Apparatus for forming risers for concrete steps

• US 5,026,018 A
• Filed: 02/26/1990
• Issued: 06/25/1991
• Est. Priority Date: 02/26/1990
• Status: Expired due to Fees

• Current Assignee: Harry J. Ayala
• Original Assignee: Harry J. Ayala
• Inventors: Ayala, Harry J.
• Primary Examiner(s): Housel, James C.
• Application Number:
  US07/484,919
• Time in Patent Office: 484 Days
• Field of Search: 249/2, 249/6, 249/14, 249/19, 249/157, 249/189, 249/192, 249/208, 249/219.1, 248/200.1, 248/257
• US Class Current: 249/14
• CPC Class Codes: E04G 13/06 for stairs, steps, cornices, balconies, or other parts corbelled out of the wall moulds for making prefabricated stair units B28B7/225; stairways with permanent forms E04F11/02
• CPC Class Codes: E04G 13/062 for stairs or steps

Abstract

An apparatus for forming risers for concrete steps between a pair of spaced vertical walls. The apparatus takes the form of a bracket which is to connect with a length of wood such as a conventional 2×6. A threaded member associated with the bracket in threading movement causes the bracket to extend from the 2×6 to produce a clamping of the 2×6 in the bracket between the spaced vertical walls. As a result, a removable barrier is formed which is to contain concrete when it is poured. After sufficient drying of the concrete, the 2×6 and the bracket are removed from the vertical side walls leaving the now produced concrete step.

Claims

1. An apparatus for forming risers for concrete steps poured between a pair of spaced vertical walls, said apparatus comprising:

an elongated rigid member having a fixed length less than the spacing between said vertical walls, said elongated rigid member having a first end and a second end, said elongated rigid member having a longitudinal center axis;

a bracket having an internal chamber, said first end being telescopingly received within said internal chamber, said bracket being slidably movable on said elongated rigid member in a direction parallel to said center axis, guide means on said bracket preventing movement of said bracket relative to said rigid member transverse to said longitudinal center axis, said bracket having an end plate, said end plate abutting against one of said walls with said second end of said elongated rigid member abutting against the other said wall;

a threaded member located in said internal chamber, said threaded member located between said end plate and said first end of said elongated rigid member, a nut threadedly mounted on said threaded member, rotation of said nut in one direction on said threaded member causes moving of said end plate away from said elongated rigid member tightly clamping said elongated rigid member and said bracket between said vertical walls; and

said elongated rigid member closely conforming to the interior wall surface of said internal chamber, adjustment means mounted on said bracket, said adjustment means for laterally adjusting the size of said internal chamber to insure that there is a close fit between said elongated rigid member and said bracket since various widths of said elongated rigid member may be utilized.

2. The apparatus as defined in claim 1 wherein:

fixing means mounted on said bracket, said fixing means securing together said elongated rigid member and said bracket when said bracket and said elongated rigid member are clamped between said vertical walls.