Method and apparatus for setting concrete reinforcement
OwnerJames Thomas Edwardsinventor
Life of this patent
Estimating the term…
Abstract
A fixture for setting rebar at a predetermined distance from the rim of an excavated pit includes elongated first and second legs each having a proximal end and a distal end, the first and second legs rigidly joined at their mutual proximal ends to form an L-shape; an angle adjustment device carried by the first leg, comprising a foot movable towards or away from the first leg along an axis generally parallel to the second leg; a support bracket carried by the first leg at a predetermined offset distance from the proximal end thereof; and a hook extending from the distal end of the second leg, generally parallel to the first leg.
Claims11
A fixture for setting rebar at a predetermined distance from the rim of an excavated pit, comprising:
- elongated first and second legs each having a proximal end and a distal end, the first and second legs rigidly joined at their mutual proximal ends to form an L-shape;
- an angle adjustment device carried by the first leg, comprising a foot movable towards or away from the first leg along an axis generally parallel to the second leg, wherein a first threaded element is fixedly joined to the first leg, and a second threaded element is engaged with the first threaded element, and wherein the second threaded element carries the foot and is arranged such that rotation of the second threaded element relative to the first threaded element will cause linear movement of the foot;
- a support bracket carried by the first leg at a predetermined offset distance from the proximal end thereof, the support bracket has an L-shape defining an upward-facing hook shape;
- and
- a fixed hook extending from the distal end of the second leg, generally parallel to the first leg;
- wherein the fixture is removed after the rebar is set in place.
A method for setting rebar at a predetermined distance from the rim of an excavated pit, comprising:
- placing a plurality of fixtures at spaced-apart locations around the rim of a pit excavated into the earth, the pit defined by a recessed floor bounded by a generally vertical perimeter wall and being surrounded by a rim, and wherein an upstanding form is disposed around the perimeter of the rim laterally offset from the perimeter wall, each fixture including:
- elongated first and second legs each having a proximal end and a distal end, the first and second legs rigidly joined at their mutual proximal ends to form an L-shape;
- an angle adjustment device carried by the first leg, comprising a foot movable towards or away from the first leg along an axis generally parallel to the second leg, wherein the angle adjustment device comprises a first threaded element fixedly joined to the first leg, and a second threaded element engaged with the first threaded element, the second threaded element carrying the foot;
- a support bracket joined to the first leg at a predetermined offset distance from the proximal end thereof, wherein each of the support brackets has an L-shape defining an upward-facing hook;
- and
- a fixed hook extending from the distal end of the second leg, generally parallel to the first leg;
- positioning the hook of each of the fixtures in engagement with the form;
- adjusting each of the fixtures using the angle adjustment device so that the first leg is plumb by rotating the second threaded element so as to move the foot into a position in which it bears against the perimeter wall and hold the respective fixture in the plumb orientation;
- and
- placing a length of rebar into the pit, engaged with the support brackets of the plurality of fixtures, such that the rebar is positioned at a substantially uniform vertical offset distance from the rim.
Dependencies are inferred from the claim text.