally attached to a tractor between a bucket unit and a pair of loader arms, wherein the support frame may securely attach to either the bucket unit or the pair of loader arms through use of a locking element. An extension frame is pivotally attached to the support frame. A drive assembly comprised of a chain and sprocket configuration is provided one the extension frame for rotating and repositioning the extension frame. A grappling structure is pivotally attached to the extension frame for grabbing and securing a load within the bucket of the tractor. A pair of linkage assemblies are provided on the extension frame for pivoting the grappling structure about the extension frame.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: September 16, 2014
    Inventor: Albert C. Callens
  • Patent number: 8061957
    Abstract: A grappling fork attachment system for attaching a grappling fork to a conventional bucket, where the grappling fork does not interfere with the normal use of the bucket. The grappling fork attachment system includes a support frame pivotally attached to a tractor between a bucket unit and a pair of loader arms, wherein the support frame may securely attach to either the bucket unit or the pair of loader arms. An extension frame is pivotally attached to the support frame and a first drive assembly mounted proximate the extension frame for pivoting the extension frame about the support frame. A grappling structure is pivotally attached to the extension frame for grabbing and securing a load within the bucket of the tractor and a second drive assembly mounted proximate the extension frame for pivoting the grappling structure about the extension frame.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: November 22, 2011
    Inventor: Albert C. Callens
  • Patent number: 7513732
    Abstract: A loader attachment system for efficiently attaching an implement (i.e. bucket, etc.) to a skid steer loader or other similar use vehicle. The loader attachment system generally includes an upper assembly including an upper end and a lower end, wherein the upper assembly is pivotally attached to a mounting plate, a sleeve attached to the mounting plate, a plunger pivotally attached to the lower end of the upper assembly, wherein the plunger extends within the sleeve and wherein the plunger slidably adjusts within the sleeve and a first spring mechanically connected between the upper assembly and the mounting plate. The first spring mechanically rotates the plunger within the sleeve via rotation of the upper assembly.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: April 7, 2009
    Inventor: Albert C. Callens