Patents by Inventor Norman D. Collins

Norman D. Collins 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).

  • Attachment for sucker rod depth adjustment
    Patent number: 5101676
    Abstract: A sucker rod depth adjusting attachment for conventional oil well surface units for operating down-hole pumps includes a cross bar which rests atop the existing carrier bar and supports a matching adjusting bar by means of interconnecting, adjustable length rams. The ram locations are off-center of the well center and sucker rod depth is varied by adjusting the ram length. In an alternate embodiment, the carrier bar and cross bar are combined as a single part.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: April 7, 1992
    Inventor: Norman D. Collins