Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1986-10-06
1988-05-03
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
405239, E04C 516
Patent
active
047411430
ABSTRACT:
A combination sled/spacer comprising a molded body which has tie wires permanently connected thereto. The sled/spacer is adapted to be affixed to the outer surface of a steel reinforcing cage prior to the time that the cage is inserted into a pier hole in the ground. A preferred material for the molded body is a cementitious material, so that the concrete which is poured around the reinforcing cage will be similar to the material from which the sled/spacer is made. A plurality of longitudinal and transverse tie wires is preferred, so that the sled/spacer may be connected easily to both longitudinal and spiral members of a reinforcing cage. A typical sled/spacer has a length within the range of six to twelve inches, and is tapered from a wide surface which lies immediately adjacent the reinforcing cage, to a more narrow surface which bears against the sides of a pier hole. The surface which is expected to rub against the side of a pier hole is preferably convex.
REFERENCES:
patent: 790230 (1905-05-01), Stemple
patent: 1356315 (1920-10-01), Scofield et al.
patent: 1708277 (1929-04-01), Martin
patent: 1946418 (1934-02-01), Welch
patent: 2612024 (1952-09-01), Hunsucker
patent: 3257767 (1966-06-01), Lassy
patent: 3471986 (1969-10-01), Swenson
patent: 3722164 (1973-03-01), Schmidgall
patent: 4627211 (1986-12-01), Foster
McHugh Charles W.
Ridgill, Jr. James L.
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