Patents by Inventor Allan B. Dove

Allan B. Dove 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).

  • Floor nail
    Patent number: 3977142
    Abstract: This invention provides a fastener which includes a shank having a head on one end and a conical portion on the other, the apex of the conical portion constituting a piercing point for the fastener. The shank includes a smooth cylindrical portion adjacent the conical portion and a threaded portion adjacent the head. The axial section of the fastener exhibits an abrupt, angled transition between the conical portion and the smooth cylindrical portion. The thread diameter of the threads on the threaded portion is greater than the diameter of the smooth cylindrical portion, which is the same as the base diameter of the conical portion. The thread angle of the threads is between about 35.degree. and about 55.degree., and the included cone angle of the conical portion is between about 23.degree. and about 35.degree..
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: August 31, 1976
    Assignee: The Steel Company of Canada, Limited
    Inventors: Allan B. Dove, Allen C. Hunsberger