Patents by Inventor Aubrey C. Folsom, Jr.

Aubrey C. Folsom, Jr. 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: 8057230
    Abstract: A dental implant having a hollow ceramic cylinder compressed between two metal components of the implant. A principal embodiment comprises a hollow ceramic cylinder, a hollow abutment with an anti-rotational feature, a metallic tip with a hollow metal core, and a screw. The metal core is press-fit into the ceramic cylinder providing a metallic tip at the apical or bottom end of the ceramic cylinder. The screw is inserted into the hollow abutment and extends into and screws into the metal core. By tightening the screw, the ceramic cylinder can be compressed to improve its strength, and the abutment is thereby reversibly attached to the hollow ceramic cylinder. The hollow ceramic cylinder is implantable in both bone and soft tissue, extends through the interface between the bone and soft tissue, maintains the normal appearance of gum tissue after implantation, and has a maximum diameter between 1.8 to 6 mm.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: November 15, 2011
    Inventor: Aubrey C. Folsom, Jr.
  • Patent number: 5605457
    Abstract: A threaded connection for use in medical implant surgery which utilizes a read profile which includes a load flank, a stab flank, a root intermediate the stab flank and load flank, and a crest intermediate the load flank and stab flank. The distance, measured paraxially, which the screw moves one complete revolution of the connection, is the lead of the thread. In the invention, the lead varies for either the male or female member of the connector such that the load flank, effectively, is moved away from axial interference with the cooperative member as the thread is "made up" or engaged. Accordingly, the load flank interface along the length of the connection is stressed, rather than having the load flank interface stressed predominately at the end turns of the thread, as often occurs under loading of the thread. In this manner, the stress loading of the thread is spread over the multiple turns of the thread, and pre-load is not lost by the yielding of the end turn.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: February 25, 1997
    Assignee: Crystal Medical Technology, a division of Folsom Metal Products, Inc.
    Inventors: A. Gregory Bailey, Aubrey C. Folsom, Jr.
  • Patent number: 5605458
    Abstract: An improved thread profile for use in medical implants utilizes a negative o slightly positive load flank inclination to minimize radial separation of the threaded connection by increasing the radial force required to overcome the surface and interference resistance to relative motion between the made-up abutting load faces of the connector threads.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: February 25, 1997
    Assignee: Crystal Medical Technology, a division of Folsom Metal Products, Inc.
    Inventors: A. Gregory Bailey, Aubrey C. Folsom, Jr.