Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Reexamination Certificate
2005-03-29
2005-03-29
Thomas, Alexander S. (Department: 1772)
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
C052S687000, C428S099000
Reexamination Certificate
active
06871471
ABSTRACT:
An apparatus for positioning rebar for reinforcing concrete, wherein the apparatus includes a semi-cylindrical portion configured for receiving a first rebar extending in a first direction, wherein the semi-cylindrical portion defines first and second opposing straight edges, and two opposing semi-circular ends. A first flange portion extends outwardly from the first straight edge, and a second flange portion extends outwardly from the second straight edge. First and second receiver portions extend longitudinally from the respective first and second flanges beyond one of the ends for receiving a second rebar extending in a second direction substantially orthogonal to the first direction, and for urging the second rebar against the first rebar. Optionally, legs extend from or are attached to the apparatus for supporting the apparatus in an elevated position.
REFERENCES:
patent: 910399 (1909-01-01), Lidseen
patent: 5893252 (1999-04-01), Hardy, Jr. et al.
patent: 6112494 (2000-09-01), Hardy, Jr. et al.
Stone, Jr. Jack D.
Thomas Alexander S.
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