Adjustable form for concrete construction
OwnerReinhardt Switzerinventor
Life of this patent
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Abstract
An adjustable form for installing across an opening at an edge of a concrete slab includes a form member having a first form portion and a second form portion slidably connected to reach an adjustable effective length of the form member. The adjustable form further includes an extension mechanism connected between the first and second form portions and is operable to vary the effective length of the form member to fit across the opening. Tension exerted between the first and second form portions at the effective length is sufficient to keep the adjustable form in place.
Claims15
An adjustable form for installation across an opening at an edge of a concrete slab comprising:
- a form member having a first form portion and a second form portion slidably connected to reach an adjustable effective length of the form member in a length direction;
- and
- an extension mechanism being connected between the first and second form portions and operable to vary the effective length of the form member to fit across the opening, the extension mechanism including an extension rod extending along the form member in the length direction from a first end connected to the second form portion through a guide extending in the length direction and connected to the first form portion;
- wherein tension exerted between the first and second form portions by the extension member at the effective length is sufficient to keep the adjustable form in place.
An adjustable form for installation across an opening at an edge of a concrete slab comprising:
- a form member having a first form portion and a second form portion slidably connected to reach an adjustable effective length of the form member in a length direction;
- an extension mechanism being connected between the first and second form portions and operable to vary the effective length of the form member to fit across the opening;
- and
- two flanges connected at respective ends, in the length direction, of the form member;
- wherein tension exerted between the first and second form portions at the effective length is sufficient to keep the adjustable form in place;
- and
- wherein the two flanges are pivotably connected at respective ends of the form member so as to be positionable at variable angles relative thereto.
Dependencies are inferred from the claim text.