Patents by Inventor Dennis A. Kirtland

Dennis A. Kirtland 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: 5209338
    Abstract: A high speed production line system has a product conveying section wherein a conveyor is formed from a plurality of individual and transversely extending pallets which are movable relative to one another in the transverse direction. Certain of the pallets have a cam controlled movement whereby upstanding posts can engage with packs of products to turn the packs through 90.degree. while the packs pass through the conveying section. Thereafter, the packs can be moved into different lanes as required by virtue of cam control of the pallets.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: May 11, 1993
    Assignee: W. H. Dunn & Son Ltd.
    Inventor: Dennis A. Kirtland
  • Patent number: 4988838
    Abstract: For protecting cables, service lines and the like particularly in longwall face mining, an articulated arrangement is formed from a plurality of interconnected links. Each link has a central web (10) forming the common base for a pair of laterally open channels (16,18) on respective sides. At least some of the links have each channel side (12,14) formed with an inwardly extending bulge (28) which thereby define an entrance (30,32) for the respective channel of less width than the width of the respective channel. The apparatus is substantially formed of a plastics material with the channel sides being resiliently flexible whereby a cable or service line can be inserted into a respective one of the channels (16,18) by deflecting the channel legs apart. After the cable or service line passes through the channel entrance, the channel sides (12,14) regain their original position and prevent the line from moving inadvertently out of the channel.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: January 29, 1991
    Assignee: W. H Dunn & Son Limited
    Inventor: Dennis A. Kirtland