Patents by Inventor Frederic C. Abraham

Frederic C. Abraham 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: 5888334
    Abstract: A fixture (structural element) is readily mounted to a surface of a substrate (such as concrete) by embedding and adhering an internally-threaded anchoring element (sleeve) in a hole in the substrate. Preferably, the anchoring element is recessed below the surface of the substrate ("embedded"). To aid in inserting the anchoring element into the hole, an insertion tool may be employed. The system is re-usable, in the sense that the fixture can be removed and replaced, or the fixture can be removed and the hole in the substrate covered. In the latter case, a gauge element may be inserted into the anchoring element prior to sealing over the hole. A template is provided to ascertain the depth that the anchoring element is embedded within the substrate, as determined by the cross-sectional dimension of the gauge element at the surface of the substrate. Alternatively, the insertion tool can remain in place, within a bore in a substrate, mated to the anchor element.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: March 30, 1999
    Inventor: Frederic C. Abraham
  • Patent number: 5569007
    Abstract: A fixture (structural element) is readily mounted to a surface of a substrate (such as concrete) by embedding and adhering an internally-threaded anchoring element (sleeve) in a hole in the substrate. Preferably, the anchoring element is recessed below the surface of the substrate ("embedded"). To aid in inserting the anchoring element into the hole, an insertion tool may be employed. The system is re-usable, in the sense that the fixture can be removed and replaced, or the fixture can be removed and the hole in the substrate covered. In the latter case, a gauge element may be inserted into the anchoring element prior to sealing over the hole. A template is provided to ascertain the depth that the anchoring element is embedded within the substrate, as determined by the cross-sectional dimension of the gauge element at the surface of the substrate. A wedge-element is also described for fitting to the end of a threaded rod, for forming an anchor stud.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: October 29, 1996
    Inventor: Frederic C. Abraham
  • Patent number: 4946325
    Abstract: An expansion anchor stud comprises an expansion anchor for gripping a hole in a surface, an axially-aligned, externally threaded stud of substantially the same outside diameter as the anchor and engaging the distal end of the anchor, and an axially-aligned bolt extending through a hole in the anchor and engaging the stud. A head on the proximal end of the bolt abuts the proximal end of the anchor, and external threads on the bolt engage internal threads in a hole extending through the stud. The anchor is expanded by a tool inserted into the distal end of the hole in the stud to engage the distal end of the bolt and rotate the bolt relative to the stud, thereby axially compressing, and hence expanding, the anchor. The distal end of the stud extends, in use, through a hole in a panel being mounted to the surface so that a nut may be threaded onto the external threads of the stud to secure the panel to the surface.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: August 7, 1990
    Inventor: Frederic C. Abraham
  • Patent number: 4789282
    Abstract: An expansion anchor stud comprises an expansion anchor (16) for gripping a hole (25) in a surface (24), an axially-aligned threaded stud (14) of substantially the same outside diameter as the anchor (16) and engaging the distal end of the anchor (16) for being disposed in a hole (26) in a panel (27) mounted to the surface (24) and having a hole (28) therethrough, and an axially-aligned bolt (12) extending through the hole (28) in the stud (14) and engaging the anchor (16) and limited in insertion by the distal end of the stud (14).
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: December 6, 1988
    Inventor: Frederic C. Abraham
  • Patent number: 4756491
    Abstract: At least one hook or clip is mounted to the inside surface of the engine compartment hatch door so as to removably receive the engine oil dipstick so that the dipstick protrudes beyond an edge of the hatch door and prevents its full closure.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: July 12, 1988
    Inventor: Frederic C. Abraham