Patents Assigned to Matrix Tool, Inc.
  • Patent number: 6915936
    Abstract: A tool for driving and setting nail-pin anchors and anchor bolts into concrete, the tool using the percussive action of a rotary hammer drill. The tool comprises a body member with a spring, a driver, and a ram inserted into the body member's bore. After a hole is drilled for insertion of the anchor, the masonry drill bit of the rotary hammer drill is slid inside the bore of the ram and temporarily locked to the tool. The rotary hammer drill is activated, and the drill bit turns inside the ram without affecting the body member or the anchor. Instead, the percussive force of the rotary hammer drill transfers its impact to the ram and the driver, which impacts the nail of the nail-pin anchor, or the stem of the anchor bolt, setting it into the concrete. A keyed bearing can be installed inside a sleeve of the ram in order to protect the tip of the masonry drill bit from shearing.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: July 12, 2005
    Assignee: Matrix Tool, Inc.
    Inventor: John Howard Estes
  • Patent number: 6769845
    Abstract: A tool for removing the dome portion of a nail pin anchor, rivet, or other fastener. The tool, which is powered by a power drill, has a drilling end with a slot to accommodate the nail of the anchor. The balanced drill bit has six cutting points. A collar surrounds the body of the tool, allowing the installer to position it properly. Free-wheeling bearings allow the collar to remain stationary while the drilling end is rotating.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: August 3, 2004
    Assignee: Matrix Tool, Inc.
    Inventor: John Howard Estes
  • Patent number: 6553640
    Abstract: A tool for driving and setting a nail-in anchor into concrete. The tool has a drive pin which can be locked and unlocked. When the drive pin is locked, the tool, used with a hammer, will drive only the anchor sleeve into a pre-drilled hole in concrete. When the drive pin is then unlocked, the tool, again used with a hammer, will nail the nail into the sleeve and set the anchor. The tool can be manipulated using only one hand. The tool typically has a thumb cap which, when rotated, locks and unlocks the drive pin. The tip of the tool is machined to have a concave shape for fitting over the convex-shaped dome of a typical nail-in anchor. The outer surfaces of the tool can have knurls to improve handling.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: April 29, 2003
    Assignee: Matrix Tool, Inc.
    Inventors: John Howard Estes, Johnnie Wayne Painter, Sr.
  • Patent number: 6490773
    Abstract: A tool for driving and setting a nail-in anchor into concrete. The tool has a drive pin which can be locked and unlocked. When the drive pin is locked, the tool, used with a hammer, will drive only the anchor sleeve into a pre-drilled hole in concrete. When the drive pin is then unlocked, the tool, again used with a hammer, will nail the nail into the sleeve and set the anchor. The tool can be manipulated using only one hand. The tool typically has a thumb cap which, when rotated, locks and unlocks the drive pin. The tip of the tool is machined to have a concave shape for fitting over the convex-shaped dome of a typical nail-in anchor. The outer surfaces of the tool can have knurls to improve handling.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: December 10, 2002
    Assignee: Matrix Tool, Inc.
    Inventors: John Howard Estes, Johnnie Wayne Painter, Sr.