Screed form stake

Details Screed form stake Screed form stake

2002-02-11

2003-07-08

Braun, Leslie A. (Department: 3632)

Static structures (e.g., buildings)

Installed screed or unit with specified feature retaining...

C052S365000

Reexamination Certificate

active

06588164

ABSTRACT:

FIELD OF THE INVENTION
The present invention pertains to the field of devices for use in concrete pouring operations. Particularly, the invention relates to screed form stakes used in concrete pouring operation to ensure that once the is poured it is smooth and level.
BACKGROUND OF THE INVENTION
Screed and form stakes are conventionally used when pouring concrete in order to obtain the proper grade and to ensure a smooth level surface of the concrete once it has been poured. Form stakes are used to support concrete forms or barriers which are used along the outside of an area in which concrete is to be poured, so as to contain the poured concrete in that area. Screed stakes are used to support rods or bars, which are placed over large areas to ensure that the. concrete being poured is level and smooth.
On many smaller jobs individuals have taken to forming screed stakes from wooden scraps. These scraps are formed into stakes which are then used to support either concrete forms or screed rods/bars. This process is time consuming and often does not yield accurate results.
Alternatively, the use of complex screed systems is expensive, especially given the fact that, in many operations, screed stakes may permanently stay in the concrete once it has been poured. One solution to this problem used in the prior art was a multiple piece screed stake, part of which could be removed. An example of this type of system is illustrated in U.S. Pat. Nos. 2,867,041 and 5,173,004. These systems, while effective, are more complex and costly than the screed system of the present invention. Further, the prior art systems are more complicated to use and generally require more than one individual to ensure proper placement of the stakes over a given area.
SUMMARY OF THE INVENTION
The present invention is A SCREED/FORM STAKE SYSTEM comprised of a screed/form stake (
10
) and a stake driver (
12
). The screed/form stake (
10
) has a lower end, which is adapted for ground cutting by terminating in the shape of a point. The upper end of the screed/form stake (
10
) comprises a U-shaped cradle portion (
14
) adapted for receiving a screed rod or bar [(
28
) in FIG.
6
]. The stake has two side flanges (
16
,
18
), which together form the face portion of the stake. Holes (
26
) are drilled in each of the side flanges (
16
,
18
) at predetermined positions. The holes (
26
) are for use in association with a concrete form and to assist in the proper placement of the stake in a screeding operation. A central raised flange (
20
) is located on the face portion of the stake: The central flange (
20
) extends upwardly from the lower end of the stake where it is angled to cooperate with the pointed end of the face portion of the stake. The central flange (
20
) extends upwardly terminating in the raised U-shaped cradle portion (
14
) of the upper end of the stake (
10
). The stake may be of varying lengths, depending upon the depth of concrete to be poured. The stake driver (
12
) comprises a handle portion and a driver portion and is designed to mate with the screed/form stake (
10
) in use.


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