Extensible Fulcrum Patents (Class 254/26E)
  • Patent number: 6032927
    Abstract: A hammer with a conventional open V-claw has a second hook claw located below the V-claw which is large enough to accept any size nail heads. The second claw is placed so as to grip a nail in a direction that is opposite to the conventional V-claw. The second claw may be a loop, V-shaped, or an open hook mounted below the standard V-claw on the body of the hammer head, or on the V-claw itself.
    Type: Grant
    Filed: January 5, 1998
    Date of Patent: March 7, 2000
    Inventor: John Atkinson
  • Patent number: 5938177
    Abstract: A power bar device including first bar. The first bar has a first end, a bend, a body portion and wedged shaped working end projecting from the bend. The body portion has a pair of generally rectangular plates fixedly attached. Each of the pair of plates having a plurality of openings. A second bar has a plurality of openings therethrough and an arced foot member that is fixedly attached to one end and spaced from the plurality of opening. The second bar is positioned between a gap of the pair of plates. A pin is positioned simultaneously through atleast one of the openings of the second bar and atleast one of the opens of each of the pair of plates, when each are in alignment therewith, for securing the second bar between the plates of the first bar.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: August 17, 1999
    Inventor: Scott J. Fonda
  • Patent number: 5622352
    Abstract: A conventional claw hammer is fitted with a connected arch intermediate the hand-held end of the handle and the head which defines the conventional claw. The connected arch contains a teardrop shaped notch defined as parallel to the handle and so positioned to ease in the removal of a nail from a work surface. The connected arch is made from a hardened steel material, or that of the same strength and likeness, designed to withstand high bearing prestores in conjunction with the removal of nails or spikes from a work surface.
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: April 22, 1997
    Inventor: Phillip L. Swindoll
  • Patent number: 5441236
    Abstract: A hammer with claws and an adjustable pivot point comprising, of an elongated handle with a first gripping end for being held by a user, a second operational end for driving and removing nails, an exterior surface for being held by a user, a cylindrical interior surface extending axially through the length of the handle, and inserts with internal screw threads positioned on the interior surface adjacent the first and second ends. A head having a nail driving side with a flat surface and a nail removing side with a claw having a V-shaped slot positionable under the head of a nail to be removed and a cylindrical bore therebetween, the bore being positioned onto the exterior surface of the handle at the first end.
    Type: Grant
    Filed: March 10, 1994
    Date of Patent: August 15, 1995
    Inventor: Robert J. Kiernan
  • Patent number: 5249776
    Abstract: An adjustable leverage claw hammer for providing increased leverage when removing nails of various lengths. The claw hammer includes a standard hammer head mounted on one end of a handle. The hammer head has a first end with a striking surface for engaging nails and a second end forming a pair of claws used for removing nails. The hammer head has a "U" shaped cap assembly rotatably pinned thereon. The cap assembly has a convex shaped top portion disposed above the top of the hammer head which acts as a fulcrum for engaging a working surface having a nail driven therein. Extending downwardly from the top portion of the cap assembly is a pair of side plates having a plurality of detent teeth disposed along an interior surface of the side plates. The detent teeth are positioned adjacent opposite sides of the hammer head. A slot is cut through a portion of the second end of the hammer head and adjacent the claws. The slot is used to receive a spring biased lock assembly.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: October 5, 1993
    Inventor: Ray W. Johnson
  • Patent number: 5060911
    Abstract: A claw hammer includes a fulcrum repositioning and/or lever arm lengthening extension which may be releasably mounted at the distal, hammer head, end of the hammer for use in pulling nails and also releasably mounted at the proximal end of the hammer handle for storage.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: October 29, 1991
    Inventor: Jerome J. Mikesell
  • Patent number: 4998996
    Abstract: A hammer comprising an anvil, bell and claw at the head end and a hollow handle into which is housed an adjustable fulcrum mechanism axially disposed and consisting of a fulcrum rod fitted with a cushioned protective tip at the exposed end, said rod matingly matching an aperture in the hammer's bell, and said rod being axially coupled to manual rotating means terminating with a control knob exposed at the grip end of said handle.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: March 12, 1991
    Inventor: Jacques F. Belanger
  • Patent number: 4422620
    Abstract: An adjustable fulcrum hammer with a handle having a grip at one end, a head fixed about the other end, a fulcrum rod extending into the hollow interior of the handle through a bore in the head, an elastomeric member on the end of the rod remote from the head for contacting a fulcrum surface, a set screw extending the handle between its ends for locking the fulcrum rod in any desired position and a spring mounted within the handle for urging the rod outward. In another embodiment of the present invention, a locking mechanism is integrally provided by cooperating threads which disengage and allow for reciprocable movement when the fulcrum member is rotated a quarter-turn.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: December 27, 1983
    Inventor: Jerold I. Nitzberg