Appeal 2007-0694 Reexamination Control 90/006,433 Patent 5,428,933 Guarriello Figure 9, depicted above, demonstrates that two forms may be placed adjacent to each other via an interior separator 290 such that concrete poured in one form is permitted to communicate to an adjacent form. (Id. at col. 6, ll. 3-11). 22) The upper and lower faces of Guarriello’s side walls have locking members in the form of projections and recesses. (Figs. 8 and 9). 23) Guarriello’s projections and recesses form two alternating rows. For example, Guarriello 9 depicts alternating rows of projections (ribs) 270 and alternating rows of recesses (channels) 276. 24) Guarriello’s projections and recesses are offset such that a recess on one row on the top edge is opposed to a projection on the bottom edge. (Guarriello, col. 4, l. 67 to col. 5, l. 9). 25) Guarriello’s blocks are formed such that they may be interconnected in a bidirectional manner. (Guarriello, col. 5, ll. 9-14 and 45-48). 2. Horobin, U.S. Patent 4,894,969 26) Horobin ‘969 is directed to an insulating block form for use in the construction of concrete wall structures. (Horobin, Abstract). 27) Horobin ‘969 states that its blocks are made from expandable styrene. (Id.). 11Page: Previous 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Next
Last modified: September 9, 2013