Patents by Inventor John Duncan Logan

John Duncan Logan 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: 6098321
    Abstract: A bucket converter for providing improved excavation versatility that couples with and attaches to an excavation. The bucket converter comprises a volume increasing frame coupled and semi-fixedly attached to an excavation bucket for increasing the volumetric capacity of the excavation bucket. An orienting projection from a lower portion of the frame holds the coupling element of the frame at a height above a surface when the bucket converter is detached from the excavation bucket and is supported on the surface by the orienting projection and a lowermost portion of the frame. The height at which the coupling portion is held by the orienting projection enables engagement of the coupling portion with a cooperative coupling element on the excavation bucket without the need for any initial manual assistance.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: August 8, 2000
    Inventor: John Duncan Logan
  • Patent number: 6088939
    Abstract: An implement adapter for providing excavation versatility that couples with and attaches to an excavation tool assembly for mounting a working implement thereon. The implement adapter comprises a frame for holding a working implement, wherein the frame is coupled and semi-fixedly attached to an excavation tool assembly. A parking projection holds the coupling element of the frame at a sufficient height above a surface when the implement adapter is detached from the excavation tool assembly and supported on the surface by the parking projection and a lowermost portion of either the frame or the working implement. The height at which the coupling portion is held by the parking projection enables engagement of the coupling portion with a cooperative coupling element on the excavation tool assembly without the need for any manual assistance.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: July 18, 2000
    Inventor: John Duncan Logan
  • Patent number: 6088938
    Abstract: An implement adapter for providing improved excavation versatility that couples with and attaches to an excavation tool assembly for mounting a working implement thereon. The implement adapter comprises a frame for holding a working implement, wherein the frame is coupled and semi-fixedly attached to an excavation tool assembly. A parking projection holds the coupling element of the frame at a sufficient height above a surface when the implement adapter is detached from the excavation tool assembly and supported on the surface by the parking projection and a lowermost portion of either the frame or the working implement. The height at which the coupling portion is held by the parking projection enables engagement of the coupling portion with a cooperative coupling element on the excavation tool assembly without the need for any manual assistance.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: July 18, 2000
    Inventor: John Duncan Logan