Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1988-02-11
1989-06-06
Scherbel, David A.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
52687, 52689, 248 744, F04C 516
Patent
active
048359335
ABSTRACT:
A spacer assembly including a spacer with a body having a base portion with a generally centrally disposed support post portion, one end which is formed as a planar surface with a centrally located generally concave saddle portion configured for receiving a reinforcing bar, the planar surface being provided with apertures therethrough on both sides of the saddle. A clamp member is provided for simultaneously securing mutually perpendicular rebars to the chair, the clamp member including a generally U-shaped lower portion, with the depending arms thereof in spaced generally parallel relation for engaging a first bar within the saddle. A pair of generally identical hook arms extending upwardly from the bight portion, the hook arms being oriented for engaging a second rebar in an orientation perpendicular to a first rebar engaged within the saddle portion. The saddle portion is configured with a centrally disposed opening therein, and an incremental spacer or extender member is provided, for mating coaction with the uppermost part of the support post. The extender member is one of a set of extender members wherein the spacer can be fabricated in whole sizes, such as two inch, three inch, etc., and the extender members can be fabricated in fractional sizes, such as one-quarter, one-half and three-quarter inch sizes.
REFERENCES:
patent: 1921538 (1933-08-01), Priest
patent: 2064705 (1936-12-01), Whitehead
patent: 3447277 (1969-06-01), Korf
patent: 3673753 (1972-07-01), Anderson
patent: 4655023 (1987-04-01), Yung
Chilcot Jr. Richard E.
Scherbel David A.
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