Appeal 2007-0694
Reexamination Control 90/006,433
Patent 5,428,933
28) Horobin ‘969 states that there is a need in the concrete block art for “a
new novel arrangement of concrete-block form that can become universally
accepted in the industry.” (Id. at col. 1, ll. 33-35).
29) Horobin ‘969 describes its concrete block form as follows:
Accordingly, there is defined a concrete-block form having
oppositely disposed side walls and transverse end walls. The
end walls include upper and lower insert members which are
removable when required. A plurality of transverse strut walls
are also integrally formed as part of the block structure and are
adapted to receive the upper and lower insert members when
the block form is divided into different lengths, as required.
Interlocking tongue-and-groove rails are formed along the
upper longitudinal edges of the side walls as well as the upper
edge of the upper insert member. The lower longitudinal edge
of each side panel includes a longitudinal groove that
corresponds to the upper interlocking tongue whereby the block
forms can be stacked and interlocked to define a wall structure.
The block forms are generally rectangular in shape wherein the
side walls and end walls define a body cavity which is divided
into a plurality of cells adapted to receive concrete therein.
(Id. at col. 2, ll. 9-27).
30) Horobin ‘969 states that an object of its invention is to provide a block
form that allows for interlocking stack forms without the need for mortar.
(Id. at col. 2, ll. 40-44).
31) Horobin ‘969 Figures 1 and 2, depicted below, provide a perspective
view and an end view of Horobin’s block form:
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